Archivio Istituzionale della Ricercan this paper a new mixed model consistent with the filtering formulation has been derived as the subgrid model associated with the product GF of a similarity filter G with a functional filter F. The case where F is the Smagorinsky eddy viscosity filter is discussed in detail, and, in particular, it is shown that some ambiguities concerning the additive coefficient of the usual mixed subgrid model are automatically removed.
The filtering formulation of the mixed subgrid model / Germano, Massimo. - In: PHYSICS OF FLUIDS. - ISSN 1070-6631. - 20:7(2008), pp. 075103/1-075103/2. [10.1063/1.2948850]
The filtering formulation of the mixed subgrid model
GERMANO, MASSIMO
2008
Abstract
n this paper a new mixed model consistent with the filtering formulation has been derived as the subgrid model associated with the product GF of a similarity filter G with a functional filter F. The case where F is the Smagorinsky eddy viscosity filter is discussed in detail, and, in particular, it is shown that some ambiguities concerning the additive coefficient of the usual mixed subgrid model are automatically removed.
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https://hdl.handle.net/11583/1948028
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