基于AUSMDV格式的高超声速钝体绕流的数值模拟

围绕高超声速高温流场的高温效应问题,采用有限体积法,以及熵修正的AUSMDV格式,利用时间分裂法求解了完全气体和化学非平衡流场。求解了SOD2激波管问题,并与精确解进行了对比,分析和验证了AUSMDV格式捕获间断的能力。化学非平衡流求解中采用Park化学动力模型,化学反应源项采用准定常法(The New Quasi-Steady-State-Approach)处理,克服了化学反应源项引起的刚性问题,结果与CEA程序的计算结果进行了比较,研究了高超声速圆柱绕流流场,分析了化学反应对流场的影响。结果证明了计算方法与程序的有效性和实用性。

Numerical Simulation for Hypersonic flow around bluff body base on AUSMDV Scheme

This paper focus on the high-temperature effects on hypersonic flow field.,using the finite volume method,the entropy corrected AUSMDV scheme and the time splitting method to compute the perfect gas and chemical non-equilibrium flow field.The SOD2 shock tube problem is computed and the results are compared to exact solutions,and also discuss the ability of AUSMDV to capture discontinuities.Chemical non-equilibrium flow field is also solved using Park chemical kinetic mode,and the chemical source is deal wit...