Method and device for determining erosion rate of engine material, equipment and medium

Abstract

The invention discloses a method, a device, equipment and a medium for determining the erosion rate of an engine material, and relates to the technical field of engine analysis, the method for determining the erosion rate of the engine material comprises the following steps: determining the radiance of target metal according to a characteristic spectral line of the target metal in an engine plume spectrum; wherein the target metal is a composition of the engine; in combination with the radiation brightness of the target metal and the engine plume data, carrying out atomic number density inversion on the target metal in the engine plume, and determining the atomic number density of the target metal in the engine plume; in combination with the atomic number density and the engine plume data, combustion chemical equilibrium calculation is conducted on the engine plume, and the total concentration of the target metal in the engine plume is determined; and determining the erosion rate of the engine material according to the total concentration of the target metal in the engine plume. The method can quantify the erosion rate of the structural material of the engine during the cycle operation of the engine.

Description

Technical Field

[0001] This invention relates to the field of engine analysis technology, and in particular to a method, apparatus, equipment and medium for determining the erosion rate of engine materials. Background Technology

[0002] Fault detection during engine testing mainly relies on parameters such as temperature, pressure, pump speed, and displacement. These traditional detection methods are very effective in identifying potential catastrophic faults. However, in practical applications, traditional fault detection methods are difficult to quantify the degree of degradation of internal engine components during engine cycle operation, that is, it is difficult to quantify the erosion rate of structural materials during engine cycle operation.

[0003] Therefore, how to quantify the erosion rate of engine structural materials during engine cycle operation has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0004] The purpose of this invention is to provide a method, apparatus, device, and medium for determining the erosion rate of engine materials, so as to quantify the erosion rate of engine structural materials during engine cyclic operation.

[0005] To achieve the above objectives, the present invention provides the following technical solution: A method for determining the erosion rate of an engine material includes: determining the radiance of a target metal based on characteristic spectral lines in an engine plume spectrum; wherein the target metal is a component of the engine; performing atomic number density inversion on the target metal in the engine plume by combining the radiance of the target metal and the engine plume data to determine the atomic number density of the target metal in the engine plume; performing combustion chemical equilibrium calculations on the engine plume by combining the atomic number density and the engine plume data to determine the total concentration of the target metal in the engine plume; and determining the erosion rate of the engine material based on the total concentration of the target metal in the engine plume.

[0006] In one optional embodiment of this application, the method further includes: performing numerical simulation on the engine to determine the engine plume data.

[0007] In one optional embodiment of this application, the step of performing numerical simulation on the engine to determine the engine plume data includes: obtaining a mesh model of the free jet space corresponding to the engine and the plume; and based on the mesh model, using computational fluid dynamics simulation methods based on the engine's operating parameters to determine the simulation temperature, simulation pressure, and line-of-sight path length required for optical measurement of the engine plume.

[0008] In one optional embodiment of this application, the engine plume data includes: the simulated temperature of the engine plume and the line-of-sight path length required for optical measurement; the step of combining the radiance of the target metal and the engine plume data to perform atomic number density inversion on the target metal in the engine plume to determine the atomic number density of the target metal in the engine plume includes: performing inversion calculation on the atomic number density of the target metal in the engine plume based on the radiance of the target metal, the simulated temperature, and the line-of-sight path length to determine the atomic number density of the target metal in the engine plume.

[0009] In one optional embodiment of this application, the atomic number density of the target metal is determined by the following formula: ; ; in, This represents the atomic number density of the target metal; Indicates the center wavelength of the target metal; Indicates the radiance; Represents the statistical weights of excited states; This represents the partition function of atoms at temperature T; The energy level represents the excited state; k represents the Boltzmann constant. The Einstein coefficient represents spontaneous emission; c represents the speed of light; h is Planck's constant. T represents the length of the line-of-sight path; T represents the simulated temperature. This represents the excitation energy of energy level i relative to the ground state; This represents the statistical weight of energy level i.

[0010] In one optional embodiment of this application, the engine plume data further includes: the simulated pressure of the engine plume; the step of combining the atomic number density and the engine plume data to perform combustion chemical equilibrium calculations on the engine plume to determine the total concentration of the target metal in the engine plume includes: performing chemical equilibrium calculations on the combustion of the engine plume based on the engine's fuel, oxidant, simulated pressure, and atomic number density to determine the total concentration of the target metal in the engine plume.

[0011] In one optional embodiment of this application, determining the radiance of the target metal based on the characteristic spectral lines of the target metal in the engine plume spectrum includes: determining the characteristic spectral lines of the target metal from the engine plume spectrum; and performing absolute radiance calibration on the characteristic spectral lines of the target metal to obtain the radiance of the target metal.

[0012] In one optional embodiment of this application, the method further includes: determining the composition of the engine alloy material; and determining the target metal based on the isolation, transition probability, and background interference of the characteristic spectra of each metal material in the composition of the engine alloy material.

[0013] Compared with existing technologies, the method for determining the erosion rate of engine materials provided by this invention determines the radiance of the target metal based on the characteristic spectral lines of the target metal in the engine plume spectrum. Combining the radiance of the target metal with the engine plume data, the atomic number density of the target metal in the engine plume is inverted to determine the atomic number density of the target metal in the engine plume. Then, combining the atomic number density with the engine plume data, combustion chemical equilibrium calculations are performed on the engine plume to determine the total concentration of the target metal in the engine plume. Finally, based on the total concentration of the target metal in the engine plume, the erosion rate of the engine material is determined. This method, combining spectral analysis, engine plume data, and combustion chemical equilibrium calculations of the engine plume, achieves the quantification of the eroded metal material in the engine plume and can determine the erosion rate of the engine material.

[0014] The present invention also provides an apparatus for determining the erosion rate of engine materials, comprising: The radiance determination unit is used to determine the radiance of the target metal from the engine plume spectrum based on the characteristic spectral lines of the target metal; wherein the target metal is a component of the engine.

[0015] An atomic number density determination unit is used to combine the radiance of the target metal and the engine plume data to perform atomic number density inversion on the target metal in the engine plume, and determine the atomic number density of the target metal in the engine plume.

[0016] The concentration determination unit is used to combine the atomic number density and the engine plume data to perform combustion chemical equilibrium calculations on the engine plume and determine the total concentration of the target metal and its oxidation products in the engine plume.

[0017] The erosion rate determination unit is used to determine the erosion rate of the engine material based on the total concentration of the target metal and its oxidation products in the engine plume.

[0018] Compared with the prior art, the beneficial effects of the engine material erosion rate determination device provided by the present invention are the same as those of the engine material erosion rate determination method described in the above technical solutions, and will not be repeated here.

[0019] The present invention also provides an electronic device, comprising: a processor; a memory for storing executable instructions of the processor; the processor being configured to execute a method for determining the erosion rate of engine materials by running the instructions in the memory.

[0020] Compared with the prior art, the beneficial effects of the electronic device provided by the present invention are the same as those of the method for determining the erosion rate of engine materials described in the above technical solution, and will not be repeated here.

[0021] The present invention also provides a computer storage medium storing instructions that, when executed, implement the above-mentioned method for determining the erosion rate of engine materials.

[0022] Compared with the prior art, the beneficial effects of the computer storage medium provided by the present invention are the same as those of the method for determining the erosion rate of engine materials described in the above technical solution, and will not be repeated here. Attached Figure Description

[0023] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this invention, illustrate exemplary embodiments of the invention and are used to explain the invention, but do not constitute an undue limitation of the invention. In the drawings: Figure 1 A flowchart illustrating the method for determining the erosion rate of engine materials provided in this application embodiment.

[0024] Figure 2 This is a schematic diagram of an engine plume spectral measurement system provided in an embodiment of this application.

[0025] Figure 3 A structural diagram of the device for determining engine erosion rate provided in an embodiment of this application.

[0026] Figure 4 This is a schematic diagram of an electronic device structure provided in an embodiment of this application. Detailed Implementation

[0027] To facilitate a clear description of the technical solutions in the embodiments of the present invention, the terms "first" and "second" are used to distinguish identical or similar items with essentially the same function and effect. For example, the first threshold and the second threshold are merely used to distinguish different thresholds and do not limit their order. Those skilled in the art will understand that the terms "first" and "second" do not limit the quantity or execution order, and that the terms "first" and "second" are not necessarily different.

[0028] It should be noted that in this invention, the terms "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in this invention should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0029] In this invention, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, a combination of a and b, a combination of a and c, a combination of b and c, or a, b, and c, where a, b, and c can be single or multiple.

[0030] This application provides a method, apparatus, device, and medium for determining the erosion rate of engine materials, which will be described in detail in the following embodiments.

[0031] This application first provides a method for determining the erosion rate of engine materials. Please refer to... Figure 1 , Figure 1 A flowchart illustrating the method for determining the erosion rate of engine materials provided in this application embodiment.

[0032] like Figure 1 As shown, the method for determining the erosion rate of engine materials includes the following steps S101 to S104: S101, determine the radiance of the target metal based on the characteristic spectral lines of the target metal in the engine plume spectrum; wherein, the target metal is a component of the engine.

[0033] Engine plume spectra can be obtained by setting up a plume spectral measurement system including a high-resolution spectrometer. Please refer to [reference needed]. Figure 2 , Figure 2 This is a schematic diagram of an engine plume spectral measurement system provided in an embodiment of this application.

[0034] like Figure 2The engine plume spectral measurement system includes an optical unit consisting of a collimating mirror, a grating, a focusing mirror, and a detector, and an acquisition unit consisting of a fiber optic probe and a collimating mirror. The acquisition unit is connected to the optical unit via armored optical fiber, and the optical unit is electrically connected to a high-speed data acquisition device, which includes a spectrometer.

[0035] In one optional embodiment of this application, the fiber optic probe can be an optical probe with a field of view diameter of 48cm and a model number of 74-UV, and the high-resolution spectrometer can be a marine optical spectrometer with a model number of HR-6UV, thereby obtaining a spectrum with a resolution higher than 0.2nm and a bandwidth covering 326nm to 430nm.

[0036] In practical applications, the spectral irradiance of the spectral measurement system is first calibrated using a standard light source with a known irradiance distribution, such as using a DH-3P-CAL light source. Then, when the engine is running, the acquisition unit consisting of an optical fiber probe and a collimating lens is aligned with the Mach disk of the plume region to obtain the engine plume spectrum.

[0037] Specifically, S101 includes: determining the characteristic spectral lines of the target metal from the engine plume spectrum; and calibrating the absolute radiance of the characteristic spectral lines of the target metal to obtain the radiance of the target metal.

[0038] When an engine is operating at high temperatures, alloy components such as the combustion chamber and nozzle will release metal atoms due to thermochemical corrosion. These atoms enter the plume and are stimulated to emit radiation, forming characteristic spectral signals. Electron transitions of different metal atoms will emit light of specific wavelengths, which will then be correlated with the amount of corrosion of that metal.

[0039] In practical applications, the selection of target metal is related to the metal composition of the alloy in the engine and the spectral characteristics of the metal elements in the alloy. For example, in an engine using GH4169 high-temperature alloy material, its alloy composition mainly includes iron, nickel, and chromium. When determining the target metal, metals with isolated characteristic spectral lines, low background interference, and high transition probability are selected.

[0040] For example, for an engine using GH4169 high-temperature alloy material, the target metal can be chromium (Cr). After obtaining the engine plume spectrum (bandwidth coverage of 326nm to 430nm) through the engine plume spectral measurement system, the spectral lines at 425.44nm and 427.48nm are determined from the engine plume spectrum, and their absolute radiance is calibrated to obtain the radiance of the target metal.

[0041] S102, Combining the radiance of the target metal and the engine plume data, perform atomic number density inversion on the target metal in the engine plume to determine the atomic number density of the target metal in the engine plume.

[0042] The engine plume data refers to the temperature and pressure of the plume during its generation, as well as the line-of-sight path length of the engine plume spectral measurement system when observing the plume.

[0043] The engine plume data can be obtained by performing plume simulation on the engine. Specifically, the engine plume data is obtained in the following way: obtaining a mesh model of the free jet space corresponding to the engine and the plume; based on the mesh model, and based on the engine's operating parameters, using computational fluid dynamics simulation methods to determine the simulation temperature, simulation pressure, and line-of-sight path length required for optical measurement of the engine plume.

[0044] In one alternative embodiment of this application, a mesh model of the engine thrust chamber and the free jet space of the plume can be established through CFD simulation. Given the total temperature and pressure at the combustion chamber inlet, the simulated temperature, simulated pressure, and line-of-sight path length at the nozzle exit plume measurement point can be calculated using Fluent or OpenFOAM.

[0045] Furthermore, the above-mentioned S102 includes: Based on the radiance of the target metal, the simulated temperature, and the line-of-sight path length, the atomic number density of the target metal in the engine plume is calculated by inversion to determine the atomic number density of the target metal in the engine plume.

[0046] The atomic number density of the target metal is calculated based on a set of radiation equations established by atomic emission spectroscopy theory to describe the concentration of elements in the plume, taking into account the effects of optical thickness and transition probability on radiation intensity.

[0047] For example, the atomic line that transitions from the n-state to the m-state of titanium can be determined by the following formulas (1) and (2): (1); (2); in, This represents the atomic number density of the target metal; Indicates the center wavelength of the target metal; Indicates the radiance; Represents the statistical weights of excited states; This represents the partition function of atoms at temperature T; represents the energy level of the excited state; k represents the Boltzmann constant (k = 1.380649 × 10⁻⁶). -23 J / K); The Einstein coefficient represents spontaneous emission; c represents the speed of light; h is Planck's constant. T represents the length of the line-of-sight path; T represents the simulated temperature. This represents the excitation energy of energy level i relative to the ground state; This represents the statistical weight of energy level i.

[0048] Furthermore, when the target metal is Cr, the excited state energy levels in the atomic transition parameters at different central wavelengths are... Statistical weights of excited states and Einstein coefficient The specific values ​​are shown in Table 1: Table 1: S103, Combining the atomic number density and the engine plume data, perform combustion chemical equilibrium calculations on the engine plume to determine the total concentration of the target metal in the engine plume.

[0049] Considering that the atomic number density of the target metal is obtained by inverting spectral data to obtain the number of free atoms of a specific metal element in a unit volume plume, but it only reflects the free atoms in the plume that are not combined with other elements (e.g., Cr atoms), the target metal may actually exist in the form of compounds (e.g., CrO, CrO2).

[0050] The purpose of S103 is to correct the atomic number density through chemical equilibrium calculations and ultimately obtain the total concentration of metal elements in the plume, including free atoms and their compounds.

[0051] In practical applications, S103 includes: performing chemical equilibrium calculations on the combustion of the engine plume based on the engine's fuel / oxidant, simulated pressure, and simulated temperature to determine the free atom factor of the target metal in the engine plume; and obtaining the total concentration of the target metal in the engine plume based on the free atom factor and atomic number density.

[0052] The chemical element balance calculation can be performed using the CEA (Chemical Equilibrium with Applications) program. The input data for CEA are the engine's fuel / oxidant, simulation temperature, and simulation pressure. The output data is the free atom factor, which represents the proportion of the target metal element present, that is, the proportion of the target metal element in the atomic state in the engine plume.

[0053] For example, in one alternative implementation, the input data for CEA includes RP-1 as the fuel, LOX as the oxidant, and simulation pressure and temperature of 10 atm and 2500 K, respectively, with the output data containing a free atom factor... .

[0054] Furthermore, given the atomic number density and free atom factor of the target metal, the total concentration of the target metal in the engine plume can be obtained by the following formula (3).

[0055] (3); in, The total concentration of the target metal.

[0056] S104, determine the erosion rate of the engine material based on the total concentration of the target metal in the engine plume.

[0057] In determining the erosion rate of engine materials, the erosion rate is based on the correlation between the concentration of target metal elements in the plume and the composition of engine structural materials. The amount of erosion of the material itself is inferred by quantifying the amount of metal element release.

[0058] After obtaining the total concentration of the target metal, the total amount of alloy material that is corroded in the engine can be determined by combining the percentage of the target metal content in the engine's alloy material with the total concentration of the target metal, thereby obtaining the corrosion rate of the engine material.

[0059] For example, assuming that in an engine using GH4169 high-temperature alloy material, the target metal Cr is uniformly distributed in the plume, and the content of the target metal Cr is 17.5%, then the total concentration of eroded metal elements in the plume of the engine using GH4169 high-temperature alloy material can be determined as follows: This leads to the erosion rate of the engine material.

[0060] Compared with existing technologies, the method for determining the erosion rate of engine materials provided in this application embodiment determines the radiance of the target metal based on the characteristic spectral lines of the target metal in the engine plume spectrum, and performs atomic number density inversion on the target metal in the engine plume by combining the radiance of the target metal and the engine plume data to determine the atomic number density of the target metal in the engine plume; combines the atomic number density and the engine plume data to perform combustion chemical equilibrium calculation on the engine plume to determine the total concentration of the target metal in the engine plume; and determines the erosion rate of the engine material based on the total concentration of the target metal in the engine plume. This method combines spectral analysis, engine plume data, and combustion chemical equilibrium calculation of the engine plume to quantify the eroded metal material in the engine plume and can determine the erosion rate of the engine material.

[0061] This application also provides a device for determining engine erosion rate, please refer to... Figure 3 , Figure 3 A structural diagram of the device for determining engine erosion rate provided in an embodiment of this application.

[0062] like Figure 3 As shown, the device for determining the engine erosion rate includes: The radiance determination unit 301 is used to determine the radiance of the target metal from the engine plume spectrum based on the characteristic spectral lines of the target metal; wherein the target metal is a component of the engine.

[0063] The atomic number density determination unit 302 is used to combine the radiance of the target metal and the engine plume data to perform atomic number density inversion on the target metal in the engine plume and determine the atomic number density of the target metal in the engine plume.

[0064] The concentration determination unit 303 is used to combine the atomic number density and the engine plume data to perform combustion chemical equilibrium calculations on the engine plume and determine the total concentration of the target metal and its oxidation products in the engine plume.

[0065] The erosion rate determination unit 304 is used to determine the erosion rate of the engine material based on the total concentration of the target metal and its oxidation products in the engine plume.

[0066] In one optional embodiment of this application, the device is further configured to: perform numerical simulation on the engine to determine the engine plume data.

[0067] In one optional embodiment of this application, the step of performing numerical simulation on the engine to determine the engine plume data includes: obtaining a mesh model of the free jet space corresponding to the engine and the plume; and based on the mesh model, using computational fluid dynamics simulation methods based on the engine's operating parameters to determine the simulation temperature, simulation pressure, and line-of-sight path length required for optical measurement of the engine plume.

[0068] In one optional embodiment of this application, the engine plume data includes: the simulated temperature of the engine plume and the line-of-sight path length required for optical measurement; the step of combining the radiance of the target metal and the engine plume data to perform atomic number density inversion on the target metal in the engine plume to determine the atomic number density of the target metal in the engine plume includes: performing inversion calculation on the atomic number density of the target metal in the engine plume based on the radiance of the target metal, the simulated temperature, and the line-of-sight path length to determine the atomic number density of the target metal in the engine plume.

[0069] In one optional embodiment of this application, the atomic number density of the target metal is determined by the following formula: ; ; in, This represents the atomic number density of the target metal; Indicates the center wavelength of the target metal; Indicates the radiance; Represents the statistical weights of excited states; This represents the partition function of atoms at temperature T; The energy level represents the excited state; k represents the Boltzmann constant. The Einstein coefficient represents spontaneous emission; c represents the speed of light; h is Planck's constant. T represents the length of the line-of-sight path; T represents the simulated temperature. This represents the excitation energy of energy level i relative to the ground state; This represents the statistical weight of energy level i.

[0070] In one optional embodiment of this application, the engine plume data further includes: the simulated pressure of the engine plume; the step of combining the atomic number density and the engine plume data to perform combustion chemical equilibrium calculations on the engine plume to determine the total concentration of the target metal in the engine plume includes: performing chemical equilibrium calculations on the combustion of the engine plume based on the engine's fuel, oxidant, simulated pressure, and atomic number density to determine the total concentration of the target metal in the engine plume.

[0071] In one optional embodiment of this application, determining the radiance of the target metal based on the characteristic spectral lines of the target metal in the engine plume spectrum includes: determining the characteristic spectral lines of the target metal from the engine plume spectrum; and performing absolute radiance calibration on the characteristic spectral lines of the target metal to obtain the radiance of the target metal.

[0072] In one optional embodiment of this application, the device is further configured to: determine the composition of the engine alloy material; and determine the target metal based on the isolation, transition probability, and background interference of the characteristic spectra of each metal material in the composition of the engine alloy material.

[0073] The device embodiment provided in this embodiment and the method embodiment of this application belong to the same application concept. For technical details not described in detail in this embodiment, please refer to the specific processing content of the engine material erosion rate determination method provided in the above embodiment of this application, which will not be repeated here.

[0074] This application also provides an electronic device, such as... Figure 4 As shown, Figure 4 This is a schematic diagram of an electronic device structure provided in an embodiment of this application.

[0075] like Figure 4 As shown, the electronic device includes: Processor 210; Memory 200 for storing executable instructions of the processor 210; The processor 210 is configured to execute the method for determining the erosion rate of engine materials disclosed in any of the above embodiments by running instructions in the memory 200.

[0076] The processor 210, memory 200, communication interface 220, input device 230, and output device 240 are interconnected via a bus. Among them: A bus can include a pathway for transmitting information between various components of a computer system.

[0077] Processor 210 can be a general-purpose processor, such as a general-purpose central processing unit (CPU), a microprocessor, etc., or an application-specific integrated circuit (ASIC), or one or more integrated circuits used to control the execution of the program of the present invention. It can also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), an off-the-shelf programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0078] Processor 210 may include a main processor, as well as a baseband chip, modem, etc.

[0079] The memory 200 stores a program that executes the technical solution of this invention, and may also store an operating system and other key business functions. Specifically, the program may include program code, which includes computer operation instructions. More specifically, the memory 200 may include read-only memory (ROM), other types of static storage devices capable of storing static information and instructions, random access memory (RAM), other types of dynamic storage devices capable of storing information and instructions, disk storage, flash memory, etc.

[0080] Input device 230 may include a device for receiving data and information input by the user, such as a keyboard, mouse, camera, scanner, touch screen, etc.

[0081] Output device 240 may include devices that allow information to be output to a user, such as a display screen, printer, speaker, etc.

[0082] The communication interface 220 may include a device that uses any transceiver to communicate with other devices or communication networks, such as Ethernet, Radio Access Network (RAN), Wireless Local Area Network (WLAN), etc.

[0083] The processor 210 executes the program stored in the memory 200 and calls other devices, and can be used to implement each step of any of the engine material erosion rate determination methods provided in the above embodiments of this application.

[0084] In addition to the methods and apparatus described above, embodiments of this application may also be computer program products, comprising computer program instructions that, when executed by a processor, cause the processor to perform the steps in the methods for determining the erosion rate of engine materials according to various embodiments of this application.

[0085] The computer program product can be written in any combination of one or more programming languages ​​to perform the operations of the embodiments of this application. The programming languages ​​include object-oriented programming languages ​​such as Java and C++, as well as conventional procedural programming languages ​​such as C or similar languages. The program code can be executed entirely on the user's computing device, partially on the user's computing device, as a standalone 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.

[0086] Furthermore, embodiments of this application may also be storage media storing a computer program, which is executed by a processor in the steps of the method for determining the erosion rate of engine materials in various embodiments of this application.

[0087] For the foregoing method embodiments, in order to simplify the description, they are all described as a series of actions. However, those skilled in the art should understand that this application is not limited to the described order of actions, because according to this application, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to this application.

[0088] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For apparatus embodiments, since they are basically similar to method embodiments, the description is relatively simple; relevant parts can be referred to the descriptions in the method embodiments.

[0089] The steps in the methods of the various embodiments of this application can be adjusted, merged, or deleted in order according to actual needs, and the technical features described in each embodiment can be replaced or combined.

[0090] The modules and sub-modules in the apparatus and terminal in the various embodiments of this application can be merged, divided, and deleted according to actual needs.

[0091] It should be understood that the disclosed terminals, devices, and methods can be implemented in other ways, given the several embodiments provided in this application. For example, the terminal embodiments described above are merely illustrative. For instance, the division of modules or sub-modules is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple sub-modules or modules may be combined or integrated into another module, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or modules, and may be electrical, mechanical, or other forms.

[0092] The modules or submodules described as separate components may or may not be physically separate. The components that constitute a module or submodule may or may not be physical modules or submodules; that is, they may be located in one place or distributed across multiple network modules or submodules. Some or all of the modules or submodules can be selected to achieve the purpose of this embodiment's solution, depending on actual needs.

[0093] Furthermore, the functional modules or sub-modules in the various embodiments of this application can be integrated into one processing module, or each module or sub-module can exist physically separately, or two or more modules or sub-modules can be integrated into one module. The integrated modules or sub-modules described above can be implemented in hardware or in the form of software functional modules or sub-modules.

[0094] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0095] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software unit executed by a processor, or a combination of both. The software unit can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0096] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0097] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for determining the erosion rate of engine materials, characterized in that, include: The radiance of the target metal is determined based on the characteristic spectral lines of the target metal in the engine plume spectrum; wherein the target metal is a component of the engine. By combining the radiance of the target metal and the engine plume data, the atomic number density of the target metal in the engine plume is inverted to determine the atomic number density of the target metal in the engine plume. Combustion chemical equilibrium calculations are performed on the engine plume based on the atomic number density and the engine plume data to determine the total concentration of the target metal in the engine plume. The erosion rate of the engine material is determined based on the total concentration of the target metal in the engine plume.

2. The method according to claim 1, characterized in that, Also includes: Numerical simulations were performed on the engine to determine its plume data.

3. The method according to claim 2, characterized in that, The step of performing numerical simulation on the engine to determine the engine plume data includes: Obtain the mesh model of the free jet space corresponding to the engine and plume; Based on the aforementioned mesh model and the engine's operating parameters, computational fluid dynamics simulation methods are used to determine the simulated temperature, simulated pressure, and line-of-sight path length required for optical measurements of the engine plume.

4. The method according to claim 1, characterized in that, The engine plume data includes: the simulated temperature of the engine plume and the line-of-sight path length required for optical measurements; The step of combining the radiance of the target metal and the engine plume data to perform atomic number density inversion on the target metal in the engine plume, and determining the atomic number density of the target metal in the engine plume, includes: Based on the radiance of the target metal, the simulated temperature, and the line-of-sight path length, the atomic number density of the target metal in the engine plume is calculated by inversion to determine the atomic number density of the target metal in the engine plume.

5. The method according to claim 4, characterized in that, The atomic number density of the target metal is determined by the following formula: ； ； in, This represents the atomic number density of the target metal; Indicates the center wavelength of the target metal; Indicates the radiance; Represents the statistical weights of excited states; This represents the partition function of atoms at temperature T; The energy level represents the excited state; k represents the Boltzmann constant. The Einstein coefficient represents spontaneous emission; c represents the speed of light; h is Planck's constant. T represents the length of the line-of-sight path; T represents the simulated temperature. This represents the excitation energy of energy level i relative to the ground state; This represents the statistical weight of energy level i.

6. The method according to claim 1, characterized in that, The engine plume data also includes: the simulated pressure of the engine plume; The step of combining the atomic number density and the engine plume data to perform combustion chemical equilibrium calculations on the engine plume to determine the total concentration of the target metal in the engine plume includes: Based on the engine's fuel, oxidant, simulated pressure, and atomic number density, chemical equilibrium calculations are performed on the engine plume combustion to determine the total concentration of the target metal in the engine plume.

7. The method according to claim 1, characterized in that, Determining the radiance of the target metal based on its characteristic spectral lines in the engine plume spectrum includes: Identify the characteristic spectral lines of the target metal from the engine plume spectrum; The absolute irradiance of the target metal is calibrated by performing absolute irradiance calibration on the characteristic spectral lines of the target metal to obtain the irradiance of the target metal.

8. A device for determining the erosion rate of engine materials, characterized in that, include: The radiance determination unit is used to determine the radiance of the target metal from the engine plume spectrum based on the characteristic spectral lines of the target metal; wherein the target metal is a component of the engine. An atomic number density determination unit is used to combine the radiance of the target metal and the engine plume data to perform atomic number density inversion on the target metal in the engine plume and determine the atomic number density of the target metal in the engine plume. The concentration determination unit is used to combine the atomic number density and the engine plume data to perform combustion chemical equilibrium calculations on the engine plume and determine the total concentration of the target metal and its oxidation products in the engine plume. The erosion rate determination unit is used to determine the erosion rate of the engine material based on the total concentration of the target metal and its oxidation products in the engine plume.

9. An electronic device, characterized in that, include: processor; Memory used to store the processor's executable instructions; The processor is configured to execute the method for determining the erosion rate of engine materials according to any one of claims 1 to 6 by running instructions in the memory.

10. A computer storage medium, characterized in that, The computer storage medium stores instructions that, when executed, enable the processor to perform the method for determining the erosion rate of engine materials as described in any one of claims 1 to 6.

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