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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2021, Vol. 42 ›› Issue (9): 625711-625711.doi: 10.7527/S1000-6893.2021.25711

• Special Topic of NNW Progress and Application • Previous Articles     Next Articles

C-γ-Reθ model for hypersonic three-dimensional boundary layer transition prediction

XIANG Xinghao1, ZHANG Yifeng1, YUAN Xianxu1, TU Guohua1, WAN Bingbing1, CHEN Jianqiang1,2   

  1. 1. State Key Laboratory of Aerodynamics, China Aerodynamics Research and Development Center, Mianyang 621000, China;
    2. Computational Aerodynamics Institute, China Aerodynamics Research and Development Center, Mianyang 621000, China
  • Received:2021-03-30 Revised:2021-04-23 Published:2021-05-10
  • Supported by:
    National Key Research and Development Program of China (2016YFA0401200); National Numerical Windtunnel Project; National Natural Science Foundation of China (11872370, 12002355)

Abstract: To meet the need for hypersonic three-dimensional boundary layer transition prediction for the National Numerical Windtunnel (NNW) Project, we study the hypersonic cross-flow transition criterion and the transition model. The hypersonic database is expanded using the linear stability theory of the eN method, a fully-localized hypersonic cross-flow transition criterion constructed combining the cross flow strength and surface roughness, a cross-flow extension of the hypersonic modified γ-Reθ transition model conducted based on the Chant 2.0 computing platform, and a C-γ-Reθ transition model suitable for hypersonic 3D boundary layer transition prediction established. The transition model is used to predict the cross-flow transition on hypersonic sharp cones in multiple states, and the predicted results are in good accordance with the experimental results.

Key words: National Numerical Windtunnel Project, hypersonic flow, 3D boundary layer, cross-flow transition, transition model

CLC Number: