临近空间地面模拟装置等离子体源仿真研究

In order to guide the design of plasma source structure and the optimization of plasma environmental parameters in the laboratory simulation of near-space environment, the interaction between plasma jet and the downstream target simulator in the ground simulation device is analyzed by numerical simulation method based on the requirements of relevant indicator system. By studying the dependence of the plasma state at the jet inlet and the downstream plasma on the coating effect of the blunt body, the key plasma parameters and important external control parameters that affect the coating characteristics of the blunt body and their influence on the coating characteristics of the downstream target simulator are clarified. The simulation results show that the radius of the jet inlet, the gas flow rate, the velocity declination, the gas temperature, the bluff body diameter, and the environmental back pressure have a greater influence on the length and thickness parameters of the experimental effective zone, especially compared with the other three factors. The results have guidance and reference significance for the optimization design of plasma source and the orientation control of plasma environment parameters of the laboratory simulation of near-space environment.