Validation of a RANS transition model using a high-order weighted compact nonlinear scheme

查看全文 作　　者：TU [1,2]GuoHua;DENG [1,3]XiaoGang;MAO [1,4]MeiLiang

机构地区：[1]State Key Laboratory of Aerodynamics, China Aerodynamics Research & Development Center;[2]Science and Technology on Scramjet Laboratory, Hypervelocity Aerodynamics Institute of CARDC;[3]National University of Defense Technology;[4]Computational Aerodynamics Institute, China Aerodynamics Research & Development Center

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2013年第56卷第4期,共7页

基　　金：supported by the National Basic Research Program of China (Grant No. 2009CB723800);the National Natural Science Foundation of China (Grand No. 11072259) 摘　　要：A modified transition model is given based on the shear stress transport (SST) turbulence model and an intermittency transport equation. The energy gradient term in the original model is replaced by flow strain rate to saving computational costs. The model employs local variables only, and then it can be conveniently implemented in modern computational fluid dynamics codes. The fifth-order weighted compact nonlinear scheme and the fourth-order staggered scheme are applied to discrete the governing equations for the purpose of minimizing discretization errors, so as to mitigate the confusion between numerical errors and transition model errors. The high-order package is compared with a second-order TVD method on simulating the transitional flow of a flat plate. Numerical results indicate that the high-order package give better grid convergence property than that of the second-order method. Validation of the transition model is performed for transitional flows ranging from low speed to hypersonic speed. 关键词：湍流模型非线性高阶 RANS 紧致加权验证计算流体动力学

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Validation of a RANS transition model using a high-order weighted compact nonlinear scheme

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