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- W1992484153 abstract "Some thoughts are presented regarding the question: when can a subgrid‐scale model yield correct statistics of resolved fields in a large‐eddy simulation (LES) of turbulent flow. The filtered Navier–Stokes equations are used to find necessary conditions on the statistical properties of the modeled subgrid‐scale stress tensor, for statistical equivalence between a ‘‘real’’ and a modeled (via LES) turbulent velocity field. When trying to formulate sufficient conditions, an unclosed hierarchy of expressions is obtained, essentially due to the ‘‘turbulence problem’’ of the resolved scales of motion. Experimental (statistical a priori) testing of subgrid‐scale models is performed, based on single‐probe measurements in grid turbulence and on several key assumptions. Three versions of the eddy‐viscosity model are considered: constant eddy viscosity, subgrid kinetic energy, and the usual Smagorinsky eddy viscosity. Measured joint moments between filtered velocity and real or modeled subgrid scale stresses show th..." @default.
- W1992484153 created "2016-06-24" @default.
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- W1992484153 date "1994-02-01" @default.
- W1992484153 modified "2023-10-18" @default.
- W1992484153 title "Statistics of turbulence subgrid‐scale stresses: Necessary conditions and experimental tests" @default.
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- W1992484153 doi "https://doi.org/10.1063/1.868320" @default.
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