Array type jet flow control flat plate flow separation device

Abstract

The utility model provides an array type jet flow control flat plate flow separation device, and belongs to the technical field of pneumatic control. The device comprises a flat plate piece, a jet flow assembly and a control assembly, the flat plate piece is provided with at least two jet flow holes, the jet flow assembly comprises at least two exciters, the number of the exciters is at least two, the exciters are arranged in the at least two jet flow holes respectively, and the exciters can jet or absorb fluid. The control assembly comprises a monitoring module and an adjusting module, the monitoring module is configured to monitor fluid on the surface of the flat plate piece, the monitoring module is electrically connected with the adjusting module, the adjusting module is electrically connected with the jet flow assembly, so that the adjusting module can adjust the fluid sprayed or absorbed by the exciters according to the monitoring module, and the exciters are mutually independent; therefore, each exciter can be independently controlled by the adjusting module. According to the device, the active control effect on the fluid flowing around the flat plate piece can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic control technology, and in particular to an array-type jet control flat plate flow separation device. Background Technology

[0002] The problem of flow around a flat plate is widespread in aerospace, automotive, and wind power industries. Especially at high angles of attack or high Reynolds numbers, flow separation easily occurs when airflow surrounds a flat plate, leading to vortex-induced vibration, aerodynamic noise, energy loss, and deteriorated aerodynamic characteristics, severely impacting equipment performance and stability. Related flow control methods are mostly passive, such as changing the shape of the plate or using guide vanes. While passive control can achieve some effect, these methods cannot adapt to complex wind fields in reality and cannot adjust the flow state in real time. In recent years, active flow control technology, especially synthetic jet technology, has received widespread attention. This technology arranges jet components on the surface of a flat plate to adjust the flow structure, suppress flow separation, and improve aerodynamic performance.

[0003] In related technologies, multiple exciters installed in the jet holes of the flat plate cannot be controlled individually, resulting in problems such as insufficient jet control accuracy and poor jet control effect in the devices for controlling the flow separation of the flat plate. Utility Model Content

[0004] This invention provides an array-type jet control plate flow separation device, the purpose of which is to improve the active control effect of the array-type jet control plate flow separation device on the fluid flowing around the plate.

[0005] To achieve the above objectives, this utility model provides an array-type jet control flat plate flow separation device, comprising:

[0006] A flat plate having jet holes, wherein the number of jet holes is at least two;

[0007] A jet assembly includes an actuator, the number of which is at least two, the at least two actuators being respectively disposed in at least two jet orifices, the actuators being capable of jetting or absorbing fluid;

[0008] A control component includes a monitoring module and an adjustment module. The monitoring module is configured to monitor the fluid on the surface of the flat plate. The monitoring module is electrically connected to the adjustment module, which is electrically connected to the jet assembly, so that the adjustment module can adjust the fluid ejected or absorbed by the actuator according to the monitoring module.

[0009] Each of the exciters is independent of the others, so that each of the exciters can be independently controlled by the adjustment module.

[0010] In one embodiment, the jet assembly further includes a power source electrically connected to the adjustment module. The power source is configured to drive the actuator to eject or absorb fluid. The number of power sources is one, and the adjustment module can control the power source so that one power source can drive one or at least two actuators.

[0011] In one embodiment, the number of power sources corresponds one-to-one with the number of actuators, and each power source is independent of the others, so that multiple power sources can drive their respective actuators.

[0012] In one embodiment, the jet orifices are configured in an array, and the number of actuators corresponds one-to-one with the number of jet orifices.

[0013] In one embodiment, the adjustment module includes a processing unit electrically connected to the jet assembly, enabling the adjustment module to adjust the fluid ejected or absorbed by the actuator according to the monitoring module.

[0014] In one embodiment, the exciter includes a housing and a vibrating diaphragm disposed within the housing. The housing and the vibrating diaphragm enclose a first injection chamber. The housing has a first injection port that communicates with the first injection chamber. When the vibrating diaphragm vibrates within the housing, the first injection port can inject or absorb fluid.

[0015] In one embodiment, the outer shell and the vibrating diaphragm can further enclose a second injection chamber. The outer shell has a second injection port, which communicates with the second injection chamber. When the vibrating diaphragm vibrates within the outer shell, the first injection port and the second injection port can alternately inject or absorb fluid.

[0016] In one embodiment, the actuator further includes a slider configured to open or close the first injection port and / or the second injection port.

[0017] The above-mentioned solution of this utility model has the following beneficial effects:

[0018] In this embodiment, the actuators are independent of each other, and each actuator can be independently controlled by the adjustment module. This allows the adjustment module to control each actuator individually with greater precision, enabling the array-type jet control plate flow separation device of this application to selectively activate some or all of the actuators at the corresponding positions based on the characteristics of the fluid flowing around the plate. This improves the control accuracy of the jet assembly, thereby allowing the jet assembly to apply more precise active control to the fluid flowing around the plate, which helps the array-type jet control plate flow separation device achieve a more ideal active control effect.

[0019] Other beneficial effects of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the flat plate component in one embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the assembly of the exciter and the power source in one embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of an array-type jet control plate flow separation device in one embodiment of the present invention. Electrical connections are indicated by dashed lines with arrows in the figure.

[0023] Figure 4 This is a schematic diagram of the exciter in one embodiment of the present invention.

[0024] [Explanation of Labels in the Attached Image]

[0025] 1. Flat plate component; 11. Jet orifice; 2. Jet assembly; 21. Exciter; 211. Housing; 2111. First jet nozzle; 2112. Second jet nozzle; 2113. First jet chamber; 2114. Second jet chamber; 212. Vibrating diaphragm; 213. Slider; 22. Power source; 3. Control assembly; 31. Monitoring module; 32. Adjustment module. Detailed Implementation

[0026] To make the technical problems, solutions, and advantages of this utility model clearer, a detailed description will be provided below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a locking connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] This application provides an array-type jet control flat plate flow separation device. Please refer to [link to relevant documentation]. Figures 1-3 The array-type jet control flat plate flow separation device includes a flat plate component 1, a jet assembly 2, and a control assembly 3. The flat plate component 1 can be a flat plate structure on a bridge, a flat plate structure on a billboard, or even an aircraft wing. (See also...) Figure 1 The flat plate 1 has jet holes 11, and the number of jet holes 11 is at least two. For example, the number of jet holes 11 can be two, five, or ten. The specific number of jet holes 11 can be determined according to the size of the flat plate 1 and the characteristics of the fluid flowing around the flat plate 1. Please refer to [link to relevant documentation]. Figure 2 The jet assembly 2 includes an actuator 21, which is configured to eject or absorb fluid. The number of actuators 21 is at least two; for example, there can be two, five, or ten actuators 21. At least two actuators 21 are respectively disposed within at least two jet orifices 11. It should be noted that multiple actuators 21 disposed within multiple jet orifices 11 can mean that the number of actuators 21 corresponds one-to-one with the number of jet orifices 11, i.e., one actuator 21 is arranged within one jet orifice 11, or it can mean that two or more actuators 21 are arranged within one jet orifice 11. Please refer to [link to relevant documentation]. Figure 3The control component 3 includes a monitoring module 31 and an adjustment module 32. The monitoring module 31 can be located near the jet hole 11 on the plate 1 or near the exciter 21. The monitoring module 31 is configured to monitor the fluid on the surface of the plate 1. For example, the monitoring module 31 can be a pressure and / or velocity sensor located near the jet hole 11 on the plate 1 to obtain the velocity and pressure of the fluid on the surface of the plate 1 at the location of the jet hole 11. The monitoring module 31 is electrically connected to the adjustment module 32. The adjustment module 32 is electrically connected to the jet assembly 2 so that the adjustment module 32 can adjust the exciter 21 to spray or absorb fluid according to the monitoring module 31. For example, the adjustment module 32 can control the exciter 21 to spray or absorb fluid at different angles, pressures, and frequencies based on the velocity and pressure of the fluid on the surface of the plate 1 at the location of the jet hole 1 obtained by the monitoring module 31, so as to actively change the fluid characteristics flowing around the plate 1, which is beneficial to improving the aerodynamic performance of the plate 1 and reducing the possibility of flow separation on the plate 1. The fluid can be a gas or a liquid. In this application, the exciters 21 are all independent of each other, so that each exciter 21 can be independently controlled by the adjustment module 32.

[0030] For example, when fluid flows around the plate 1 at a high angle of attack or when the Reynolds number of the fluid is large, flow separation is likely to occur on the plate 1. The monitoring module 31 can monitor the pressure and / or velocity of the fluid near the actuator 21 located in the jet orifice 11 and output the monitored results to the regulating module 32. The regulating module 32 can control the independent actuators 21 to spray or absorb the corresponding fluid in real time according to the monitoring results of the monitoring module 31. Depending on the pressure and / or velocity of the fluid flowing around the plate 1, the regulating module 32 can control only one actuator 21 to operate, control some actuators 21 to operate, or control all actuators 21 to operate together, so that the fluid flowing around the plate 1 can be actively controlled appropriately.

[0031] In this embodiment, the actuators 21 are independent of each other, and each actuator 21 can be independently controlled by the adjustment module 32. This allows the adjustment module 32 to control each actuator 21 more precisely, so that the array-type jet control plate flow separation device of this application can selectively activate some or all of the actuators 21 at the corresponding positions according to the characteristics of the fluid flowing around the plate 1. This improves the control accuracy of the jet assembly 2, thereby enabling the jet assembly 2 to apply more precise active control to the fluid flowing around the plate 1. This helps the array-type jet control plate flow separation device achieve a more ideal active control effect.

[0032] In one embodiment, please refer to Figure 2 and Figure 3The jet assembly 2 also includes a power source 22, which is electrically connected to the regulating module 32 so that the regulating module 32 can control the power source 22. The power source 22 is configured to drive the actuator 21 to spray or absorb fluid. For example, when the power source 22 is controlled by the regulating module 32, the power source 22 can drive the corresponding actuator 21 to spray or absorb fluid. There is one power source 22. The regulating module 32 can control the power source 22 so that one power source 22 can drive one or at least two actuators 21. That is, one power source 22 can drive one actuator 21 to operate, or it can control some actuators 21 to operate, or it can control all actuators 21 to operate together. This saves space in the array-type jet control plate flow separation device and facilitates the arrangement of various components in the array-type jet control plate flow separation device.

[0033] In one embodiment, please refer to Figure 2 and Figure 3 The number of power sources 22 corresponds one-to-one with the number of exciters 21. Each power source 22 is independent of the others, so that multiple power sources 22 can drive the corresponding exciters 21 respectively. That is, one power source 22 drives one exciter 21. For example, the adjustment module 32 can control the corresponding power source 22 to drive the corresponding exciter 21 to move. This makes it easier for the jet assembly 2 to apply more precise active control to the fluid flowing around the plate 1, and helps the array jet control plate flow separation device achieve a more ideal active control effect.

[0034] In one embodiment, please refer to Figure 1 and Figure 3 The jet holes 11 are configured in an array, for example, in a rectangular array, meaning that jet holes 11 are provided in both the length and width directions of the plate 1, so that the jet holes 11 are arranged relatively evenly on the plate 1. The number of actuators 21 corresponds one-to-one with the number of jet holes 11, so that the actuators 21 can also be configured in a rectangular array. The actuators 21 arranged in a rectangular array are arranged relatively evenly, which helps to reduce the positional variables of the actuators 21 in the process of actively controlling the fluid flowing around the plate 1, thereby helping the array-type jet control plate flow separation device to achieve a more ideal active control effect.

[0035] It is understood that the arrangement of the jet holes 11 on the flat plate 1 is not limited, and the arrangement of the jet holes 11 on the flat plate 1 can also be adjusted according to the characteristics of the fluid flowing around the flat plate 1. For example, the jet holes 11 are distributed in a triangular pattern on the flat plate 1.

[0036] In one embodiment, the adjustment module 32 includes a processing unit electrically connected to the jet assembly 2 to quickly process the velocity and pressure of the fluid on the surface of the plate 1 at the location of the jet orifice 11 monitored by the monitoring component 31 in real time. This allows the adjustment module 32 to adjust the exciter 21 to spray or absorb fluid according to the monitoring module 31, which helps to improve the speed at which the control component 3 feeds back the characteristics of the fluid flowing around the plate 1 to the jet assembly 2. Consequently, the jet assembly 2 can spray or absorb airflow in real time according to the characteristics of the fluid flowing around the plate 1, thereby implementing real-time active control of the fluid flowing around the plate 1. This improves the active control effect of the array-type jet control plate flow separation device on the fluid flowing around the plate 1.

[0037] In one embodiment, please refer to Figure 4 The exciter 21 includes a housing 211 and a vibrating diaphragm 212. The vibrating diaphragm 212 is disposed inside the housing 211. The housing 211 and the vibrating diaphragm 212 surround a first injection chamber 2113. The housing 211 has a first injection port 2111. The first injection port 2111 communicates with the first injection chamber 2113. When the vibrating diaphragm 212 vibrates inside the housing 211, the first injection port 2111 can spray or absorb fluid.

[0038] For example, the power source 22 is configured to drive the diaphragm 212 to vibrate within the housing 211. When the diaphragm 212 deforms and compresses the first injection chamber 2113, gas or liquid in the first injection chamber 2113 can be ejected from the first injection port 2111. When the diaphragm 212 deforms and expands the first injection chamber 2113, external gas or liquid can be absorbed into the first injection chamber 2113 from the first injection port 2111.

[0039] In this embodiment, the exciter 21 can spray or absorb fluid by vibrating the diaphragm 212 inside the housing 211, making the structure of the exciter 21 relatively simple and convenient to use.

[0040] In one embodiment, please refer to Figure 4 The outer shell 211 and the vibrating diaphragm 212 can also enclose a second injection chamber 2114, that is, the outer shell 211 is divided into a first injection chamber 2113 and a second injection chamber 2114 by the vibrating diaphragm 212. The outer shell 211 has a second injection port 2112, which is connected to the second injection chamber 2114. When the vibrating diaphragm 212 vibrates in the outer shell 211, the first injection port 2111 and the second injection port 2112 can alternately spray or absorb fluid.

[0041] Exemplarily, the power source 22 is configured to drive the diaphragm 212 to vibrate within the housing 211. When the diaphragm 212 deforms and compresses the first injection chamber 2113, the second injection chamber 2114 expands accordingly, allowing gas or liquid within the first injection chamber 2113 to be ejected from the first injection port 2111, and external gas or liquid to be absorbed into the second injection chamber 2114 from the second injection port 2112. When the diaphragm 212 deforms and compresses the second injection chamber 2114, the first injection chamber 2113 expands accordingly, allowing gas or liquid within the second injection chamber 2114 to be ejected from the second injection port 2112, and external gas or liquid to be absorbed into the first injection chamber 2113 from the first injection port 2111. As the diaphragm 212 vibrates back and forth within the housing 211, the first injection port 2111 and the second injection port 2112 can alternately eject or absorb fluid, thereby enabling the actuator 21 to eject or absorb a synthetic fluid with a phase difference.

[0042] In this embodiment of the application, the first injection port 2111 and the second injection port 2112 can alternately inject or absorb fluid, so that the actuator 21 can inject or absorb synthetic fluid with a phase difference, thereby enriching the types of fluids injected or absorbed by the actuator 21.

[0043] In one embodiment, please refer to Figure 4 The actuator 21 also includes a slider 213, which is configured to open or close the first injection port 2111 and the second injection port 2112.

[0044] For example, when only the actuator 21 needs to spray or absorb a single stream of fluid, the first spray port 2111 or the second spray port 2112 can be closed by the slider 213. When the actuator 21 needs to spray or absorb a synthesized fluid, the first spray port 2111 and the second spray port 2112 can be opened by the slider 213.

[0045] In this embodiment, the opening and closing of the first injection port 2111 and the second injection port 2112 can be controlled by the slider 213, which makes it convenient for the operator to flexibly select the type of fluid injected or absorbed by the exciter 21 according to the characteristics of the fluid flowing around the plate 1, so that the jet assembly 2 can more accurately and actively control the fluid flowing around the plate 1.

[0046] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. An array-type jet control flat plate flow separation device, characterized in that, include: A flat plate having jet holes, wherein the number of jet holes is at least two; A jet assembly includes an actuator, the number of which is at least two, the at least two actuators being respectively disposed in at least two jet orifices, the actuators being capable of jetting or absorbing fluid; A control component includes a monitoring module and an adjustment module. The monitoring module is configured to monitor the fluid on the surface of the flat plate. The monitoring module is electrically connected to the adjustment module, which is electrically connected to the jet assembly, so that the adjustment module can adjust the fluid ejected or absorbed by the actuator according to the monitoring module. Each of the exciters is independent of the others, so that each of the exciters can be independently controlled by the adjustment module.

2. The array-type jet control flat plate flow separation device according to claim 1, characterized in that, The jet assembly further includes a power source electrically connected to the adjustment module. The power source is configured to drive the actuators to eject or absorb fluid. There is one power source, and the adjustment module can control the power source so that one power source can drive one or at least two of the actuators; or... The number of power sources corresponds one-to-one with the number of actuators, and each power source is independent of the others, so that multiple power sources can drive their respective actuators.

3. The array-type jet control flat plate flow separation device according to claim 1, characterized in that, The jet holes are configured in an array, and the number of exciters corresponds one-to-one with the number of jet holes.

4. The array-type jet control flat plate flow separation device according to any one of claims 1 to 3, characterized in that, The adjustment module includes a processing unit electrically connected to the jet assembly, enabling the adjustment module to adjust the fluid ejected or absorbed by the actuator according to the monitoring module.

5. The array-type jet control flat plate flow separation device according to any one of claims 1 to 3, characterized in that, The exciter includes a housing and a vibrating diaphragm. The vibrating diaphragm is disposed inside the housing. The housing and the vibrating diaphragm enclose a first injection chamber. The housing has a first injection port, which communicates with the first injection chamber. When the vibrating diaphragm vibrates inside the housing, the first injection port can inject or absorb fluid.

6. The array-type jet control flat plate flow separation device according to claim 5, characterized in that, The outer shell and the vibrating diaphragm can also enclose a second injection chamber. The outer shell has a second injection port, which is connected to the second injection chamber. When the vibrating diaphragm vibrates inside the outer shell, the first injection port and the second injection port can alternately inject or absorb fluid.

7. The array-type jet control flat plate flow separation device according to claim 6, characterized in that, The actuator also includes a slider configured to open or close the first injection port and / or the second injection port.

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