[homerun4711]

Hello!

I have yet another question and hope that you can help me.

To simulate a heat flux into a wall (heat transfer in solid, laplacianFoam) I
need to apply a transient gradient to a patch (simulating sun shine).

The values I need to apply are listed in a text file and I would like to
apply them the same way timeVaryingUniformFixedValue is working.

SecondFace
    {
    type         timeVaryingUniformFixedValue;
    fileName     "SecondFace.dat";
    }

Some sort of timeVaryingUniformFixedGradient would be working fine.
Is there something like that or do you have other ideas how this
could be done?

Kind regards,
Walter

[homerun4711]

One thought that came to my mind right now:

In the time step folders there are files listing the boundary conditions and start values for each step. Is it possible to create a part of these files beforehand?

E.g. OpenFOAM finds an already existing temperature file T in the time step directory just listing a new boundaryField-section for that step. The values
for T are written in there automatically during the calculation of the first step.

[gschaider]

Originally Posted by homerun4711

One thought that came to my mind right now:

In the time step folders there are files listing the boundary conditions and start values for each step. Is it possible to create a part of these files beforehand?

E.g. OpenFOAM finds an already existing temperature file T in the time step directory just listing a new boundaryField-section for that step. The values
for T are written in there automatically during the calculation of the first step.

<the sound of Bernhard unashamedly beating the drum of his latest project>

No. Prefeeding the directories with BCs is not possible. But both the things you're trying to do (calculated gradient AKA heatFlux and/or timelines) can be done with groovyBC/swak4Foam

[homerun4711]

Thanks for your answer!

groovyBC looks good.
akidess has already beaten the drums in another thread http://www.cfd-online.com/Forums/ope...tml#post310585

Kind regards,
Walter