LES-WALE中Ksgs如何求解

[香柏树]

有关openFoam中LES WALE模型求解Ksgs问题：
1）openFoam计算WALE模型时，没有在各时刻输出k，通过图1的公式和WALE.C文件，知道Ksgs是求解了的。只是没有调用出来。
2）用reactingFoam -postProcess -func turbulenceFields->k -time 0.0466命令得到的k是在总文件夹下的一个日志，打开查看如图2，并不是在某时刻文件夹中或后处理文件夹里。
3）以前用dynamicKEqn模型k是直接输出的，对比了两个模型的.C文件，如图3，将WALE.C做了修改并重新编译，如图4，依旧没有k文件输出。

请问大家怎么才能得到Ksgs呢？

[李东岳]

https://www.cfd-china.com/topic/4790/smagorinsky模型不输出k_sgs场 你看下这个？

[香柏树]

谢谢李老师，我参考您链接里的方法改了WALE.C和.H文件，编译过程都很顺利，但是还是没有输出的Ksgs。想请您帮我看一下，我改动的在图片中，也附上了全部的WALE.C和.H文件。 ```
WALE.C

  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
   \\    /   O peration     | Website:  https://openfoam.org
    \\  /    A nd           | Copyright (C) 2015-2018 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
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 3 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, see <http://www.gnu.org/licenses/>.

\*---------------------------------------------------------------------------*/

#include "WALE.H"
#include "fvOptions.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{
namespace LESModels
{

// * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * * //

template<class BasicTurbulenceModel>
tmp<volSymmTensorField> WALE<BasicTurbulenceModel>::Sd
(
    const volTensorField& gradU
) const
{
    return dev(symm(gradU & gradU));
}


template<class BasicTurbulenceModel>
tmp<volScalarField> WALE<BasicTurbulenceModel>::k
(
    const volTensorField& gradU
) const
{
    volScalarField magSqrSd(magSqr(Sd(gradU)));

    return tmp<volScalarField>
    (
        new volScalarField
        (
            IOobject
            (
                IOobject::groupName("k", this->alphaRhoPhi_.group()),
                this->runTime_.timeName(),
                this->mesh_
            ),
            sqr(sqr(Cw_)*this->delta()/Ck_)*
            (
                pow3(magSqrSd)
               /(
                   sqr
                   (
                       pow(magSqr(symm(gradU)), 5.0/2.0)
                     + pow(magSqrSd, 5.0/4.0)
                   )
                 + dimensionedScalar
                   (
                       "small",
                       dimensionSet(0, 0, -10, 0, 0),
                       small
                   )
               )
            )
        )
    );
}


template<class BasicTurbulenceModel>
void WALE<BasicTurbulenceModel>::correctNut()
{
    k_ = (this->k(fvc::grad(this->U_)));
    this->nut_ = Ck_*this->delta()*sqrt(k_);
    this->nut_.correctBoundaryConditions();
    fv::options::New(this->mesh_).correct(this->nut_);

    BasicTurbulenceModel::correctNut();
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

template<class BasicTurbulenceModel>
WALE<BasicTurbulenceModel>::WALE
(
    const alphaField& alpha,
    const rhoField& rho,
    const volVectorField& U,
    const surfaceScalarField& alphaRhoPhi,
    const surfaceScalarField& phi,
    const transportModel& transport,
    const word& propertiesName,
    const word& type
)
:
    LESeddyViscosity<BasicTurbulenceModel>
    (
        type,
        alpha,
        rho,
        U,
        alphaRhoPhi,
        phi,
        transport,
        propertiesName
    ),

    Ck_
    (
        dimensioned<scalar>::lookupOrAddToDict
        (
            "Ck",
            this->coeffDict_,
            0.094
        )
    ),

    k_
    (
          IOobject
          (
            IOobject::groupName("k", this->alphaRhoPhi_.group()),
            this->runTime_.timeName(),
            this->mesh_,
            IOobject::MUST_READ,
            IOobject::AUTO_WRITE
          ),
          this->mesh_
     ),
    Sd_
    (
          IOobject
          (



    Cw_
    (
        dimensioned<scalar>::lookupOrAddToDict
        (
            "Cw",
            this->coeffDict_,
            0.325
        )
    )
{
    if (type == typeName)
    {
        this->printCoeffs(type);
    }
}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

template<class BasicTurbulenceModel>
bool WALE<BasicTurbulenceModel>::read()
{
    if (LESeddyViscosity<BasicTurbulenceModel>::read())
    {
        Ck_.readIfPresent(this->coeffDict());
        Cw_.readIfPresent(this->coeffDict());

        return true;
    }
    else
    {
        return false;
    }
}


template<class BasicTurbulenceModel>
tmp<volScalarField> WALE<BasicTurbulenceModel>::epsilon() const
{
    volScalarField k(this->k(fvc::grad(this->U_)));

    return tmp<volScalarField>
    (
        new volScalarField
        (
            IOobject
            (
                IOobject::groupName("epsilon", this->alphaRhoPhi_.group()),
                this->runTime_.timeName(),
                this->mesh_,
                IOobject::NO_READ,
                IOobject::NO_WRITE
            ),
            this->Ce_*k*sqrt(k)/this->delta()
        )
    );
}


template<class BasicTurbulenceModel>
void WALE<BasicTurbulenceModel>::correct()
{
    LESeddyViscosity<BasicTurbulenceModel>::correct();
    correctNut();
}


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace LESModels
} // End namespace Foam

// ************************************************************************* //

WALE.H
/---------------------------------------------------------------------------\

\ / F ield	OpenFOAM: The Open Source CFD Toolbox
\ / O peration	Website: https://openfoam.org
\ / A nd	Copyright (C) 2015-2018 OpenFOAM Foundation
\/ M anipulation

---

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 3 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, see <http://www.gnu.org/licenses/>.

Class
Foam::LESModels::WALE

Description
The Wall-adapting local eddy-viscosity (WALE) SGS model.

Reference:
\verbatim
    Nicoud, F., & Ducros, F. (1999).
    Subgrid-scale stress modelling based on the square of the velocity
    gradient tensor.
    Flow, Turbulence and Combustion, 62(3), 183-200.
\endverbatim

The default model coefficients are
\verbatim
    WALECoeffs
    {
        Ck                  0.094;
        Ce                  1.048;e
        Cw                  0.325;
    }
\endverbatim

See also
Foam::LESModels::Smagorinsky

SourceFiles
WALE.C

*---------------------------------------------------------------------------*/

#ifndef WALE_H
#define WALE_H

#include "LESModel.H"
#include "LESeddyViscosity.H"

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

namespace Foam
{
namespace LESModels
{

/---------------------------------------------------------------------------
Class WALE Declaration
*---------------------------------------------------------------------------*/

template<class BasicTurbulenceModel>
class WALE
:
public LESeddyViscosity<BasicTurbulenceModel>
{
// Private Member Functions

    // Disallow default bitwise copy construct and assignment
    WALE(const WALE&);
    void operator=(const WALE&);

protected:

// Protected data

    dimensionedScalar Ck_;
    dimensionedScalar Cw_;
    volScalarField k_;



// Protected Member Functions

    //- Return the deviatoric symmetric part of the square of the given
    //  velocity gradient field
    tmp<volSymmTensorField> Sd(const volTensorField& gradU) const;

    //- Return SGS kinetic energy
    //  calculated from the given velocity gradient
    tmp<volScalarField> k(const volTensorField& gradU) const;

    //- Update the SGS eddy-viscosity
    virtual void correctNut();

public:

typedef typename BasicTurbulenceModel::alphaField alphaField;
typedef typename BasicTurbulenceModel::rhoField rhoField;
typedef typename BasicTurbulenceModel::transportModel transportModel;


//- Runtime type information
TypeName("WALE");


// Constructors

    //- Construct from components
    WALE
    (
        const alphaField& alpha,
        const rhoField& rho,
        const volVectorField& U,
        const surfaceScalarField& alphaRhoPhi,
        const surfaceScalarField& phi,
        const transportModel& transport,
        const word& propertiesName = turbulenceModel::propertiesName,
        const word& type = typeName
    );


//- Destructor
virtual ~WALE()
{}


// Member Functions

    //- Read model coefficients if they have changed
    virtual bool read();

    //- Return SGS kinetic energy
    virtual tmp<volScalarField> k() const
    {
        return k(fvc::grad(this->U_));
    }

    //- Return sub-grid disipation rate
    virtual tmp<volScalarField> epsilon() const;

    //- Correct Eddy-Viscosity and related properties
    virtual void correct();

};

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

} // End namespace LESModels
} // End namespace Foam

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#ifdef NoRepository
#include "WALE.C"
#endif

// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

#endif

// ************************************************************************* //