模拟跨声速湍流的线性和非线性涡粘性湍流模式(英文)  

Modelling of Turbulent Transonic Flows with Linear and Nonlinear Eddy-Viscosity Turbulence Models

作　　者：杨晓东[1] 马晖扬[1] 

机构地区：[1]中国科学院研究生院,北京100039

出　　处：《中国科学院研究生院学报》2004年第4期454-461,共8页Journal of the Graduate School of the Chinese Academy of Sciences

基　　金：theNationalNaturalScienceFoundationofChina( 90 2 0 5 0 0 2 )

摘　　要：讨论应用线性和非线性涡粘性湍流模式计算跨声速湍流 .用于比较的 3个线性湍流模式是Shih和Lumley的k ε模式 ,CMOTT模式和SST模式 .2个非线性模式是Shih ,Zhu和Lumleyd的二阶模式 ,以及Shih等的三阶模式 .计算的典型流动是绕凸起的跨声速流动 ,该流动的特征是激波与边界层相互作用且伴有流动分离 .计算结果表明非线性湍流模式具有明显的优势 .The predictive performance of linear and nonlinear eddy-viscosity turbulence models for homogeneous shear flow and two transonic flows is presented. Three linear models are:k-ε model of Shih & Lumley, CMOTT and SST model.Two nonlinear models are: the quadratic model of Shih, Zhu & Lumley and the cubic model of Shih, et al.. The benchmark flows are two transonic flows over bump geometries with shock-wave/boundary-layer interaction including separation. The computational results demonstrate the superior performance of nonlinear models over the linear models.

关 键 词：跨声速流 湍流模式 涡粘性 

分 类 号：O354.2[理学—流体力学] O357.5[理学—力学]