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基于高超声速飞行器爆轰推进发展需要,数值研究了由双楔面诱导的斜爆轰波类型及其磁流体(MHD)控制的可行性,探讨了后楔倾角变化对双楔斜爆轰流场与MHD控制的影响.结果表明:对于前、后楔倾角分别为15°与20°的双楔面诱导的斜爆轰,Lorentz力可以将不同来流马赫数条件下的稳定斜爆轰波阵面恢复到设计位置,并可以使不稳定斜爆轰波趋于稳定,但是,无法将不稳定斜爆轰波恢复到设计位置.而当后楔倾角稍微增加时,若爆轰流场稳定,同样可对斜爆轰波阵面进行有效控制.但当后楔倾角大于25°时,稳定斜爆轰波流场失稳,此时MHD无法控制流场稳定性.但若增加气体反应速率,虽然斜爆轰波不稳定,MHD控制却可使其趋于稳定,但无法将爆轰波阵面恢复到设计位置.
Based on the need of development of detonation propulsion for hypersonic vehicle, the feasibility of detonation wave induced by double wedge surface and MHD control is studied numerically. And the influence of MHD control.The results show that for the oblique detonation induced by double wedges with the inclinations of 15 ° and 20 ° respectively, Lorentz force can stabilize the detonation wave array under different Mach numbers Plane back to the design position, and can stabilize the unstable detonation detonation wave, however, it is impossible to restore the unstable detonation detonation wave to the designed position.When the dip angle of the rear wedge slightly increases, if the detonation flow field is stable, But also the effective control of the detonation and detonation front.But when the inclination of the rear wedge is greater than 25 °, the stability of the flow field of the stable detonation and detonation waves is not stable, but MHD can not control the stability of the flow field.However, if the gas reaction rate is increased, Although the detonation wave instability, MHD control can make it tend to be stable, but can not be detonated wavefront restored to the design position.