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An eddy viscosity scaled dynamic scale similarity model
Author(s) -
Wagner C.
Publication year - 2001
Publication title -
zamm ‐ journal of applied mathematics and mechanics / zeitschrift für angewandte mathematik und mechanik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.449
H-Index - 51
eISSN - 1521-4001
pISSN - 0044-2267
DOI - 10.1002/zamm.20010811525
Subject(s) - turbulence , large eddy simulation , scale model , direct numerical simulation , mechanics , similarity (geometry) , scale (ratio) , reynolds number , dynamic similarity , turbulence modeling , statistical physics , open channel flow , physics , mathematics , computer science , engineering , artificial intelligence , aerospace engineering , quantum mechanics , image (mathematics)
A new subgrid scale model for Large Eddy Simulations (LES) of wall‐bounded turbulent flows, which is based on scale similarity between resolved stresses and subgrid scale stresses, is proposed. Testing this model a posteriori, the fully developed turbulent channel flow was simulated for a low Reynolds number (based on the channel height H and friction velocity u T ) of Re = 360. Additionally a coarse direct numerical simulation (DNS) without model and a LES with a dynamic Smagorinsky model were performed. Excellent agreement is obtained applying the new model in comparison with Kim et al.'s ]2[ DNS data base.