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Large Eddy Simulation with Sub-grid Stress Determined by Molecular Simulation and its Applications for Turbulent Channel Flows
Ceng DD(曾丹丹); Zhong FQ(仲峰泉); Fan J(樊菁)
Source PublicationProcedia Engineering
2015
Volume126Pages:88-92
ISSN1877-7058
AbstractIn this paper, a novel simulation method of turbulence by solving filtered Navier-Stokes equations based on LES methodology and calculating the sub-grid scale stress with D-IP method is developed. Compared to the sub-grid scale models used in LES method with Boussinesq assumption, the sub-gird scale stress of the LES-DIP method is directly estimated based on statistics of molecule motions. To validate the LES-DIP method, turbulent channel flow at different Reynolds numbers of Rer=180, 390 and 590 are simulated. The results are found to be in agreement with those of DNS with much smaller computational cost.
KeywordTurbulent Channel Flow Large Eddy Simulation Molecular Statistics Diffusive Information Preservation
DOI10.1016/j.proeng.2015.11.184
Indexed ByEI ; CPCI
Language英语
WOS IDWOS:000380496600017
DepartmentLHD微尺度和非平衡流动
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/59394
Collection高温气体动力学国家重点实验室
Recommended Citation
GB/T 7714
Ceng DD,Zhong FQ,Fan J. Large Eddy Simulation with Sub-grid Stress Determined by Molecular Simulation and its Applications for Turbulent Channel Flows[J]. Procedia Engineering,2015,126:88-92.
APA Ceng DD,Zhong FQ,&Fan J.(2015).Large Eddy Simulation with Sub-grid Stress Determined by Molecular Simulation and its Applications for Turbulent Channel Flows.Procedia Engineering,126,88-92.
MLA Ceng DD,et al."Large Eddy Simulation with Sub-grid Stress Determined by Molecular Simulation and its Applications for Turbulent Channel Flows".Procedia Engineering 126(2015):88-92.
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