|关键词: 转捩模型 间歇因子 湍流模型 高超声速流动
|Application and Analysis of γ-Reθ Transition Model in Hypersonic Flow
ZHENG Yun, LI Hong-yang, LIU Da-xiang
(School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)
|The feasibility of γ-Reθ transition model on hypersonic flows was studied by an in-house CFD software. The model was verified by turbulent flows over the T3flat plate for low speed flows. Numerical simulations were conducted for hypersonic flows,taking the around compressible corners and double cone with laminar flow as the examples, with traditional turbulence models and also transition model in order to assess the capability of these models for high speed flows. The computed surface pressure and heat transfer rate were compared with the experimental data. The results indicate that although this transition model is correlated for low speed flows, it could be used to predict the flow transition for hypersonic flows .
|Key words: Transition model Intermittency factor Turbulence model Hypersonic flow