Abstract
In order to capture the large range of scales that are important in the dynamics of geophysical systems, it is necessary to turn to large-eddy simulations (LES). There are various candidates for the subgrid-scale modeling used in LES. A preliminary examination of the role of temporal and spatial variability of the eddy viscosity and diffusivity used in such models is presented here. A specific comparison between the Smagorinsky model and a simplified dynamic model (SDM) that allows only temporal variation of the eddy viscosity and eddy diffusivity is made for an application in the modeling of oceanic fine structure.
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© 1999 Springer Science+Business Media Dordrecht
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Orlandi, P., Carnevale, G.F. (1999). Large Eddy Simulations of Stratified Flows. In: Voke, P.R., Sandham, N.D., Kleiser, L. (eds) Direct and Large-Eddy Simulation III. ERCOFTAC Series, vol 7. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9285-7_3
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DOI: https://doi.org/10.1007/978-94-015-9285-7_3
Publisher Name: Springer, Dordrecht
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