CMS-Flow:Subgrid Turbulence Model

Subgrid Turbulence Model

In CMS-Flow eddy viscosity is calculated as

     ${\nu }_{tc}={\nu }_{t0}+\sqrt{(c_0{u}_{*}h{)}^2+(c_{sm}^2\mathrm{\Delta }x\mathrm{\Delta }y|S|{)}^2}+k(D/\rho {)}^{1/3}$

where ${\nu }_{t0}$ is a base value approximately equal to the dynamic viscosity, and $c_0$ is an empirical coefficient and $c_{sm}$ is an empirical coefficient (Smagorinsky coefficient).

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References

LARSON, M.; HANSON, H., and KRAUS, N. C., 2003. Numerical modeling of beach topography change. Advances in Coastal Modeling, V.C. Lakhan (eds.), Elsevier Oceanography Series, 67, Amsterdam, The Netherlands, 337-365.

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CMS-Flow