Surface electromagnetic actuator in rarefied hypersonic flow

[摘要] Hypersonic flow past the surface with sharp edge is investigated. This surface forms an obtuse angle therefore the shock wave generated by the leading edge interacts with the surface. The effect of influence of the surface direct current discharge and a transverse magnetic field on the gas dynamic characteristics is investigated. To solve this problem a numerical simulation is used. The calculation model includes the set of the Navier - Stokes and energy conservation equations, as well as equations of electrodynamics in the ambipolar approximation, and the Poisson equation. Results of numerical modelling the gas dynamics and electrodynamics of gas discharge with magnetic field show the change in the structure of the shock-wave interaction with surface far from location of the gas discharge. It is shown that the low-current glow discharge can be used as an electromagnetic actuator in hypersonic flows.

[发布机构] A. Ishlinsky Institute for Problems in Mechanics, Russian Academy of Sciences, Vernadsky prospekt 101(1), Moscow; 119526, Russia^1;Dukhov All-Russian Scientific Research Institute of Automatics, Moscow, Russia^2

[效力级别] 力学 [学科分类] 力学，机械学

[关键词] Calculation models;Direct-current discharge;Dynamic characteristics;Electromagnetic actuators;Energy conservation equations;Equations of electrodynamics;Shock wave interaction;Transverse magnetic field