六类高超声速激波-激波干扰的数值模拟研究  

Numerical investigation for six types of hypersonic turbulent shock-shock interaction

作　　者：田正雨[1] 李桦[1] 范晓樯[1] 

机构地区：[1]国防科技大学航天与材料工程学院,湖南长沙410073

出　　处：《空气动力学学报》2004年第3期361-364,共4页Acta Aerodynamica Sinica

摘　　要：基于粘性全N S方程,利用有限体积法进行数值离散,对Ⅰ到Ⅵ六种类型的激波-激波干扰现象进行了数值模拟,其中采用了二阶Harten TVD格式,LU隐式算法以及Baldwin Lomax代数湍流模型。每种类型都得到了清晰的干扰流场结构,其中Ⅳ型干扰的模拟结果与实验结果进行了比较,符合较好。数值模拟结果的对比指出,由入射位置差异引起的不同类型激波-激波干扰结构有很大不同,对壁面压强分布的影响也存在较大差异。Hypersonic turbulent shock-shock interaction of six types (from I to VI), with different impinging shock conditions, is simulated numerically by solving full N-S equations. Finite volume method, second-order Harten-TVD scheme, lower-upper numerical method and algebraic Baldwin- Lomax model are used. Fluid structure of every type could be seen clearly from the flow field. The simulation result of type IV is compared with experimental data, and makes a good agreement. And from the result, it is observed that fluid structure and wall pressure distribution have obvious differences of different types of interaction.

关 键 词：激波干扰 高超声速 TVD格式 流场结构 N-S方程 有限体积法 湍流模型 二阶 数值离散 隐式 

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] V411