Wall-modeled large eddy simulation for the flows around an axisymmetric body of revolution

The flow around an axisymmetric body of revolution (DARPA SUBOFF bare model) at Re = 1.2 × 10 7 is numerically investigated using the wall-modeled large eddy simulation (WMLES). To evaluate the capabilities of WMLES in such wall-bounded turbulent flows, the effects of the wall stress model and sampl...

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Bibliographic Details
Published in:Journal of hydrodynamics. Series B 2023-04, Vol.35 (2), p.199-209
Main Authors: Chen, Song-tao, Yang, Lu-chun, Zhao, Wei-wen, Wan, De-cheng
Format: Article
Language:English
Subjects:
Engineering
Engineering Fluid Dynamics
Hydrology/Water Resources
Numerical and Computational Physics
Simulation
Special Column on the 6th CMHL Symposium 2023 (Guest Editor De-Cheng Wan)
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Summary:The flow around an axisymmetric body of revolution (DARPA SUBOFF bare model) at Re = 1.2 × 10 7 is numerically investigated using the wall-modeled large eddy simulation (WMLES). To evaluate the capabilities of WMLES in such wall-bounded turbulent flows, the effects of the wall stress model and sampling distance are systematically studied. The numerical results of the non-equilibrium wall stress model with an appropriate sampling distance are in good agreement with the experiments in terms of pressure coefficient, skin-friction coefficient, and drag coefficient. On this basis, the thickening of the turbulent boundary layer and the expansion of the wake can be clearly observed through flow visualization, especially using the Liutex vortex identification method.
ISSN:1001-6058
1878-0342
DOI:10.1007/s42241-023-0026-y