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locDynOneEqEddy.H File Reference


Detailed Description

View locDynOneEqEddy.H
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Description
    Localised Dynamic One Equation Eddy Viscosity Model
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    Eddy viscosity SGS model using a modeled balance equation to simulate
    the behaviour of k, hence

        d/dt(k) + div(U*k) - div(nuSgs*grad(k))
        =
        -B*L - ce*rho*k^3/2/delta

    and

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

    where

        nuEff = cD*delta^2*||D|| + nu

    A dynamic procedure is here applied to evaluate ck and ce

        ck=<L.M>/<M.M>

    and

        ce=<e*m>/<m*m>

    where

       K = 0.5*(F(U.U) - F(U).F(U))
       L = (F(U*U) - F(U)*F(U) - 0.33*K*I)
       M = delta*(F(sqrt(k)*D) - 2*sqrt(K + filter(k))*F(D))
       m = pow(K + F(k), 3.0/2.0)/(2*delta) - F(pow(k, 3.0/2.0))/delta
       e = 2*delta*ck*(F(sqrt(k)*(D && D)) - 2*sqrt(K + F(k))*(F(D) && F(D)))/

Source files

Definition in file locDynOneEqEddy.H.

Go to the source code of this file.

Namespaces

namespace  Foam
namespace  Foam::LESmodels

Classes

class  locDynOneEqEddy

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