To control the deflection of the gas plasma jet,a new analytical method is proposed based on the Magnetohydrodynamic(MHD)technique.Based on the typical MHD power gener-ation model,the applied voltage is applied to the staggered electrodes,that is,a pair of electrodes on the same side wall are connected to generate an axial current in the channel.Under the action of the magnetic field perpendicular to the direction of the flow,the plasma is subjected to electromagnetic forces perpendicular to these two directions,and the jet is deflected.The computational model including the Navier-Stokes equations coupled with electromagnetic source terms,the electric potential equation and Ohm's law is solved.The deflection of the gas jet under the action of an elec-tromagnetic field is observed,and the maximum deflection angle is about 14.8°.The influences of the electric field,magnetic field,and conductivity on the jet deflection are studied.Results show that although the influences of these three factors on the deflection are similar,and the effect of increas-ing the electric field strength is slightly greater,priority should be given to increasing the magnetic field strength from the perspective of reducing energy consumption.The Stuart number is intro-duced to assess the ability of electromagnetic force to control jet deflection.When the electromag-netic parameters are constant,this solution provides better control of low-density and low-speed fluid flows.The calculation results show that using the staggered electrode method configuration is feasible in terms of controlling the deflection of a plasma jet deflection.

Jingjia ZHANG;Junwei LI;Zelin ZHANG;Zhijun WEI

School of Aerospace,Beijing Institute of Technology,Beijing 100081,China

中国航空学报（英文版）

[1]Jingjia ZHANG;Junwei LI;Zelin ZHANG;Zhijun WEI-.Numerical analysis of deflection control of a gas plasma jet based on magnetohydrodynamic staggered electrode configuration)[J].中国航空学报（英文版）,2022(12):47-58

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