从0开始计算没问题，停掉再续算过几步就出错

[Tens]

在compressibleInterFoam中添加组分方程，组分方程如下：

tmp<fv::convectionScheme<scalar>> mvConvection
(
    fv::convectionScheme<scalar>::New
    (
        mesh,
        fields,
        alpharho2Phi,
        mesh.divScheme("div(phi,Yi)")
    )
);

{
    combustion->correct();
    volScalarField Yt(0.0*Y[0]);

    alpharho2 = alpha2*rho2;
    alpharho2Phi = fvc::interpolate(alpharho2)*phi;
    volScalarField alphamuEff("alphamuEff",alpha2*turbulence.muEff());

    forAll(Y, i)
    {
        if (i != inertIndex && composition.active(i))
        {
            volScalarField& Yi = Y[i];

            fvScalarMatrix YEqn
            (
                fvm::ddt(alpharho2, Yi)
              + mvConvection->fvmDiv(alpharho2Phi, Yi)
              - fvm::laplacian(alphamuEff, Yi)
             ==
                parcels.SYi(i, Yi)
              + combustion->R(Yi)
              + fvOptions(alpharho2, Yi)
            );

            YEqn.relax();

            fvOptions.constrain(YEqn);

            YEqn.solve("Yi");

            fvOptions.correct(Yi);

            Yi.max(0.0);
            Yt += Yi;
        }

    }

    Y[inertIndex] = scalar(1) - Yt;
    Y[inertIndex].max(0.0);

}

从0时刻开始计算没有问题，在某一时刻停掉计算后续算，没过几步就会报错，报错如下，请问各位有什么建议。

[Tens]

顶

[李东岳]

@tens y方程是跟原本求解器偶合在一起的么？

[Tens]

@李东岳 老师说的耦合具体是指什么呢

[李东岳]

@tens 除了添加y方程之外，还做了什么其他的改动么。

[Tens]

@李东岳 就算仿照sprayfoam进行添加的，createFields.H里还添加了下面部分，twoPhaseMixtureThermo里将RhoThermo改为了rhoReactionThermo，应该就这些。

rhoReactionThermo& thermo2 = mixture.thermo2();

basicSpecieMixture& composition = thermo2.composition();
PtrList<volScalarField>& Y = composition.Y();

const word inertSpecie(thermo2.lookup("inertSpecie"));
if (!composition.species().found(inertSpecie))
{
   FatalIOErrorIn(args.executable().c_str(), thermo2)
       << "Inert specie " << inertSpecie << " not found in available species "
       << composition.species()
       << exit(FatalIOError);
}

const label inertIndex(composition.species()[inertSpecie]);

multivariateSurfaceInterpolationScheme<scalar>::fieldTable fields;

forAll(Y, i)
{
   fields.add(Y[i]);
}

surfaceScalarField alpharho2
(
   IOobject
   (
       "alphaRho2Phi",
       runTime.timeName(),
       mesh,
       IOobject::READ_IF_PRESENT,
       IOobject::AUTO_WRITE
   ),
   alpha2*rho2
);

surfaceScalarField alphaRho2Phi
(
   IOobject
   (
       "alphaRho2Phi",
       runTime.timeName(),
       mesh,
       IOobject::READ_IF_PRESENT,
       IOobject::AUTO_WRITE
   ),
   fvc::interpolate(alpha2*rho2)*phi
);

[Fkingdom]

@tens 您好，我也遇到了相似的情况，请问最后解决了吗？

[Tens]

@fkingdom 现在没有这个问题了，不过现在的方程以及求解器改动很多，我也不知道是什么导致的这个问题

[Rachel0096]

@Tens
您好，我参考您的代码也在compressibleInterFoam中添加了组分方程，目前出现了某种组分的质量分数超过1的情况，这个问题困扰我很久了，可以麻烦您帮我看一下代码有什么问题吗？万分感谢！

tmp<fv::convectionScheme<scalar>> mvConvection
(
    fv::convectionScheme<scalar>::New//convectionScheme:Abstract base class for convection schemes.
    (
        mesh,
        fields,
        alpha2rho2phi,
        mesh.divScheme("div(alpha2rho2phi,Yi)")
    )
);

{
    forAll(Y, i)
    {
        if (i != inertIndex && composition.active(i))
        {
            volScalarField& Yi = Y[i];

            fvScalarMatrix YEqn
            (
                fvm::ddt(alpha2rho2, Yi)
              + mvConvection->fvmDiv(alpha2rho2phi, Yi)
              - fvm::laplacian(turbulence.muEff()*alpha2, Yi)
             ==
                alpha2*parcels.SYi(i, Yi) 
              + fvOptions(rho2, Yi)
            );

            YEqn.relax();

            fvOptions.constrain(YEqn);

            YEqn.solve(mesh.solver("Yi"));

            fvOptions.correct(Yi);

            Yi.max(0.0);
            Yt += Yi;
        }

    Y[inertIndex] = scalar(1) - Yt;
    Info<<"info::inertIndex.................="<< inertIndex <<endl;
    Info<<"info::Y[inertIndex].................="<< max(Y[inertIndex]) <<endl;
    Y[inertIndex].max(0.0);

我在createField.H中声明了下列变量：

volScalarField alpha2rho2
(
   IOobject
   (
       "alpha2rho2",
       runTime.timeName(),
       mesh,
       IOobject::READ_IF_PRESENT,
       IOobject::AUTO_WRITE
   ),
   alpha2*rho2
);

 surfaceScalarField alpha2rho2phi
 (
     IOobject
     (
         "alpha2rho2phi",
         runTime.timeName(),
         mesh,
         IOobject::READ_IF_PRESENT,
         IOobject::AUTO_WRITE
     ),
     linearInterpolate(alpha2*rho2*U) & mesh.Sf()
 );