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

作　　者：Song-tao Chen Lu-chun Yang Wei-wen Zhao De-cheng Wan 

机构地区：[1]Computational Marine Hydrodynamics Lab(CMHL),School of Naval Architecture,Ocean and Civil Engineering,Shanghai Jiao Tong University,Shanghai,200240,China [2]Wuhan Second Ship Design and Research Institute,Wuhan,430205,China

出　　处：《Journal of Hydrodynamics》2023年第2期199-209,共11页水动力学研究与进展B辑（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Grant No.52131102);the National Key Research and Development Program of China(Grant Nos.2022YFC2806705,2019YFB1704200).

摘　　要：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.

关 键 词：Wall-modeled large eddy simulation(WMLES) axisymmetric body of revolution wall stress model sampling distance Liutex SUBOFF 

分 类 号：O35[理学—流体力学]