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采用二维多组分有化学反应的Euler方程,考虑单步化学反应,采用有限反应速率模型,对斜爆震波进行计算,通过将数值模拟结果与实验结果对比,验证了数值模拟方法的有效性。在此基础上,对氢空气绕流无限长斜劈的斜爆震过程进行了数值模拟,分析了斜劈角度对斜爆震波特性的影响。结果表明:当斜劈角度增大时,爆震波中的化学反应速率随之增大,相应的斜爆震波的角度也增加,波后的温度更高,同时波后法向马赫数减小。
The Euler equation of two-dimensional multi-component chemical reaction is used to calculate the skew detonation wave by considering the single-step chemical reaction and the finite reaction rate model. The numerical simulation results are compared with the experimental results to verify the effectiveness of the numerical simulation method . On this basis, the numerical simulation of the diagonal detonation process of infinitely long wedge of hydrogen air flow was carried out, and the influence of wedge angle on the characteristics of oblique detonation wave was analyzed. The results show that when the wedge angle increases, the chemical reaction rate in the detonation wave increases, the angle of the corresponding oblique detonation wave increases, the temperature after the wave is higher, and the normal wave Mach number decreases.