为研究圆锥爆轰波结构及其驻定特性,采用带基元化学反应的二维轴对称Euler方程,数值模拟了高速等当量比H2/空气来流在圆锥体表面形成驻定爆轰波的过程,考察了初始压力、来流马赫数和来流偏折角对流场特性和爆轰波结构的影响.结果表明,较高的初始压力、较大的来流马赫数和来流偏折角有利于形成具有稳定结构的圆锥爆轰波,反之,爆轰波阵面表现为空间规则的不稳定结构甚至只能形成爆燃波.分析并得到了有限圆锥体长度下圆锥爆轰波驻定的临界条件,为实际驻定爆轰推进装置的结构设计提供了理论参考.
To study the conical detonation wave structure and its standing characteristics,the two-dimensional axisymmetric Euler equations were used to numerically study the formation of the standing detonation wave induced by supersonic H2/air incoming flow on the conical surface.The effects of initial pressure,incoming flow Ma and incoming flow deflection angle on the detonation wave structure were investigated.The results show that the higher initial pressure,higher Ma and larger deflection angle are in favor of f...