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dynMixedSmagorinsky.H File Reference


Detailed Description

View dynMixedSmagorinsky.H
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Description
      The Mixed Isochoric Smagorinsky Model
      ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      The mixed model is a linear combination of an eddy viscosity  model
      with a scale similarity model.

          B = (L + C) + R = (F(v*v) - F(v)*F(v)) + R

      The algebraic eddy viscosity SGS model is founded on the assumption
      that local equilibrium prevails, hence

          R = 2/3*rho*k*I - 2*nuEff*dev(D)

      where

          k = cI*delta^2*||D||^2
          nuEff = ck*sqrt(k)*delta + nu

      The Leonard and cross contributions are incorporated
      by adding,

          + div(((filter(U*U) - filter(U)*filter(U)) -
            0.333*I*tr(filter(U*U) - filter(U)*filter(U))))
          + div((filter(U*epsilon) - filter(U)*filter(epsilon)))

      to the rhs. of the equations.  This version implements filtering to
      evaluate the coefficients in the model.

Source files

Definition in file dynMixedSmagorinsky.H.

Go to the source code of this file.

Namespaces

namespace  Foam
namespace  Foam::LESmodels

Classes

class  dynMixedSmagorinsky

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