OpenFOAM logo
Open Source CFD Toolkit

spectEddyVisc.H File Reference


Detailed Description

View spectEddyVisc.H
License
This file is part of OpenFOAM.

OpenFOAM is free software; you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by the
Free Software Foundation; either version 2 of the License, or (at your
option) any later version.

OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with OpenFOAM; if not, write to the Free Software Foundation,
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Description
     The Isochoric spectral Eddy Viscosity Model
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     Algebraic eddy viscosity SGS model founded on the assumption that
     local equilibrium prevail and that viscous effects may be of importance,
     hence

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

     where

         k = cK1*delta^(2/3)*eps^(2/3)*exp(-cK2*delta^(4/3)*nu*eps^(-1/3)) -
             ck3*sqrt(eps*nu)*erfc(ck4*delta^(-2/3)*sqrt(nu)*eps^(-1/6)))

         nuEff = nu/(1 - exp(-cB*pow((nu/nuEff), 1.0/3.0)*pow(Re, -2.0/3.0)))

         Re = delta^2*mag(D)/nu

Source files

Definition in file spectEddyVisc.H.

Go to the source code of this file.

Namespaces

namespace  Foam
namespace  Foam::LESmodels

Classes

class  spectEddyVisc

For further information go to www.openfoam.org