[Perschr]

Hey everybody,

I'm about to get a free convention around a lamp running and I am stuck, as my case shows some weird behaviour.

My case runs till 10 seconds, then it breaks up, however I don't know why.


1. problem
After running til 10 seconds the case cannot be opened with the command paraFoam. --> see errormessage in the picture. What is the problem here?



2. At the inlet at the bottom I have temperatures of 310 K, however I have a fixedValue boundary of 300K?!? How can that happen?


3. I cannot detect any conjugated heat transfer, not even in the component diode, which is with a Temperatur-boundary of 500K applied. This is pretty uncommon after 10 seconds.

Does someone has Input for me?Thanks!


boundary for the surrounded air:

Code:
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
location "0/domain0";
object T;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //dimensions [ 0 0 0 1 0 0 0 ];
internalField uniform 300;
boundaryField
{
maxY
{
type zeroGradient;
}
minX
{
type fixedValue;
value uniform 300;
}
maxX
{
type inletOutlet;
value uniform 300;
inletValue uniform 300;
}
minY
{
type zeroGradient;
}
minZ
{
type symmetryPlane;
}
maxZ
{
type zeroGradient;
value uniform 300;
}
domain0_to_lampe
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value uniform 300;
Tnbr T;
kappaMethod fluidThermo;
}
domain0_to_schirm
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value uniform 300;
Tnbr T;
kappaMethod fluidThermo;
}
domain0_to_kuehlrippen
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value uniform 300;
Tnbr T;
kappaMethod fluidThermo;
}
domain0_to_schirmhalter
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value uniform 300;
Tnbr T;
kappaMethod fluidThermo;
}
domain0_to_leuchtenhalter
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value uniform 300;
Tnbr T;
kappaMethod fluidThermo;
}
}

U-File of the surrounded air:

Code:
FoamFile
{
version 2.0;
format ascii;
class volVectorField;
location "0/domain0";
object U;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //dimensions [ 0 1 -1 0 0 0 0 ];
internalField uniform ( 0 0 0 );
boundaryField
{
maxY
{
type zeroGradient;
value uniform ( 0 0 0 );
}
minX
{
type pressureInletVelocity;
value uniform ( 0 0 0 );
}
maxX
{
type pressureInletOutletVelocity;
value uniform ( 0 0 0 );
inletValue uniform ( 0 0 0 );
}
minY
{
type zeroGradient;
value uniform ( 0 0 0 );
}
minZ
{
type symmetryPlane;
value uniform ( 0 0 0 );
}
maxZ
{
type zeroGradient;
value uniform ( 0 0 0 );
}
domain0_to_lampe
{
type fixedValue;
value uniform ( 0 0 0 );
}
domain0_to_schirm
{
type fixedValue;
value uniform ( 0 0 0 );
}
domain0_to_kuehlrippen
{
type fixedValue;
value uniform ( 0 0 0 );
}
domain0_to_schirmhalter
{
type fixedValue;
value uniform ( 0 0 0 );
}
domain0_to_leuchtenhalter
{
type fixedValue;
value uniform ( 0 0 0 );
}
}

boundary of the component diode:

Code:
FoamFile
{
version 2.0;
format ascii;
class volScalarField;
location "0/diode";
object T;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //dimensions [ 0 0 0 1 0 0 0 ];
internalField uniform 300;
boundaryField
{
minZ
{
type fixedValue;
value uniform 500;
}
diode_to_lampe
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value uniform 300;
Tnbr T;
kappaMethod solidThermo;
}
diode_to_air2
{
type compressible::turbulentTemperatureCoupledBaffleMix ed;
value uniform 300;
Tnbr T;
kappaMethod solidThermo;
}
}