A method, system and apparatus for simulating microstructure evolution of zirconium-niobium alloys under irradiation

Abstract

The application discloses a kind of zirconium niobium alloy microstructure evolution simulation method, system and equipment under irradiation.The method comprises the following steps: establishing the microstructure model of zirconium niobium alloy using phase field method, introducing the rate theory model of irradiation defect evolution, obtaining the microstructure evolution model of zirconium niobium alloy under irradiation;The microstructure evolution and irradiation defect distribution of zirconium niobium alloy under different irradiation conditions are simulated using the microstructure evolution model of zirconium niobium alloy under irradiation.The microstructure model of zirconium niobium alloy is established using phase field method, and the rate theory model of irradiation defect evolution is introduced, to obtain the microstructure evolution model of zirconium niobium alloy under irradiation, using the model can realize the computer model of irradiation defect and microstructure evolution in zirconium niobium alloy under neutron irradiation, can quickly and accurately obtain the influence of irradiation condition and alloy composition on zirconium alloy, greatly reduces the test cost and test time, and the test personnel does not need to contact radioactive substance, guarantees personal safety.

Description

Technical Field

[0001] This invention belongs to the field of zirconium alloy irradiation testing technology, specifically relating to a method, system, and equipment for simulating the microstructure evolution of zirconium-niobium alloys under irradiation. Background Technology

[0002] Fuel cladding is one of the most important reactor structures, serving as a crucial safety barrier. It encases the fuel pellets, contains fission products, and prevents the fuel from reacting with the coolant. Currently, zirconium alloys are used for pressurized water reactor cladding due to their small thermal neutron absorption cross-section and excellent resistance to high-temperature water corrosion and superior mechanical properties. Zr-4 alloy, belonging to the Zr-Sn alloy series, is currently the most widely used in commercial pressurized water reactors. To further improve the corrosion resistance of zirconium alloys, Canada, Russia, the United States, France, and other countries have successively developed Zr-Nb alloys.

[0003] To study the composition and processing of zirconium alloys with superior performance and to obtain the microstructural evolution process of zirconium alloys under neutron irradiation conditions, researchers have focused on reactor testing and microscopic characterization in hot chambers for zirconium-clad reactors.

[0004] Currently, both domestically and internationally, simulations of nuclear power plant operation are typically conducted in research reactors with high flux. By utilizing their high neutron flux, the safety and reliability of the reactor during operation can be tested in a relatively short time. However, high flux irradiation resources are limited, and the testing costs are enormous. Furthermore, post-irradiation testing is usually accompanied by radioactivity, which can cause certain harm to the test personnel. Summary of the Invention

[0005] To address the problems of high experimental costs and safety risks associated with existing reactor neutron irradiation and microstructure characterization techniques, this invention provides a method, system, and equipment for simulating the microstructure evolution of zirconium-niobium alloys under irradiation. This invention employs the phase-field method to establish a microstructure model of the zirconium-niobium alloy and introduces a rate theory model of irradiation defect evolution to obtain a microstructure evolution model of the zirconium-niobium alloy under irradiation. Using this microstructure evolution model, the microstructure evolution and irradiation defect distribution of the zirconium-niobium alloy under different irradiation conditions can be obtained. Compared with existing reactor neutron irradiation and microstructure characterization techniques, this invention significantly reduces experimental costs and time, while eliminating the need for personnel to come into contact with radioactive materials, thus ensuring experimental safety.

[0006] This invention is achieved through the following technical solution:

[0007] A method for simulating the microstructure evolution of zirconium-niobium alloys under irradiation, the method comprising:

[0008] A microstructure model of zirconium-niobium alloy was established using the phase-field method. At the same time, a rate theory model of irradiation defect evolution was introduced to obtain a microstructure evolution model of zirconium-niobium alloy under irradiation.

[0009] The microstructure evolution of zirconium-niobium alloys under irradiation was simulated using a microstructure evolution model to obtain the microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions.

[0010] Existing reactor neutron irradiation and microstructure characterization techniques are costly and inefficient, and post-irradiation inspections often involve radioactivity, which can harm personnel. This invention proposes a numerical simulation method for the microstructure evolution of zirconium-niobium alloys under irradiation. It utilizes the phase-field method to establish a microstructure model of the zirconium-niobium alloy and introduces a rate theory model of irradiation defect evolution to obtain a microstructure evolution model of the zirconium-niobium alloy under irradiation. This model can be used to create a computer model of irradiation defects and microstructure evolution in zirconium-niobium alloys under neutron irradiation, enabling rapid and accurate determination of the effects of irradiation conditions and alloy composition on zirconium alloys. It eliminates the need for large amounts of irradiation resources, significantly reducing experimental costs and time. Furthermore, it eliminates the need for personnel to come into contact with radioactive materials, ensuring personal safety.

[0011] Furthermore, the method proposed in this invention can provide more accurate and reliable initial models and input parameters for subsequent numerical simulation calculations of other properties of zirconium-niobium alloys, and provide more accurate and reliable technical and data support for irradiation testing and performance research of zirconium alloys.

[0012] As a preferred embodiment, the microstructure evolution model of the zirconium-niobium alloy under irradiation according to the present invention is specifically as follows:

[0013]

[0014] in, Indicates the zirconium concentration. The kinetic coefficients representing zirconium atoms. For Gibbs energy, Indicates the atomic migration frequency, This represents the average concentration of zirconium. The Gaussian thermal noise of zirconium. This indicates the occurrence rate of point defects. Indicates the clustering ratio of interstitial atoms. Indicates the interstitial atom diffusion rate. The mean free path of the vacant space. This indicates a lack of trap strength. Indicates the recombination rate of point defects. Indicates vacancy concentration. Indicates the equilibrium vacancy concentration. Indicates the clustering ratio of vacant sites. This represents the diffusion rate of vacancies. The Gaussian thermal noise representing the vacancy. The dynamic coefficient representing the vacancy. This represents the square of the volume of an atom's expansion. This represents the average squared distance between the defect and the matrix atoms. Indicates the irradiation dose rate; Indicates the sequence parameter of the second phase. For the kinetic coefficients of the second phase, This represents the Gaussian thermal noise of the second phase; Indicates the density of the gap ring. Indicates the vacancy ring density. This indicates the average size of the gap ring. This indicates the average size of the vacancy ring. Represents the magnitude of the Burgers vector. Represents Poisson's ratio. This represents the product of bulk modulus and atomic volume. In a preferred embodiment, the present invention assumes a constant interstitial atom concentration during the construction of the microstructure evolution model.

[0015] In a preferred embodiment of the present invention, under in-pile neutron irradiation, non-equilibrium point defects are generated in the zirconium-niobium alloy. These point defects are mobile and can recombine and diffuse into defect traps.

[0016] In a preferred embodiment, the defects in the zirconium-niobium alloy system of the present invention are represented by rate theory equations.

[0017] In a preferred embodiment, the method of the present invention further includes:

[0018] The microstructure evolution model and the simulated microstructure evolution and irradiation defect distribution of zirconium-niobium alloy under different irradiation conditions are output, providing initial models and input parameters for numerical simulation calculations of other properties of zirconium-niobium alloy.

[0019] Secondly, this invention proposes a microstructure evolution simulation system for zirconium-niobium alloys under irradiation, the system comprising:

[0020] The model building unit uses the phase field method to establish a microstructure model of zirconium-niobium alloy, and introduces a rate theory model of irradiation defect evolution to obtain a microstructure evolution model of zirconium-niobium alloy under irradiation.

[0021] The system also includes a numerical simulation unit, which uses a microstructure evolution model of zirconium-niobium alloys under irradiation to simulate the microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions.

[0022] In a preferred embodiment, the system of the present invention further includes:

[0023] The output unit outputs a microstructure evolution model and simulated microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions, providing initial models and input parameters for other numerical simulation systems of zirconium-niobium alloys.

[0024] Thirdly, the present invention provides an electronic device including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the method described in the present invention.

[0025] Fourthly, the present invention provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in the present invention.

[0026] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0027] 1. This invention uses the phase-field method to establish a microstructure model of zirconium-niobium alloy and introduces a theoretical model of the rate of irradiation defect evolution, thereby obtaining a microstructure evolution model of zirconium-niobium alloy under irradiation. Using this microstructure evolution model, the structural evolution and irradiation defect distribution of zirconium-niobium alloy under different irradiation conditions can be simulated quickly and accurately. Compared with existing reactor neutron irradiation and microstructure characterization techniques, it can significantly reduce experimental time and cost, and does not require experimental personnel to come into contact with radioactive materials, thus ensuring the personal safety of experimental personnel.

[0028] 2. This invention can also provide more accurate and reliable initial models and input parameters for numerical simulation calculations of the mechanical properties of zirconium-niobium alloys in the later stages, which is of great significance to the performance research of zirconium-niobium alloys. Attached Figure Description

[0029] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0030] Figure 1 This is a schematic diagram of the method flow according to an embodiment of the present invention.

[0031] Figure 2 This is a system principle block diagram according to an embodiment of the present invention.

[0032] Figure 3 The diagram shows the results of simulating the microstructure evolution and irradiation vacancy distribution of a zirconium-niobium alloy under a certain irradiation condition using the method of this embodiment of the invention. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of the present invention are only used to explain the present invention and are not intended to limit the present invention.

[0034] Example 1

[0035] Existing reactor neutron irradiation and microscopic characterization techniques are resource-intensive, time-consuming, costly, and inefficient. Furthermore, post-irradiation testing often involves radioactivity, which can harm personnel. To address this, this invention presents a method for simulating the microstructural evolution of zirconium-niobium alloys under irradiation. With the rapid development of computer hardware, software, and computational materials science, numerical simulation techniques for nuclear materials have emerged. Employing multi-scale numerical simulation methods, this approach can simulate the irradiation effects of materials at nanoscale, microscale, mesoscale, and macroscale. The phase-field method, a commonly used mesoscale simulation method based on Ginzburg-Landau theory, uses differential equations to represent the combined effects of diffusion, ordering potential, and thermodynamic driving forces with specific physical mechanisms. Compared to other multi-scale simulation methods, this method offers several advantages, considering long-range interactions such as elastic fields, ensuring that all spatial information of the microstructure is contained within the field. Based on this, the method proposed in this embodiment uses the phase-field method to establish a microstructure model of zirconium-niobium alloy, and introduces a theoretical model of the rate evolution of irradiation defects to obtain a microstructure evolution model of zirconium-niobium alloy under irradiation. Using this model, computer simulation of the evolution of irradiation defects and microstructure in zirconium-niobium alloy under neutron irradiation can be realized, and the influence of irradiation conditions and alloy composition on zirconium alloy can be obtained. Compared with existing reactor neutron irradiation and microstructure characterization techniques, it can significantly reduce experimental time and cost, and does not require experimental personnel to come into contact with radioactive materials, thus ensuring the personal safety of experimental personnel.

[0036] like Figure 1 As shown, the method proposed in this embodiment specifically includes the following steps:

[0037] Step 1: The microstructure model of zirconium-niobium alloy is established using the phase-field method. At the same time, the theoretical model of the rate evolution of irradiation defects is introduced to obtain the microstructure evolution model of zirconium-niobium alloy under irradiation.

[0038] Step 2: Using the microstructure evolution model described above, the microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions can be simulated.

[0039] The method proposed in this embodiment can also provide a more accurate initial model and input parameters for the numerical simulation calculation of the mechanical properties of zirconium-niobium alloys in the later stage, and provide technical and data support for the numerical simulation calculation of the mechanical properties of zirconium-niobium alloys.

[0040] Furthermore, under in-reactor neutron irradiation, a large number of non-equilibrium point defects (vacancies and interstitial atoms) are generated in the zirconium-niobium alloy. These point defects are mobile and can recombine, diffuse into defect traps (vacancy rings, interstitial rings), and so on. The defects in the zirconium-niobium alloy system are described by rate theory formulas.

[0041] In zirconium-niobium alloy systems, the interstitial atom concentrations of zirconium and niobium... Represented as:

[0042]

[0043] in, This indicates the generation rate of point defects (interstitial atoms, vacancies). Indicates the clustering ratio of interstitial atoms. Indicates the ratio of zirconium atoms to niobium atoms. Indicates the interstitial atom diffusion rate. The mean free path of the vacant space. Indicates the normalized absence of trap strength. Indicates the recombination rate of point defects. Indicates vacancy concentration. Indicates the equilibrium vacancy concentration. This represents the interstitial atomic flux of zirconium and niobium.

[0044] Vacancy concentration The evolution equation over time is:

[0045]

[0046] in, Indicates the clustering ratio of vacant sites. This represents the diffusion rate of vacancies. This indicates the interstitial atom concentration of zirconium. This indicates the interstitial atom concentration of niobium. This represents the flux of vacant spaces.

[0047] The concentrations of zirconium and niobium atoms are:

[0048]

[0049] in, This indicates the flux of zirconium and niobium atoms.

[0050] The evolution of the density of gap loops and vacancy loops over time can be given by the average size of the loops and the number density of the loops, as shown in the following equation:

[0051]

[0052] in, Indicates the density of the gap ring. Indicates the vacancy ring density. This indicates the average size of the gap ring. This indicates the average size of the vacancy ring. Represents the magnitude of the Burgers vector. This indicates the concentration of vacancies absorbed by the interstitial ring.

[0053] In zirconium alloys, the diffusivity of interstitial atoms is much greater than that of vacancies, and the vacancy lifetime is much greater than that of interstitial atoms. Therefore, the concentration of interstitial atoms can be assumed to be constant in the model. This is based on the principle of mass conservation in zirconium-niobium alloy systems. The interstitial atom concentration can be obtained as:

[0054]

[0055] in, This indicates the interstitial atom concentration of zirconium. This indicates the interstitial atom concentration of niobium. This indicates a lack of trap strength.

[0056] The potential energy of the elastic interaction between the defects is:

[0057]

[0058] in, This represents the elastic interaction potential energy of the defect. This represents the potential energy of the interaction between defects. This represents the interaction potential energy between the defect and the matrix atoms.

[0059] The potential energy of the interaction between defects is:

[0060]

[0061] in, Represents Poisson's ratio. It represents the product of bulk modulus and atomic volume. Indicates the volume of expansion. Indicates the concentration of defects.

[0062] The interaction potential energy between the defect and the matrix atoms is:

[0063]

[0064] in, For the elastic modulus operator, Indicates the distance between the defect and the matrix atoms. It represents the change in volume.

[0065] Suppose that the force acting on the defect causes the defect to move at a velocity... Motion, of which speed Represented as:

[0066]

[0067] in, Indicates the diffusion rate of the defect. Indicates temperature.

[0068] At this point, the zirconium-niobium alloy system is a defective elastic continuum with a free energy density of for:

[0069]

[0070] in, Indicates volume modulus. , Represents the deformation tensor.

[0071] Since defects can cause deformation of the material medium, the displacement vector can be calculated by solving the equations as follows:

[0072]

[0073] Where ρ represents the material density, This represents the stress tensor.

[0074] The stress tensor is:

[0075] Substituting the stress tensor into the dynamic equation of the displacement mass, we get:

[0076]

[0077] in, It is the longitudinal speed of sound. It is the transverse speed of sound.

[0078] The relationship between deformation and defect concentration is as follows:

[0079]

[0080] Therefore, the elastic flux of the defect is:

[0081]

[0082] In summary, the phase field and rate theory kinetic model (i.e., the microstructure evolution model) for simulating the microstructure evolution of zirconium-niobium alloys can be obtained as follows:

[0083]

[0084] in, Indicates the zirconium concentration. The kinetic coefficients representing zirconium atoms. For Gibbs energy, Indicates the atomic migration frequency, This represents the average concentration of zirconium. The Gaussian thermal noise of zirconium. The Gaussian thermal noise representing the vacancy. The dynamic coefficient representing the vacancy. This represents the square of the volume of an atom's expansion. This represents the average squared distance between the defect and the matrix atoms. Indicates the irradiation dose rate; Indicates the sequence parameter of the second phase. For the kinetic coefficients of the second phase, This represents the Gaussian thermal noise of the second phase. Based on the same technical concept described above, this embodiment also proposes a microstructure evolution simulation system for zirconium-niobium alloys under irradiation, such as... Figure 2 As shown, the system specifically includes:

[0085] The model building unit uses the phase-field method to establish a microstructure model of zirconium-niobium alloy, and introduces a rate theory model of irradiation defect evolution to obtain a microstructure evolution model of zirconium-niobium alloy under irradiation.

[0086] The numerical simulation unit uses the microstructure evolution model constructed by the model building unit to simulate the microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions.

[0087] Furthermore, the system in this embodiment also includes:

[0088] The output unit is used to output the microstructure evolution model and the microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions, providing more accurate and reliable initial models and input parameters for other systems, such as numerical simulation calculation systems for the mechanical properties of zirconium-niobium alloys.

[0089] Example 2

[0090] This embodiment uses the simulation technology proposed in Embodiment 1 to simulate the microstructure evolution and irradiation defect distribution of a zirconium-niobium alloy under certain irradiation conditions.

[0091] The zirconium-niobium alloy contains 10% niobium, is irradiated at a temperature of 550 K, and has an irradiation dose rate of 10. -6 dpa / s. Using the simulation technology proposed in the above embodiments, the microstructure evolution and irradiation vacancy distribution of zirconium-niobium alloys under the above irradiation conditions were simulated, and the results are as follows: Figure 3 As shown.

[0092] Depend on Figure 3As can be seen, the simulation method proposed in this embodiment of the invention can simulate the microstructure evolution and irradiation vacancy distribution of zirconium-niobium alloys under irradiation, verifying the feasibility of the simulation technology proposed in this embodiment of the invention. This technology does not require a large amount of resources, reducing costs, and only requires changing the irradiation conditions and related parameters to simulate the microstructure evolution and irradiation vacancy distribution of zirconium-niobium alloys under different irradiations. It is fast and convenient, and at the same time, it does not require experimental personnel to come into contact with radioactive materials, improving the safety of the experiment.

[0093] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0094] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0095] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0096] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0097] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for simulating the microstructure evolution of zirconium-niobium alloys under irradiation, characterized in that, The method includes: A microstructure model of zirconium-niobium alloy was established using the phase-field method. At the same time, a rate theory model of irradiation defect evolution was introduced to obtain a microstructure evolution model of zirconium-niobium alloy under irradiation. The microstructure evolution of zirconium-niobium alloys under irradiation was simulated using a model to obtain the microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions. The specific microstructure evolution model of zirconium-niobium alloys under irradiation is as follows: ； ； ； ； in, Indicates the zirconium concentration. The kinetic coefficients representing zirconium atoms. For Gibbs energy, Indicates the atomic migration frequency, This represents the average concentration of zirconium. The Gaussian thermal noise of zirconium. This indicates the occurrence rate of point defects. Indicates the clustering ratio of interstitial atoms. Indicates the interstitial atom diffusion rate. The mean free path of the vacant space. This indicates a lack of trap strength. Indicates the recombination rate of point defects. Indicates vacancy concentration. This indicates the concentration of vacancies absorbed by the interstitial ring. Indicates the equilibrium vacancy concentration. Indicates the clustering ratio of vacant sites. This represents the diffusion rate of vacancies. The Gaussian thermal noise representing the vacancy. The dynamic coefficient representing the vacancy. This represents the square of the volume of an atom's expansion. This represents the average squared distance between the defect and the matrix atoms. Indicates the irradiation dose rate; Indicates the sequence parameter of the second phase. For the kinetic coefficients of the second phase, This represents the Gaussian thermal noise of the second phase; Indicates the density of the gap ring. Indicates the vacancy ring density. This indicates the average size of the gap ring. This indicates the average size of the vacancy ring. Represents the magnitude of the Burgers vector. Represents Poisson's ratio. It represents the product of bulk modulus and atomic volume.

2. The method for simulating the microstructure evolution of zirconium-niobium alloys under irradiation according to claim 1, characterized in that, In the process of constructing the microstructure evolution model, it is assumed that the concentration of interstitial atoms remains constant.

3. The method for simulating the microstructure evolution of zirconium-niobium alloys under irradiation according to claim 1, characterized in that, Under in-reactor neutron irradiation, non-equilibrium point defects will be generated in zirconium-niobium alloys. These point defects are mobile and can recombine and diffuse into defect traps.

4. The method for simulating the microstructure evolution of zirconium-niobium alloy under irradiation according to claim 3, characterized in that, Defects in zirconium-niobium alloy systems are represented by rate theory equations.

5. The method for simulating the microstructure evolution of zirconium-niobium alloys under irradiation according to claim 1, characterized in that, The method further includes: The microstructure evolution model and the simulated microstructure evolution and irradiation defect distribution of zirconium-niobium alloy under different irradiation conditions are output, providing initial models and input parameters for numerical simulation calculations of other properties of zirconium-niobium alloy.

6. A simulation system for the microstructure evolution of zirconium-niobium alloys under irradiation, characterized in that, The system is used to implement the microstructure evolution simulation method for zirconium-niobium alloys under irradiation according to any one of claims 1-5, the system comprising: The model building unit uses the phase field method to establish a microstructure model of zirconium-niobium alloy, and introduces a rate theory model of irradiation defect evolution to obtain a microstructure evolution model of zirconium-niobium alloy under irradiation. The system also includes a numerical simulation unit, which uses a microstructure evolution model of zirconium-niobium alloys under irradiation to simulate the microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions.

7. The microstructure evolution simulation system for zirconium-niobium alloy under irradiation according to claim 6, characterized in that, The system also includes: The output unit outputs a microstructure evolution model and simulated microstructure evolution and irradiation defect distribution of zirconium-niobium alloys under different irradiation conditions, providing initial models and input parameters for other numerical simulation systems of zirconium-niobium alloys.

8. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1-5.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1-5.

Images