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- Massimo Germano
- Center for Turbulence Research, Stanford, California 94305
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- Ugo Piomelli
- Center for Turbulence Research, Stanford, California 94305
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- Parviz Moin
- Center for Turbulence Research, Stanford, California 94305
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- William H. Cabot
- Center for Turbulence Research, Stanford, California 94305
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抄録
<jats:p>One major drawback of the eddy viscosity subgrid-scale stress models used in large-eddy simulations is their inability to represent correctly with a single universal constant different turbulent fields in rotating or sheared flows, near solid walls, or in transitional regimes. In the present work a new eddy viscosity model is presented which alleviates many of these drawbacks. The model coefficient is computed dynamically as the calculation progresses rather than input a priori. The model is based on an algebraic identity between the subgrid-scale stresses at two different filtered levels and the resolved turbulent stresses. The subgrid-scale stresses obtained using the proposed model vanish in laminar flow and at a solid boundary, and have the correct asymptotic behavior in the near-wall region of a turbulent boundary layer. The results of large-eddy simulations of transitional and turbulent channel flow that use the proposed model are in good agreement with the direct simulation data.</jats:p>
収録刊行物
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- Physics of Fluids A: Fluid Dynamics
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Physics of Fluids A: Fluid Dynamics 3 (7), 1760-1765, 1991-07-01
AIP Publishing
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詳細情報 詳細情報について
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- CRID
- 1361137043949764096
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- NII論文ID
- 80005979693
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- NII書誌ID
- AA00773996
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- DOI
- 10.1063/1.857955
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- ISSN
- 08998213
- http://id.crossref.org/issn/00319171
- http://id.crossref.org/issn/08998221
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