Simulation method and simulation system for antenna-shock tube-antenna plasma electromagnetic characteristics

Abstract

The invention discloses an antenna-shock tube-antenna plasma electromagnetic characteristic simulation method and system. The method comprises: determining dimensions of a shove tube experimental apparatus, electromagnetic parameters of a material used, structure, and experimental conditions; determining the size and structure of a simulation area; determining electromagnetic parameters of the material, and building a three-dimensional electromagnetic simulation model of the simulation area in a program; performing simulating according to the experimental conditions to obtain flow field distribution in a shock tube experimental segment; coupling simulation data of a flow field to meshes of the three-dimensional electromagnetic simulation model to obtain flow field data on the full-space electromagnetic meshes; coupling flow field mesh parameters to electromagnetic mesh parameters; filling the three-dimensional electromagnetic simulation model with the flow field electromagnetic parameters, and running the simulation program to obtain simulation results. A real simulation process is simulated via the program, flow field simulation and electromagnetic simulation are combined, and therefore, plasma interaction of electromagnetic wave with plasma in a shock tube is more truly simulated.

Description

technical field [0001] The invention belongs to the field of electromagnetic technology, and relates to a simulation method and simulation system for antenna-shock tube-antenna plasma electromagnetic characteristics, which are used to study the interaction between electromagnetic waves and plasma, and can be used to simulate the interaction between electromagnetic waves and plasma. The influence of uniform plasma on the transmission characteristics of electromagnetic waves, the experimental process of simulating the interaction between electromagnetic waves and plasma in shock tubes, etc. Background technique [0002] The shock tube is an important experimental research tool in many modern scientific and technological fields. It is widely used in gas physics, chemical dynamics, hypersonic gas dynamics, electromagnetic hydrodynamics and other fields. It is an important experimental device for experimentally studying the interaction between electromagnetic waves and plasma. ...

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Problems solved by technology

It has a simple method of obtaining high-temperature airflow, a stable state, and a fairly clean hot airflow; as long as the initial conditions and the accurate measurement of the shock wave velocity are used, the rest of the flow parameters can be reliably obtained; the main disadvantage is the duration of the test. very short

[0004] At present, the shock tube is one of the mainstream devices in the study of the transmission characteristics of electromagnetic waves in plasma. The simulation of this process generally uses a one-dimensional transmission model. This model has the advantages of simplicity and speed. However, in the actual shock tube test Among them, the plasma flow field is non-uniform, and the electromagnetic wave will reflect on the wall of the shock tube, and there will be refraction and scattering in the plasma. The one-dimensional model cannot simulate these factors, and there is an urgent need for a more Simulation system close to the real situation

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