[kac24]

Hi,

I am trying to run CHT simulation with chtMultiRegionFoam, and when I run it for some reason solver is solving for velocity in solid region. Interestingly there are two solid regions in the simulation with the same fvSchemes and fvSolution files and in only one of them velocity is solved for. I am using v2306. Any ideas?

A part of output file:

Solving for solid region inletPipe
DICPCG: Solving for h, Initial residual = 0.5244922217, Final residual = 0.001584972087, No Iterations 1
Min/max T:279.15 279.15

Solving for solid region outerSheath
DICPCG: Solving for h, Initial residual = 1, Final residual = 0.008270587379, No Iterations 1
Min/max T:289.5184985 323.15
DILUPBiCGStab: Solving for Ux, Initial residual = 0.9538765849, Final residual = 0.08583732202, No Iterations 1
DILUPBiCGStab: Solving for Uy, Initial residual = 0.953896072, Final residual = 0.08594523695, No Iterations 1
DILUPBiCGStab: Solving for Uz, Initial residual = 0.9697694167, Final residual = 0.0914000689, No Iterations 2
DILUPBiCGStab: Solving for h, Initial residual = 0.7763286214, Final residual = 0.004078107233, No Iterations 1
Min/max T:279.1499992 295.8408169

While fvSchemes are :
for outerSheath
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

ddtSchemes
{
default Euler;
}

gradSchemes
{
default Gauss linear;
}

divSchemes
{
default none;
}

laplacianSchemes
{
default none;
laplacian(alpha,h) Gauss linear corrected;
}

interpolationSchemes
{
default linear;
}

snGradSchemes
{
default corrected;
}


// ************************************************** *********************** //
and fvSolution for Outer Sheath are:
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

solvers
{
h
{
solver PCG;
preconditioner DIC;
tolerance 1e-06;
relTol 0.1;
}

hFinal
{
$h;
tolerance 1e-06;
relTol 0;
}
}

PIMPLE
{
nNonOrthogonalCorrectors 0;
}


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

Used solvers shouldn't even exist in the region!
for comparison fvSolution from inletPipe solid region:
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

solvers
{
h
{
solver PCG;
preconditioner DIC;
tolerance 1e-06;
relTol 0.1;
}

hFinal
{
$h;
tolerance 1e-06;
relTol 0;
}
}

PIMPLE
{
nNonOrthogonalCorrectors 0;
}


// ************************************************** *********************** //
and inletPipe fvSchemes:
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

ddtSchemes
{
default Euler;
}

gradSchemes
{
default Gauss linear;
}

divSchemes
{
default none;
}

laplacianSchemes
{
default none;
laplacian(alpha,h) Gauss linear corrected;
}

interpolationSchemes
{
default linear;
}

snGradSchemes
{
default corrected;
}


// ************************************************** *********************** //
I can't attach the whole case as it is too big even after compression.