摘要
Abstract
A numerical method is developed based on an unstructured mesh to compute an ionized hypersonic flowfield with radiation in the thermo-chemical nonequilibrium. The flowfield is described by multi-species Navier-Stocks equations. The chemical model includes 11 species (O2,N2,O,N,NO,NO+,N+,O+,N+2,O+2,e-) and 20 reactions. For simulating the thermal non-equilibrium effect, the two-temperature model is considered. The finite volume method (FVM) used for the spatial and directional discretization of radiative transfer equation(RTE) is described for unstructured grids. The numerical code can handle different kinds of species and radiative bands in a gas thermodynamicly described by two temperatures. In particular, the Delta, Epsilon, Beta prime, and Gamma prime bands of NO are choosen and the distribution of the radiation intensity is obtained.关键词
计算流体力学/辐射/热化学/非平衡Key words
computational fluid dynamics/ radiation/ thermochemistry/ non-equilibrium分类
航空航天
