计算物理 ›› 2008, Vol. 25 ›› Issue (4): 421-426.

• 研究论文 • 上一篇    下一篇

耦合辐射的三维热化学非平衡流数值模拟

王逸斌, 伍贻兆, 刘学强   

  1. 南京航空航天大学 航空宇航学院, 江苏 南京 210016
  • 收稿日期:2007-04-10 修回日期:2007-07-23 出版日期:2008-07-25 发布日期:2008-07-25
  • 作者简介:王逸斌(1980-),男,江苏,博士,从事高超声速流场气动热和热辐射计算的研究,南京航空航天大学601教研室210016.

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

WANG Yibin, WU Yizhao, LIU Xueqiang   

  1. College of Aerospace Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China
  • Received:2007-04-10 Revised:2007-07-23 Online:2008-07-25 Published:2008-07-25

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.

关键词: 计算流体力学, 热辐射, 热化学非平衡

Abstract: 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(O2, N2, O,N, NO, NO+, N+, O+, N2+, 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.

Key words: computational fluid dynamics, radiation, thermo-chemical nonequilibrium flow

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