耦合辐射的三维热化学非平衡流数值模拟  

Simulation of 3D Hypersonic Ionized and Radiating Flows in Thermal and Chemical Nonequilibrium

作　　者：王逸斌[1] 伍贻兆[1] 刘学强[1] 

机构地区：[1]南京航空航天大学航空宇航学院,江苏南京210016

出　　处：《计算物理》2008年第4期421-426,共6页Chinese Journal of Computational Physics

摘　　要：发展耦合辐射的三维热化学非平衡流场计算方法,可用于非结构网格.采用Jameson有限体积法求解耦合辐射源项的三维N-S方程.辐射源项通过求解辐射输运方程(Radiative Transport Equation RTE)获得.在空间方向上离散后,采用有限体积法求解辐射输运方程.化学模型包含11个组元,20个化学反应.采用该数值方法计算MUSES-C模型在速度为11.6 km.s-1时的绕流流场及前驻点处的辐射热流密度.并通过对比,分析热辐射对流场的影响.A numerical method applicable to unstructured mesh is proposed to compute 3D hypersonic ionized and radiating flowfields in thermo-chemical nonequilibrium. The flowfield is described with multi-specy N-S equations. The chemical model includes 11 species（ 02, N2, O,N, NO, NO^＋ , N^＋ , O^＋ , N^2＋ , O2^＋, e- ） and 20 reactions. For thermal nonequilibrium effect, a two temperature model is considered. Radiation transfer equation （RTE） is solved with finite volume method. Numerical result on MUSES-C is shown and compared with referenced data. Influence of radiation on flowfield is discussed.

关 键 词：计算流体力学 热辐射 热化学非平衡 

分 类 号：V211.3[航空宇航科学与技术—航空宇航推进理论与工程]