Gas power equipment and method for controlling the flow field in the tip region of gas power equipment

Abstract

A gas-powered device and a method for controlling the flow field in the tip region of the gas-powered device are disclosed. The gas-powered device is an axial-flow based transonic fan or compressor, and includes: a casing, a DBD plasma actuator, a rotor blade, a first insulating medium, an AC power supply, and a second insulating medium; a first insulating medium is provided on the inner wall of the casing to form an annular insulating medium, the positive electrode of the DBD plasma actuator is arranged in the first insulating medium to form an annular positive electrode, and the annular positive electrode is isolated from the inner wall of the casing by the first insulating medium, and the annular positive electrode is located upstream of the shock wave; the rotor blade is used as the negative electrode, and a second insulating medium is provided at the tip of the rotor blade to isolate the positive electrode and the negative electrode, and the AC power supply is respectively connected to the positive electrode and the negative electrode of the DBD plasma actuator to cause the DBD plasma actuator to generate plasma. The technical solution provided by the present disclosure is beneficial to improving the working performance of the gas-powered device under all working conditions.

Description

Technical Field

[0001] The present disclosure relates to the technical field of fluid mechanics, and in particular, to a gas power device and a method for controlling the flow field in the tip region of the gas power device. Background Art

[0002] Fans and compressors are gas power devices that rely on gas dynamics principles (such as aerodynamics principles), and act on air through the movement of mechanical components to achieve the flow and pressurization of air. Fans and compressors can be widely used in fields such as aeroengines and gas turbines, and fans and compressors have a great impact on the efficient and stable operation of equipment such as engines. For example, a new generation of variable cycle engines often need to balance high thrust-to-weight ratio and low fuel consumption rate, which requires the variable cycle engines to have a reliable bypass adjustment ability. As the front-end component of the engine, the compressor needs to have a wide flow adjustment ability and a stable operating margin to meet the bypass adjustment requirements of the engine, which brings new challenges to the aerodynamic structure design of the compressor. That is, how to make the gas power device have a wide flow adjustment ability and a stable operating margin is a technical problem worthy of attention. Summary of the Invention

[0003] To solve the above technical problems, the present disclosure is proposed. Embodiments of the present disclosure provide a gas power device and a method for controlling the flow field in the tip region of the gas power device.

[0004] According to the first aspect of the embodiments of the present disclosure, a gas-powered device is provided. The gas-powered device is an axial-based transonic fan or compressor, and the gas-powered device includes: a casing, a dielectric barrier discharge (DBD) plasma actuator, a plurality of moving blades, a first insulating medium, an AC power source, and a second insulating medium. The DBD plasma actuator, the plurality of moving blades, the first insulating medium, the AC power source, and the second insulating medium are all disposed within the casing. A first insulating medium is disposed on the inner wall of the casing. The first insulating medium is disposed along the circumferential direction of the rotation of the moving blades to form an annular insulating medium, and the annular insulating medium faces the tip of the moving blades. The positive electrode of the DBD plasma actuator is disposed along the circumferential direction of the rotation of the moving blades to form an annular positive electrode. The annular positive electrode is disposed within the first insulating medium, and the first insulating medium isolates the annular positive electrode from the inner wall of the casing. The annular positive electrode is located upstream of the shock wave formed by the moving blades, and the upstream is the upstream based on the oncoming flow direction of the gas-powered device. The moving blade is used as the negative electrode of the DBD plasma actuator, and a second insulating medium is disposed at the tip of the moving blade. The second insulating medium isolates the positive electrode and the negative electrode of the DBD plasma actuator from each other. The AC power source is respectively connected to the positive electrode and the negative electrode of the DBD plasma actuator to provide power for the DBD plasma actuator, so that the DBD plasma actuator generates plasma, and the plasma acts on the shock wave formed by the rotation of the moving blades.

[0005] According to the second aspect of the embodiments of the present disclosure, a method for controlling the flow field in the tip region of a gas-powered device blade is provided, including: determining the position of the shock wave generated by the moving blade of the rotor of the gas-powered device in the axial direction of the rotor; wherein, the gas-powered device is an axial-based transonic fan or compressor; upstream of the position, along the circumferential direction of the rotation of the moving blades, disposing the positive electrode of the DBD plasma actuator in the first insulating medium to form an annular positive electrode; wherein, the first insulating medium is disposed along the circumferential direction of the rotation of the moving blades on the inner wall of the casing of the gas-powered device to form an annular insulating medium. The annular insulating medium faces the tip of the moving blades, the first insulating medium isolates the annular positive electrode from the inner wall of the casing, and the upstream is the upstream based on the oncoming flow direction of the gas-powered device; disposing a second insulating medium at the tip of the moving blade, and the second insulating medium isolates the positive electrode and the negative electrode of the DBD plasma actuator from each other; wherein, the moving blade is used as the negative electrode of the DBD plasma actuator; verifying the working characteristic parameters of the rotor of the gas-powered device according to experimental or numerical simulation methods.

[0006] A gas power device and a method for controlling the flow field in the tip region of a gas power device provided by the above embodiments of the present disclosure. By providing an annular insulating medium on the inner wall of the casing of the gas power device and providing the positive electrode of the DBD plasma actuator on the annular insulating medium, an annular positive electrode of the DBD plasma actuator can be simply and conveniently formed in the casing. By using the moving blade as the negative electrode of the DBD plasma actuator and providing a second insulating medium at the tip position of the moving blade, not only can the negative electrode setting of the DBD plasma actuator be completed without the need to provide additional negative electrode components in the casing, but also it is beneficial to concentrate the plasma generated by the DBD plasma actuator in the tip region of the moving blade. By making the annular positive electrode located upstream of the shock wave formed by the moving blade in its axial direction, it is beneficial to concentrate the plasma generated by the DBD plasma actuator in the shock wave region of the flow field in the tip region of the moving blade, thereby facilitating the interaction between the plasma and the shock wave formed by the moving blade as much as possible, facilitating the suppression of the tip leakage vortex to a large extent, reducing the flow separation, and reducing the energy loss of the flow field in the tip region. Furthermore, it is beneficial to weaken the influence of the shock wave on the flow field in the tip region to a large extent, accelerate the flow of the gas in the tip region, and avoid the surge phenomenon. Through experiments and numerical simulations, it is verified that the gas power device of the present disclosure can effectively improve its working characteristic parameters while ensuring the working margin of the gas power device under different working conditions. It can be seen that the improvement measures of the technical solution provided by the present disclosure for the gas power device are simple and easy to implement, require low energy consumption, and are beneficial to improving the working performance of the gas power device under all working conditions.

[0007] The following will further describe the technical solutions of the present disclosure in detail through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] By describing the embodiments of the present disclosure in more detail in combination with the accompanying drawings, the above and other objects, features, and advantages of the present disclosure will become more obvious. The accompanying drawings are used to provide a further understanding of the embodiments of the present disclosure, and constitute a part of the specification, and are used to explain the present disclosure together with the embodiments of the present disclosure, and do not constitute a limitation to the present disclosure. In the accompanying drawings, the same reference numerals generally represent the same components or steps.

[0009] Figure 1 is a schematic structural diagram of the gas power device of the present disclosure;

[0010] Figure 2 is a schematic diagram of the plasma excitation situation of the flow field in the tip region of the moving blade of the present disclosure;

[0011] Figure 3 is a flowchart of an embodiment of the method for controlling the flow field in the tip region of the gas power device of the present disclosure;

[0012] Figure 4 Schematic diagram for comparing the working pressure ratio of the present disclosure;

[0013] Figure 5 Schematic diagram for comparing the working efficiency of the present disclosure;

[0014] Figure 6 Structural diagram of an electronic device provided by an exemplary embodiment of the present disclosure. Detailed implementation manners

[0015] Hereinafter, exemplary embodiments according to the present disclosure will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all embodiments of the present disclosure. It should be understood that the present disclosure is not limited by the exemplary embodiments described herein.

[0016] It should be noted that: Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values set forth in these embodiments do not limit the scope of the present disclosure.

[0017] Those skilled in the art can understand that terms such as "first", "second", etc. in the embodiments of the present disclosure are only used to distinguish different steps, devices or modules, etc., and do not represent any specific technical meaning, nor do they indicate an inevitable logical order between them.

[0018] It should also be understood that in the embodiments of the present disclosure, "a plurality of" may refer to two or more, and "at least one" may refer to one, two or more.

[0019] It should also be understood that for any component, data or structure mentioned in the embodiments of the present disclosure, unless otherwise clearly defined or given a contrary indication in the context, it is generally understood to be one or more.

[0020] In addition, the term "and / or" in the present disclosure is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in the present disclosure generally represents an "or" relationship between the associated objects before and after.

[0021] It should also be understood that the present disclosure emphasizes the differences between the various embodiments. The same or similar parts can be referred to each other. For the sake of brevity, they will not be described in detail one by one.

[0022] Meanwhile, it should be understood that for the sake of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationship.

[0023] The following description of at least one exemplary embodiment is merely illustrative and in no way restrictive of the present disclosure, its application, or use.

[0024] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices should be considered as part of the specification.

[0025] It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

[0026] Embodiments of the present disclosure can be applied to electronic devices such as terminal devices, computer systems, servers, etc., which can operate with many other general or special computing system environments or configurations. Examples of well-known terminal devices, computing systems, environments, and / or configurations suitable for use with electronic devices such as terminal devices, computer systems, or servers include, but are not limited to: personal computer systems, server computer systems, thin clients, thick clients, handheld or laptop devices, microprocessor-based systems, set-top boxes, programmable consumer electronics, network personal computers, minicomputer systems, mainframe computer systems, and distributed cloud computing technology environments including any of the above systems, and so on.

[0027] Electronic devices such as terminal devices, computer systems, servers, etc. can be described in the general context of computer system-executable instructions, such as program modules, executed by a computer system. Generally, program modules can include routines, programs, object programs, components, logic, data structures, etc., which perform specific tasks or implement specific abstract data types. The computer system / server can be implemented in a distributed cloud computing environment. In a distributed cloud computing environment, tasks can be executed by remote processing devices linked through a communication network. In a distributed cloud computing environment, program modules can be located on local or remote computing system storage media including storage devices.

[0028] In the process of implementing the present disclosure, the inventors found that in gas dynamic devices such as axial-flow transonic fans and compressors, the tip region is usually one of the parts where the flow is the most complex and the energy loss is the most concentrated. Controlling the flow field in the tip region of gas dynamic devices is beneficial to suppressing tip leakage vortices and reducing flow separation, thereby facilitating the expansion of the stable operating margin of gas dynamic devices. Currently, the methods for controlling the flow field in the tip region of gas dynamic devices include: casing treatment and boundary layer suction treatment. The casing treatment among them refers to changing the flow field distribution in the tip region by designing the inner wall of the casing of the gas dynamic device into a specific structure such as a serrated shape or a grooved shape, thereby weakening the intensity of the tip leakage vortex and delaying the flow separation of the airflow. The boundary layer suction treatment among them refers to actively extracting the low-energy fluid in the boundary layer by opening small holes or slits and other structures on the suction surface of the blade or the casing wall surface to prevent it from accumulating in the tip region and causing flow separation. However, the casing treatment technology has problems such as complex structure, insufficient operating condition adaptability, tip clearance sensitivity, and noise / vibration, while the boundary layer suction treatment technology has problems such as additional energy consumption, complex suction system structure, great difficulty in designing suction parameters, and poor cross-operating condition adaptability.

[0029] Although the use of plasma to control the flow field in the tip region has received attention in recent years, however, the existing technologies for using plasma to control the flow field in the tip region often sacrifice the working efficiency and working pressure ratio of gas dynamic devices in order to ensure the operating margin of gas dynamic devices, which is not conducive to improving the working performance of gas dynamic devices.

[0030] The technical solution of the gas dynamic device of the present disclosure can be applied to a variety of application scenarios. For example, it can be applied to application scenarios such as gas turbines for ground power generation and aero-engine design.

[0031] A specific example is that the gas dynamic equipment of an aeroengine may include: an axial-flow transonic fan (hereinafter simply referred to as the fan) and a transonic axial-flow compressor (hereinafter simply referred to as the compressor). The fan is usually arranged at the front end of the aeroengine, while the compressor is usually arranged downstream of the fan. The fan and the compressor are connected in series and operate in a coupled manner. Both the fan and the compressor in the aeroengine may adopt the structural features of the gas dynamic equipment in the present disclosure, or only the fan or the compressor may adopt the structural features of the gas dynamic equipment in the present disclosure. If the aeroengine has corresponding fixed-value requirements for working efficiency and working pressure ratio, the working efficiency and working pressure ratio of the fan located at the front end can be improved based on the technical solution of the present disclosure, while the working efficiency and working pressure ratio of the compressor located at the rear end can be maintained or reduced. If the aeroengine has no fixed-value requirements for working efficiency and working pressure ratio (such as as large as possible), the working efficiency and working pressure ratio of the fan located at the front end and the compressor located at the rear end can be effectively improved based on the technical solution of the present disclosure, so as to provide better power and working performance for the aeroengine.

[0032] Figure 1 FIG. is a schematic structural diagram of an embodiment of the gas dynamic equipment of the present disclosure. As Figure 1 shown, the gas dynamic equipment is an axial-flow-based gas dynamic equipment, that is, an axial-flow gas dynamic equipment. The gas dynamic equipment in the present disclosure refers to a device that uses air as the working medium and realizes specific functions through energy conversion. More specifically, the gas dynamic equipment may refer to a device that uses the pressure energy, kinetic energy, or internal energy of the gas to convert with mechanical energy to complete gas compression, transportation, expansion work, or power output. The gas dynamic equipment in the present disclosure may specifically be a fan or a compressor, etc., and the gas dynamic equipment mainly includes: a casing 1, a DBD (Dielectric Barrier Discharge) plasma actuator, a plurality of moving blades 2, a first insulating medium 3, an AC power supply 4, and a second insulating medium 6. The following will describe each component included in the gas dynamic equipment of the present disclosure with reference to Figure 1 and Figure 2 respectively.

[0033] Figure 1 The casing 1 in is mainly used to accommodate components such as the DBD plasma actuator, the rotor (including components such as the moving blades 2), the stator (including components such as the stationary blades), the first insulating medium 3, the AC power supply 4, and the second insulating medium 6, and the casing 1 is also used to enclose the compressed gas in the channel.

[0034] On the inner wall of the casing 1, a first insulating medium 3 is provided, and the first insulating medium 3 is arranged along the circumferential direction of the rotation of the moving blade 2, so that the shape of the first insulating medium 3 is annular, that is, the first insulating medium 3 can form an annular insulating medium. This annular insulating medium is opposite to the tip position of the moving blade 2. That is to say, the distance between this annular insulating medium and the tip of the moving blade 2 can be regarded as the tip clearance. The width of the annular insulating medium formed by the first insulating medium 3 should be greater than the width of the positive electrode 5 of the DBD plasma actuator (for example, the width of the positive electrode 5 can be 2-3 mm). For example, the width of the annular insulating medium can be at least twice the width of the positive electrode 5 of the DBD plasma actuator. The thickness of the annular insulating medium formed by the first insulating medium 3 is less than the wall thickness of the casing 1 and greater than the thickness of the positive electrode 5 of the DBD plasma actuator. For example, the thickness of the annular insulating medium can be about half of the wall thickness of the casing 1 and about twice the thickness of the positive electrode 5 of the DBD plasma actuator. In addition, the material of the first insulating medium 3 can be determined according to the actual conditions such as temperature, pressure, and voltage level in the gas dynamic equipment. For example, the material of the first insulating medium 3 can be plastic or rubber or composite material, etc. The present disclosure does not limit the material of the first insulating medium 3.

[0035] In one example, the first insulating medium 3 can be embedded in the inner wall of the casing 1, and the outer surface of the first insulating medium 3 is neither higher nor lower than the inner wall of the casing 1, that is, the first insulating medium 3 is flush-embedded in the inner wall of the casing 1. For example, Figure 1 the outer surface of the first insulating medium 3 in [reference] is flush with the inner wall of the casing 1, which is beneficial to avoiding contact between the moving blade 2 and the first insulating medium 3 during the rotation process.

[0036] The DBD plasma actuator in the present disclosure includes a positive electrode 5 and a negative electrode, and the positive electrode 5 of the DBD plasma actuator is also arranged along the circumferential direction of the rotation of the moving blade 2, so as to form an annular positive electrode. This annular positive electrode is arranged in the first insulating medium 3, so that the first insulating medium 3 isolates this annular positive electrode from the inner wall of the casing 1, that is, the first insulating medium 3 is used to isolate the annular positive electrode 5 from the inner wall of the casing 1. The positive electrode 5 of the DBD plasma actuator can be realized by using a flat wire. For example, the positive electrode 5 can be realized by using a flat wire with a width of 2-3 mm.

[0037] In the axial direction of the positive electrode 5 of the DBD plasma actuator, it is located upstream of the shock wave formed by the moving blade 2. The shock wave formed by the moving blade 2 can be called the cascade channel shock wave (such as Figure 1 the cascade channel shock wave B in [reference]). The axial direction of the positive electrode 5 of the DBD plasma actuator refers to: the direction perpendicular to the annular surface of the annular positive electrode 5. For example, the direction passing through the center of the annular surface formed by the positive electrode 5 of the DBD plasma actuator and perpendicular to the annular surface. Specifically,Figure 1 The incoming flow direction in [reference] is horizontal, and this horizontal direction is the axial direction of the positive electrode 5 of the DBD plasma actuator. In the present disclosure, the upstream refers to the upstream based on the incoming flow direction of the gas dynamic device, that is, the upstream with respect to the incoming flow direction of the gas dynamic device. Taking [reference] as an example, since Figure 1 as an example, since Figure 1 the incoming flow direction in [reference] is the horizontal direction from left to right. Therefore, for two points in this horizontal direction, the point on the left is located upstream of the point on the right. Since the annular positive electrode 5 is located upstream of the shock wave formed by the moving blade 2, the plasma formed by the DBD plasma actuator based on the annular positive electrode 5 (such as Figure 1 in [reference], the plasma region A formed by the DBD plasma actuator) can effectively act on the shock wave located downstream thereof, which is beneficial to avoiding the influence of the shock wave on the flow field in the tip region.

[0038] In one example, the positive electrode 5 of the DBD plasma actuator can be embedded in the first insulating medium 3, and the outer surface of the positive electrode 5 of the DBD plasma actuator is generally not higher than the outer surface of the first insulating medium 3, nor lower than the outer surface of the first insulating medium 3, that is, the positive electrode 5 of the DBD plasma actuator is flush-embedded in the first insulating medium 3. For example, Figure 1 in [reference], the outer surface of the positive electrode 5 of the DBD plasma actuator is flush with the outer surface of the first insulating medium 3, which is beneficial to avoiding contact between the moving blade 2 and the positive electrode 5 of the DBD plasma actuator during rotation.

[0039] In one example, in the axial direction of the positive electrode 5 of the DBD plasma actuator, the distance from the shock wave generated by the moving blade 2 can be 0 to 10 mm (millimeters). By limiting the distance between the positive electrode 5 of the DBD plasma actuator and the shock wave to 0 to 10 mm, it is beneficial to make the plasma formed by the DBD plasma actuator as much as possible located in the shock wave region, thereby enhancing the interaction between the plasma and the shock wave. A more specific example is that in the axial direction of the positive electrode 5 of the DBD plasma actuator, the distance from the shock wave generated by the moving blade 2 is 5 mm. Referring to Figure 1 , the distance between the rightmost end of the positive electrode 5 of the DBD plasma actuator and the cascade passage shock wave B in the axial direction (the same as the horizontal incoming flow direction in Figure 1 [reference]) is 5 mm. It should be noted that: the distance here refers to the distance in the upstream region of the shock wave.

[0040] The moving blade 2 of the present disclosure is mainly used to do work on the airflow by rotating at high speed, thereby converting mechanical energy into gas pressure energy. The present disclosure uses the moving blade 2 to form the negative electrode of the DBD plasma actuator, and a second insulating medium 6 is provided at the tip of the moving blade 2. For example, the upper end surface and both side surfaces with a certain height of the moving blade 2 are coated with the second insulating medium 6, so that the positive electrode 5 and the negative electrode of the DBD plasma actuator are isolated by the second insulating medium 6. Figure 2 A perspective view of a moving blade 2 in a gas power device is shown, Figure 2 LE in the left side of indicates the leading edge of the blade of the moving blade 2, Figure 2 TE in the right side of indicates the trailing edge of the blade of the moving blade 2, and shock indicates the shock wave formed by the moving blade 2 (i.e., Figure 1 the cascade passage shock wave B in ). Figure 2 The surface where the black block in is located is the upper end surface of the moving blade 2. In addition, the material of the second insulating medium 6 can also be determined according to the actual conditions such as temperature, pressure, and voltage level in the gas power device. For example, the material of the second insulating medium 6 can be plastic or rubber or composite material, etc. The present disclosure does not make specific limitations on the material of the second insulating medium 6.

[0041] In one example, the height range of the second insulating medium 6 provided at the tip of the moving blade 2 can be from 1 mm to 5 mm. By using the moving blade 2 to form the negative electrode of the DBD plasma actuator and restricting the height of the second insulating medium 6 provided at the tip, it is beneficial to make the plasma formed by the DBD plasma actuator concentrated in the tip region (such as Figure 1 the plasma region A in is located in the tip gap). In a more specific example, Figure 1 the height of the second insulating medium 6 provided at the tip of the moving blade 2 in is 1 mm.

[0042] In an example, the thickness of the second insulating medium 6 provided at the tip of the moving blade 2 may vary. For example, the thickness of the second insulating medium 6 provided in the upstream section of the tip of the moving blade 2 is often greater than that of the second insulating medium 6 provided in the downstream section. That is to say, if there are two points in the second insulating medium 6 provided at the tip of the moving blade 2, namely the first point and the second point, and if the first point belongs to the upstream section of the tip of the moving blade 2 while the second point belongs to the downstream section of the tip of the moving blade 2, then the thickness of the second insulating medium 6 at the position of the first point is greater than that of the second insulating medium 6 at the position of the second point; if both the first point and the second point belong to the upstream section of the tip of the moving blade 2, then the thickness of the second insulating medium 6 at the position of the first point may be the same as that of the second insulating medium 6 at the position of the second point; and if both the first point and the second point belong to the downstream section of the tip of the moving blade 2, then the thickness of the second insulating medium 6 at the position of the first point may be the same as that of the second insulating medium 6 at the position of the second point. Here, the upstream is also the upstream with reference to the oncoming flow direction of the gas dynamic device. A more specific example, Figure 1 In it, the oncoming flow direction is horizontal from left to right. If the first point is located on the left side of the second point, it can be considered that the above-mentioned first point is upstream of the second point and the second point is downstream of the first point. By making the thickness of the second insulating medium 6 in the downstream section less than that of the second insulating medium 6 in the upstream section, it is beneficial to concentrate the plasma formed by the DBD plasma actuator in the downstream section (such as Figure 1 the plasma region A in it is located closer to the blade trailing edge TE side of the moving blade 2). Since the shock wave generated by the rotation of the moving blade 2 is usually located in the downstream region of the tip of the moving blade 2 (such as Figure 1 the cascade channel shock wave B in it is located on the right side of the tip of the moving blade 2), therefore, it is beneficial to enhance the interaction between the plasma and the shock wave.

[0043] In an example, the second insulating medium 6 at the tip of the moving blade 2 may include a demarcation point, which is used to divide the second insulating medium 6 provided at the tip of the moving blade 2 into two parts in the oncoming flow direction (such as Figure 1 the left and right parts in it), that is, the upstream insulating medium (such as Figure 1 the left part in it) and the downstream insulating medium (such as Figure 1the right part in). The upstream insulating medium has a first thickness (i.e., the thickness at each point in the upstream insulating medium is the same, which is the first thickness), while the downstream insulating medium has a second thickness (i.e., the thickness at each point in the downstream insulating medium is the same, which is the second thickness), and the first thickness is greater than the second thickness. In an application scenario, the position of this demarcation point can be: in the axial direction of the positive electrode 5 of the DBD plasma actuator, the distance from the positive electrode 5 can be within a certain distance range, and this distance range is usually at the micron (μm) level. For example, it is 0 to 10 μm. In addition, this demarcation point should be located downstream of the positive electrode 5. More specifically, in the axial direction of the positive electrode 5 of the DBD plasma actuator, the demarcation point is downstream of the positive electrode 5 and the distance from the positive electrode 5 is 1 μm. Refer to Figure 1 , the distance between the rightmost end of the positive electrode 5 of the DBD plasma actuator and the demarcation point is 1 μm. The distance between the rightmost end of the positive electrode 5 of the DBD plasma actuator and the cascade passage shock wave B in the axial direction (the same as the Figure 1 horizontal incoming flow direction in) is a predetermined value (such as 5 mm), and when the distance between the rightmost end of the positive electrode 5 of the DBD plasma actuator and the demarcation point is another predetermined value (such as 1 μm), it is beneficial to ensure that the plasma formed by the DBD plasma actuator can act on the shock wave region as much as possible, thereby facilitating maximizing the interaction between the plasma and the shock wave.

[0044] In an example, when the demarcation point divides the second insulating medium 6 into an upstream insulating medium and a downstream insulating medium, the value range of the thickness of the upstream insulating medium can be one-third to one-half of the tip clearance of the moving blade 2, and the value range of the thickness of the downstream insulating medium can also be one-third to one-half of the tip clearance of the moving blade 2. However, it should be noted that the thickness of the upstream insulating medium should be greater than the thickness of the downstream insulating medium. By keeping the thicknesses of both the upstream insulating medium and the downstream insulating medium within one-third to one-half of the tip clearance, it is beneficial to further ensure that the plasma formed by the DBD plasma actuator acts completely in the shock wave region.

[0045] The AC power supply 4 in the present disclosure is respectively connected to the positive electrode 5 and the negative electrode (moving blade 2) of the DBD plasma actuator to facilitate providing power to the DBD plasma actuator, so that the DBD plasma actuator generates plasma of a certain intensity. Since the plasma interacts with the shock wave in the tip region, it is beneficial to suppress the leakage flow of the gas in the tip region of the moving blade 2.

[0046] Figure 3 is a flowchart of an embodiment of a method for controlling the tip region flow field of a gas dynamic device according to the present disclosure. As Figure 3The method shown mainly includes: S300, S301, S302, and S303. The following will explain Figure 3 each step in

[0047] S300. Determine the position of the shock wave generated by the moving blade 2 of the rotor of the gas dynamic device in the axial direction of the rotor.

[0048] The present disclosure can determine the position of the shock wave generated by the moving blade 2 of the rotor of the gas dynamic device in the axial direction of the rotor by means of experiments or numerical simulations. For example, an experiment is carried out using a model of a gas dynamic device to obtain the position of the shock wave generated by the moving blade 2 of the rotor of the gas dynamic device in the axial direction of the rotor. For another example, numerical simulations are carried out using the various parameters of the gas dynamic device to obtain the position of the shock wave generated by the moving blade 2 of the rotor of the gas dynamic device in the axial direction of the rotor. The present disclosure does not limit the specific implementation manner for determining the position of the shock wave generated by the moving blade 2 of the rotor of the gas dynamic device in the axial direction of the rotor. In addition, the gas dynamic device in this step can be an axial-based transonic fan or compressor, etc.

[0049] S301. Upstream of the above position, along the circumferential direction of the rotation of the moving blade 2 of the rotor, set the positive electrode 5 of the DBD plasma actuator in the first insulating medium 3 to form an annular positive electrode.

[0050] The first insulating medium 3 in the present disclosure is arranged on the inner wall of the casing 1 of the gas dynamic device along the circumferential direction of the rotation of the moving blade 2, thereby forming an annular insulating medium. This annular insulating medium faces the tip of the moving blade 2, and the first insulating medium 3 is mainly used to isolate the annular positive electrode from the inner wall of the casing 1. The upstream here is the upstream based on the oncoming flow direction of the gas dynamic device.

[0051] In one example, the present disclosure can set the annular positive electrode within an interval of 0 to 10 mm (millimeters) from the position obtained in S300 in the axial direction of the positive electrode 5 of the DBD plasma actuator (i.e., the axial direction of the rotor). In a more specific example, the present disclosure can set the positive electrode at a position 5 mm away from the position obtained in S300 in the axial direction of the positive electrode 5 of the DBD plasma actuator, thereby forming an annular positive electrode, that is Figure 1 the rightmost end of the positive electrode 5 of the DBD plasma actuator in Figure 1 is 5 mm away from the shock wave B of the cascade channel in the above axial direction (the same as the

[0052] S302. Set a second insulating medium 6 on the tip of the moving blade 2. The second insulating medium 6 isolates the positive electrode 5 of the DBD plasma actuator from the negative electrode, and the moving blade 2 is used as the negative electrode of the DBD plasma actuator.

[0053] In one example, the height range of the second insulating medium 6 provided at the tip of the moving blade 2 in the present disclosure can be from 1 mm to 5 mm. For example, the second insulating medium 6 with a height of 1 mm is provided at the tip of the moving blade 2.

[0054] In one example, when the present disclosure provides the second insulating medium 6 at the tip of the moving blade 2, the thickness of the second insulating medium 6 at the tip can be different. For example, the thickness of the second insulating medium 6 provided in the upstream section of the tip of the moving blade 2 can be greater than the thickness of the second insulating medium 6 provided in the downstream section. In a more specific example, the present disclosure can first determine a demarcation point on the tip of the moving blade 2, and when providing the second insulating medium 6 upstream and downstream of the demarcation point respectively, make the thickness of the upstream insulating medium greater than the thickness of the downstream insulating medium.

[0055] In one application scenario, the present disclosure can first, in the axial direction of the positive electrode 5 of the DBD plasma actuator, with the positive electrode 5 as a reference point, demarcate a distance range (the distance from the reference point can be at the micron level, such as 0 to 10 μm) downstream of the reference point, and use one point within this distance range as the demarcation point. For example, use the point at a distance of 1 μm from the positive electrode 5 in its axial direction within this distance range as the demarcation point.

[0056] In one example, after determining the demarcation point, the present disclosure can determine the thickness of the upstream insulating medium and the thickness of the downstream insulating medium according to the range from one-third to one-half of the tip clearance of the moving blade 2. However, it should be noted that the thickness of the upstream insulating medium in the present disclosure is always greater than the thickness of the downstream insulating medium.

[0057] S303. Verify the rotor operating characteristic parameters of the gas dynamic device according to experimental or numerical simulation methods.

[0058] In one example, the rotor operating characteristic parameters in the present disclosure can include: operating pressure ratio (such as total pressure ratio) and operating efficiency, etc. The operating pressure ratio (such as total pressure ratio) among them is the core parameter for measuring the supercharging ability of the gas dynamic device, and specifically can be the ratio of the total gas pressure at the outlet section of the gas dynamic device to the total gas pressure at the inlet section. The operating efficiency among them is the core parameter for measuring the effectiveness of energy conversion, and specifically can be the ratio of the energy consumed in the actual compression process to the energy required in an ideal reversible (such as isentropic) compression process.

[0059] When verifying the rotor working characteristic parameters of a gas dynamic device by experimental means, the present disclosure may first not supply power to the DBD plasma actuator using the AC power supply 4. For example, the connection between the AC power supply 4 and the positive electrode 5 and the negative electrode of the DBD plasma actuator may not be connected first. Then, the gas dynamic device (such as Rotor 37) is operated under full operating conditions, and through measurement and other means, the rotor working characteristic parameters of the gas dynamic device are obtained and recorded as the first set of rotor working characteristic parameters. After that, the working voltage (U) and working frequency (f) of the AC power supply 4 are set. The working voltage may be a working power supply within the range of 5 - 20 kV, and the working frequency may be a working frequency within the range of 3 - 20 kHz. The present disclosure may set the working voltage and working frequency according to empirical values. For example, the working voltage may be set to 10 kV and the working frequency may be set to 5 kHz. The connection between the AC power supply 4 and the positive electrode 5 and the negative electrode of the DBD plasma actuator is connected. The AC power supply 4 supplies power to the DBD plasma actuator using the set working voltage and working frequency, and the gas dynamic device is operated under full operating conditions. The plasma generated by the DBD plasma actuator can locally induce an electric field force in the tip region, axially accelerating the flow field in the tip region. The present disclosure can obtain the rotor working characteristic parameters of the gas dynamic device under full operating conditions through measurement and other means, and record them as the second set of rotor working characteristic parameters.

[0060] When verifying the rotor working characteristic parameters of a gas dynamic device by numerical simulation means, the present disclosure may use the following formula (1) to determine the plasma excitation effect of the DBD plasma actuator:

[0061] F = 1.07×10 -6 Uf / d Formula (1)

[0062] In the above formula (1), F represents the body force, and the unit is N / m 3 (i.e., N / m³). That is to say, the present disclosure takes the body force F corresponding to the plasma generated by the plasma actuator as the excitation effect of the plasma; U represents the working voltage of the AC power supply 4 (such as U can be 10 kV), f represents the working frequency of the AC power supply 4 (such as f can be 5 kHz), and d represents the distance between the demarcation point and the positive electrode 5 in the oncoming flow direction (such as 1 μm). And an example of the position and direction of F calculated using this formula (1) is as Figure 2 shown, Figure 2 the arrow direction in Figure 2 represents the direction of the body force F, and Figure 1 the position of the leftmost arrow of F in Figure 2The position of the rightmost arrow of F in corresponds to Figure 1 the rightmost end of the plasma region A in.

[0063] The present disclosure can perform an integral calculation on the volume force calculated by the above formula (1) to obtain the total volume force within the plasma region A, and equivalent the total volume force to the plasma excitation effect. By adding the total volume force to the fluid control equation, the flow field of the gas dynamic device after excitation control can be simulated, and the rotor working characteristic parameters of the gas dynamic device can be obtained according to the simulation results, denoted as the third group of rotor working characteristic parameters. In addition, the present disclosure can also simulate the process of the gas dynamic device without excitation control, and obtain the rotor working characteristic parameters of the gas dynamic device according to the simulation results.

[0064] The above-mentioned first group of rotor working characteristic parameters, second group of rotor working characteristic parameters, and third group of rotor working characteristic parameters can be as Figure 4 and Figure 5 shown. Among them Figure 4 is the total pressure ratio comparison chart obtained by experiments and numerical simulations for Rotor37 (a compressor). Figure 4 In, the abscissa m (kg / s) represents the working flow rate of the rotor, and the ordinate π represents the total pressure ratio at the inlet and outlet of the rotor. Figure 4 The solid line in represents the numerical simulation result with excitation control, that is, the total pressure ratio under full working conditions obtained by adopting the technical solution of the present disclosure. Figure 4 The dashed line in represents the numerical simulation result without excitation control. Figure 4 The dots in represent the total pressure ratio with excitation control obtained by experimental means. From Figure 4 it can be seen that, compared with the numerical simulation result without excitation control, after excitation control, the total pressure ratio of Rotor37 can be increased by 0.5%. Among them Figure 5 is the working efficiency comparison chart obtained by experiments and numerical simulations for Rotor37. Figure 5 In, the abscissa m (kg / s) represents the working flow rate of the rotor, and the ordinate η represents the working efficiency of the rotor. Figure 5 The solid line in represents the numerical simulation result with excitation control. Figure 5 The dashed line in represents the numerical simulation result without excitation control. Figure 5 The dots in represent the working efficiency with excitation control obtained by experimental means. From Figure 5 it can be seen that, compared with the experiment without excitation control, the experiment with excitation control and the numerical simulation result with excitation control, the working efficiency of Rotor37 can be increased by 0.8%. It can be seen from this that the present disclosure realizes the synchronous improvement of multiple performances under full working conditions at a given design speed by performing excitation control in Rotor37.

[0065] In one example, the present disclosure can further improve the working performance of a gas power device under all working conditions by adjusting the working voltage and / or working frequency of a DBD plasma actuator. The specific process is as follows:

[0066] First, set the working voltage and working frequency of the DBD plasma actuator. For example, set the working voltage and working frequency of the DBD plasma actuator using empirical values, and based on the currently set working voltage and working frequency, make the AC power supply 4 supply power to the DBD plasma actuator. Obtain a set of working characteristic parameters of the rotor of the gas power device by means of experiments or numerical simulations.

[0067] Second, according to a predetermined step size, adjust the working voltage or the working frequency of the DBD plasma actuator, and based on the adjusted working voltage and working frequency, make the AC power supply 4 supply power to the DBD plasma actuator. Obtain a set of working characteristic parameters of the rotor of the gas power device by means of experiments or numerical simulations.

[0068] There are various ways for the present disclosure to adjust the working voltage and working frequency of the DBD plasma actuator using a predetermined step size. However, usually, only one of them can be adjusted at a time. The present disclosure can alternately adjust the working voltage and working frequency of the DBD plasma actuator. For example, for the first time, adjust the working voltage while keeping the current working frequency; for the second time, adjust the working frequency while keeping the current working voltage; for the third time, adjust the working voltage while keeping the current working frequency. For another example, for the first time, adjust the working voltage while keeping the current working frequency; for the second time, still adjust the working voltage while keeping the current working frequency,... until the working voltage is no longer adjusted. After that, while keeping the working voltage, adjust the working frequency each time. When the present disclosure adjusts the working voltage, it can gradually increase the working voltage of the DBD plasma actuator according to a predetermined step size. When the present disclosure adjusts the working frequency, it can gradually increase the working frequency of the DBD plasma actuator according to a predetermined step size.

[0069] Finally, the present disclosure can compare all the sets of working characteristic parameters obtained currently, and determine the working voltage and working frequency of the DBD plasma actuator during the operation of the gas power device in combination with actual requirements and the comparison results. For example, the working voltage and working frequency corresponding to the set with the best working characteristic parameters can be used as the working voltage and working frequency of the DBD plasma actuator.

[0070] Next, refer to Figure 6 to describe the electronic device according to an embodiment of the present disclosure. Figure 6A block diagram of an electronic device according to an embodiment of the present disclosure is shown. As Figure 6 shown, the electronic device 61 includes one or more processors 611 and a memory 612.

[0071] The processor 611 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 61 to perform desired functions.

[0072] The memory 612 may include one or more computer program products, and the computer program products may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory, for example, may include: random access memory (RAM) and / or cache memory, etc. The non-volatile memory, for example, may include: read-only memory (ROM), hard disk, and flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage media, and the processor 611 may run the program instructions to implement the method for controlling the flow field in the tip region of a gas power device in various embodiments of the present disclosure described above and / or other desired functions.

[0073] In one example, the electronic device 61 may further include: an input device 613 and an output device 614, etc., and these components are interconnected through a bus system and / or other forms of connection mechanisms (not shown). In addition, the input device 613 may include, for example, a keyboard, a mouse, etc. The output device 614 may output various information to the outside. The output device 614 may include, for example, a display, a speaker, a printer, and a communication network and its connected remote output devices, etc.

[0074] Of course, for simplicity, Figure 6 only some of the components in the electronic device 61 related to the present disclosure are shown in, and components such as buses, input / output interfaces, etc. are omitted. In addition, according to specific application scenarios, the electronic device 61 may further include any other appropriate components.

[0075] Exemplary computer program products and computer-readable storage media

[0076] In addition to the above methods and devices, embodiments of the present disclosure may also be computer program products, which include computer program instructions that, when run by a processor, cause the processor to execute the steps in the method for controlling the flow field in the tip region of a gas power device according to various embodiments of the present disclosure described in the "Exemplary Method" section above in this specification.

[0077] The computer program product can be written in any combination of one or more programming languages for programming code to perform the operations of the embodiments of the present disclosure. The programming languages include object-oriented programming languages such as Java, C++, etc., and also include conventional procedural programming languages such as the "C" language or similar programming languages. The programming code can be executed entirely on the user's computing device, partially on the user's device, executed as an independent software package, partially on the user's computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0078] In addition, an embodiment of the present disclosure can also be a computer-readable storage medium storing computer program instructions, which when run by a processor cause the processor to execute the steps in the method of controlling the flow field in the tip region of a gas dynamic device according to various embodiments of the present disclosure described in the above "Exemplary Method" section of this specification.

[0079] The computer-readable storage medium can adopt any combination of one or more readable media. The readable media can be a readable signal medium or a readable storage medium. The readable storage medium can, for example, include but is not limited to an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the above. More specific examples (non-exhaustive list) of the readable storage medium can include: an electrical connection having one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0080] The basic principles of the present disclosure have been described above in conjunction with specific embodiments. However, it should be noted that the advantages, benefits, effects, etc. mentioned in the present disclosure are only examples and not limitations, and it cannot be considered that these advantages, benefits, and effects, etc. are essential for each embodiment of the present disclosure. In addition, the above-disclosed specific details are only for the purposes of illustration and facilitating understanding, and are not limitations. The above details do not limit the present disclosure to necessarily adopt the above specific details for implementation.

[0081] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For system embodiments, since they basically correspond to method embodiments, the description is relatively simple, and the relevant parts can be referred to the description of the method embodiments.

[0082] The block diagrams of the devices, apparatuses, equipment, and systems involved in this disclosure are merely illustrative examples and are not intended to require or imply that the connection, arrangement, and configuration must be carried out in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open-ended terms, meaning "including but not limited to", and can be used interchangeably with each other. The word "or" and "and" used herein refer to the word "and / or", and can be used interchangeably with it, unless the context clearly indicates otherwise. The word "such as" used herein refers to the phrase "such as but not limited to", and can be used interchangeably with it.

[0083] The methods and apparatuses of this disclosure can be implemented in many ways. For example, the methods and apparatuses of this disclosure can be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of the steps for the methods is for illustration only, and the steps of the methods of this disclosure are not limited to the specific order described above, unless otherwise specifically stated. In addition, in some embodiments, this disclosure can also be implemented as a program recorded in a recording medium, and these programs include machine-readable instructions for implementing the methods according to this disclosure. Therefore, this disclosure also covers the recording medium storing the programs for executing the methods according to this disclosure.

[0084] It should also be noted that in the apparatuses, equipment, and methods of this disclosure, each component or each step can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent solutions of this disclosure.

[0085] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this disclosure. Therefore, this disclosure is not intended to be limited to the aspects shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

[0086] The above description has been given for purposes of illustration and description. In addition, this description is not intended to limit the embodiments of this disclosure to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions, and sub-combinations thereof.

Claims

1. A gas-powered device, characterized in that, The gas dynamic device is an axial-flow based transonic fan or compressor, and the gas dynamic device includes: a casing (1), a dielectric barrier discharge (DBD) plasma actuator, a plurality of moving blades (2), a first insulating medium (3), an AC power supply (4), and a second insulating medium (6), and the DBD plasma actuator, the plurality of moving blades (2), the first insulating medium (3), and the second insulating medium (6) are all arranged inside the casing (1); The first insulating medium (3) is arranged on the inner wall of the casing (1), and the first insulating medium (3) is arranged circumferentially along the rotation of the moving blade (2) to form an annular insulating medium, and the annular insulating medium is opposite to the tip of the moving blade (2); The positive electrode (5) of the DBD plasma actuator is arranged circumferentially along the rotation of the moving blade (2) to form an annular positive electrode, and the annular positive electrode is arranged in the first insulating medium (3), and the first insulating medium (3) isolates the annular positive electrode from the inner wall of the casing (1). The annular positive electrode is located upstream of the shock wave formed by the moving blade (2). In its axial direction, the distance between the annular positive electrode and the shock wave includes: 0 to 10 millimeters, and the upstream is the upstream based on the incoming flow direction of the gas dynamic device; The moving blade (2) is used as the negative electrode of the DBD plasma actuator, and a second insulating medium (6) is arranged at the tip of the moving blade (2), and the second insulating medium (6) isolates the positive electrode (5) and the negative electrode of the DBD plasma actuator; for any two points in the second insulating medium (6) arranged at the tip of the moving blade (2), the thickness of the second insulating medium (6) at the position of the point located upstream is not less than the thickness of the second insulating medium (6) at the position of the point located downstream; The AC power supply (4) is respectively connected to the positive electrode (5) and the negative electrode of the DBD plasma actuator, and is used to supply power to the DBD plasma actuator to make the DBD plasma actuator generate plasma, and the plasma acts on the shock wave formed by the rotation of the moving blade (2).

2. The device according to claim 1, wherein: The first insulating medium (3) is embedded in the inner wall of the casing (1), and the outer surface of the first insulating medium (3) is not higher than the inner wall of the casing (1); The annular positive electrode is embedded in the first insulating medium (3), and the outer surface of the annular positive electrode is not higher than the outer surface of the first insulating medium (3).

3. The device according to claim 1, characterized in that, In its axial direction, the distance between the annular positive electrode and the shock wave includes: 5 millimeters.

4. The device according to claim 1, characterized in that, The height of the second insulating medium (6) arranged at the tip of the moving blade (2) includes: 1 to 5 millimeters.

5. The device according to claim 1, characterized in that, The second insulating medium (6) provided at the tip of the moving blade (2) includes a demarcation point that divides the second insulating medium (6) provided at the tip of the moving blade (2) into an upstream insulating medium and a downstream insulating medium. The thickness of the upstream insulating medium is the same, the thickness of the downstream insulating medium is the same, and the thickness of the upstream insulating medium is greater than that of the downstream insulating medium.

6. The device according to claim 5, characterized in that, The distance of the demarcation point from the annular positive electrode in the axial direction of the annular positive electrode includes 0 to 10 micrometers, and the demarcation point is located downstream of the annular positive electrode. Wherein, the downstream includes the downstream based on the incoming flow direction of the gas power device.

7. The device according to claim 5, characterized in that, The thicknesses of the upstream insulating medium and the downstream insulating medium include one-third to one-half of the tip clearance of the moving blade (2).

8. A method for controlling the flow field in the tip region of a gas-powered device, characterized in that, The method includes: Determining the position of the shock wave generated by the moving blade (2) of the rotor of the gas power device in the axial direction of the rotor; wherein, the gas power device is an axial-flow transonic fan or compressor. Upstream of the position, along the circumferential direction of rotation of the moving blade (2), arranging the positive electrode (5) of the DBD plasma actuator in the first insulating medium (3) to form an annular positive electrode; wherein, the first insulating medium (3) is arranged along the circumferential direction of rotation of the moving blade (2) on the inner wall of the casing (1) of the gas power device to form an annular insulating medium. The annular insulating medium faces the tip of the moving blade (2). The first insulating medium (3) isolates the annular positive electrode from the inner wall of the casing (1). The distance of the annular positive electrode from the shock wave in its axial direction includes 0 to 10 millimeters, and the upstream is the upstream based on the incoming flow direction of the gas power device; for any two points in the second insulating medium (6) provided at the tip of the moving blade (2), the thickness of the second insulating medium (6) at the position of the point located upstream is not less than the thickness of the second insulating medium (6) at the position of the point located downstream. Arranging a second insulating medium (6) at the tip of the moving blade (2) to isolate the positive electrode (5) of the DBD plasma actuator from the negative electrode; wherein, the moving blade (2) is used as the negative electrode of the DBD plasma actuator. Verifying the rotor operating characteristic parameters of the gas power device according to experimental or numerical simulation methods.

9. The method according to claim 8, characterized in that, The verifying the rotor operating characteristic parameters of the gas power device according to experimental or numerical simulation methods includes: Setting the operating voltage and operating frequency of the DBD plasma actuator, enabling the AC power supply (4) to supply power to the DBD plasma actuator based on the operating voltage and the operating frequency, and obtaining a set of operating characteristic parameters of the rotor of the gas power device by experimental or numerical simulation methods. Adjust the operating voltage or operating frequency of the DBD plasma actuator according to a predetermined step size, so that the AC power supply (4) provides power for the DBD plasma actuator based on the adjusted operating voltage and operating frequency, and obtain a set of operating characteristic parameters of the rotor of the gas power equipment by means of experiments or numerical simulations; Determine the operating voltage and operating frequency of the DBD plasma actuator according to the comparison of multiple sets of operating characteristic parameters.

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