MHD控制激波诱导边界层分离的机理

推进技术 ›› 2009, Vol. 30 ›› Issue (2): 229-233.

MHD控制激波诱导边界层分离的机理

苏纬仪,陈立红,张新宇

中国科学院力学研究所/高温气体动力学重点实验室;中国科学院力学研究所/高温气体动力学重点实验室;中国科学院力学研究所/高温气体动力学重点实验室

发布日期:2021-08-15
基金资助:
国家自然科学基金(90305022;10525212)

Investigation of magnetohydrodynamic control on boundary layer separation induced by shock wave

Inst.of Mechanics/Key Lab.of High Temperature Gas Dynamics(LHD),Academia Sinica,Beijing 100190,China;Inst.of Mechanics/Key Lab.of High Temperature Gas Dynamics(LHD),Academia Sinica,Beijing 100190,China;Inst.of Mechanics/Key Lab.of High Temperature Gas Dynamics(LHD),Academia Sinica,Beijing 100190,China

Published:2021-08-15

摘要/Abstract

摘要： 激波边界层相互作用是高超声速飞行器面临的重大问题,激波入射到平板引起的边界层分离是其中最具代表性的一种。用加权的3阶ENN格式计算了小磁雷诺数近似的MHD方程,研究了MHD控制层流边界层分离的机理。数值结果显示,通过局部电离空气并施加洛伦兹力,能使分离点向下游移动,分离区尺寸减小,从而抑制和缓解由于激波-边界层相互作用而引起的分离。

关键词: 冲压喷气发动机;进气道;激波;边界层;边界层分离

Abstract: Shock Wave-Boundary Layer Interactions(SWBLI) are crucial for hypersonic vehicle.Low magnetic Reynolds numbers MHD equations with weighted ENN scheme were solved to investigate the mechanism of MHD control on the boundary layer separation induced by shock wave.The results show that MHD could move the separation point downstream and diminish the separation bubble,and then alleviate or even finally eliminate the shock induced separation.

Key words: Ramjet engine;Inlet;Shock wave;Boundary layer;Boundary layer separation

苏纬仪,陈立红,张新宇. MHD控制激波诱导边界层分离的机理[J]. 推进技术, 2009, 30(2): 229-233.