Time domain numerical simulation method for quickly determining micro-discharge threshold of component

A numerical simulation and micro-discharge technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the development cycle cannot obtain the maximum working power reliability design, etc., to improve practicability and ease of use, The effect of reduced forecasting time, shortened time

Active Publication Date: 2019-11-05
XIAN INSTITUE OF SPACE RADIO TECH
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Problems solved by technology

For the micro-discharge design of high-power microwave components, effective numerical simulation and threshold analysis are the key steps for ground verification, which can

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  • Time domain numerical simulation method for quickly determining micro-discharge threshold of component
  • Time domain numerical simulation method for quickly determining micro-discharge threshold of component
  • Time domain numerical simulation method for quickly determining micro-discharge threshold of component

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the embodiments disclosed in the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 , in this embodiment, the time-domain numerical simulation method for quickly determining the microdischarge threshold of a component includes:

[0035] Step 101, establishing a three-dimensional geometric model describing the minimum size structure of the component, and dividing the three-dimensional geometric model into a plurality of hexahedral grids.

[0036] In this embodiment, according to the working center frequency f of the three-dimensional geometric model 0 and the geometric characteristics of the electromagnetic wave input port of the three-dimensional geometric model, by solving Maxwell's equations, a time period T 0 Electric field distribution E in all hexahedral meshes in the inner 3D geometry m...

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Abstract

The invention discloses a time domain numerical simulation method for quickly determining a micro discharge threshold of a component, which comprises the following steps of: establishing a three-dimensional geometric model for describing the minimum size structure of the component, and dividing the three-dimensional geometric model into a plurality of hexahedral grids; determining boundaries and material attributes of the three-dimensional geometric model and secondary electron emission characteristic parameters of the material; adopting free electrons in a macro particle simulation space to define the initial energy, the charge quantity, the mass, the initial distribution state and the initial motion direction of macro particles; establishing a macro particle linked list, and initializingthe macro particle linked list; and based on the three-dimensional geometric model, the boundary and material attributes of the three-dimensional geometric model, the secondary electron emission characteristic parameters of the material and the macro-particle linked list, performing micro-discharge threshold numerical simulation from the micro-discharge threshold scanning power initial value P0.According to the invention, the simulation efficiency of micro-discharge numerical simulation is improved.

Description

technical field [0001] The invention belongs to the technical field of space-borne microwave components, in particular to a time-domain numerical simulation method for quickly determining the micro-discharge threshold of a component. Background technique [0002] The high microdischarge risk of high-power microwave components of spacecraft is a key factor affecting the long life and high reliability of spacecraft payloads, and it is also the largest single-point failure link of satellites under high-power applications. For the micro-discharge design of high-power microwave components, effective numerical simulation and threshold analysis are the key steps for ground verification, which can avoid the long development period caused by experiments and repeated design changes, and even the failure to obtain the maximum operating power. The problem of sexual design. [0003] The three-dimensional numerical simulation technology of micro-discharge based on full-wave electromagnet...

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Application Information

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IPC IPC(8): G06F17/50
CPCY02E60/00
Inventor 李韵崔万照王琪王新波张剑锋王洪广
Owner XIAN INSTITUE OF SPACE RADIO TECH
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