Journal
AEROSPACE SCIENCE AND TECHNOLOGY
Volume 105, Issue -, Pages -Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ast.2020.106026
Keywords
RANS-LES-Tr; Transition modes; Separation; Full turbulence
Categories
Funding
- National Key Project [GJXM92579]
- National Natural Science Foundation of China [11772174, 91852113, 91952302]
- National Key Research and Development Program of China [2019YFA0405300]
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To predict complex flow, including transition on the windward side and massive separation on the leeward side, a Reynolds averaged Navier Stokes-Large Eddy Simulation (RANS-LES) hybrid model based on the three-equation k-omega-gamma transition model (RANS-LES-Tr) was developed. Then, it was applied to simulate the following three cases, such as the low-speed flow past a cylinder only with the first transition mode, the low-speed prolate spheroid flow at a high angle of attack (AoA) with both the first and crossflow modes; and hypersonic flow past the Orion capsule with the first, second and crossflow modes. RANS-LES-Tr shows much better agreements with available measurements, such as skin friction and heat flux on the windward side, than RANS-LES based on the full turbulence model. (C) 2020 Elsevier Masson SAS. All rights reserved.
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