[mehtab]

Hi Foamer,

I want to implement a boundary condition for temperature which depends on mass flow rate and net heat flux Q at same patch.

How can i read a field value at a patch inside a boundary condition class?

Please help. Thanks in advance.

[JNSN]

Hi Cummins,

this should work:

const fvMesh& mesh = patch().boundaryMesh().mesh();
const volScalarField& alpha = mesh.lookupObject<volScalarField>("alpha.water");

Regrads,
Jan

[mehtab]

Originally Posted by JNSN

Hi Cummins,

this should work:

const fvMesh& mesh = patch().boundaryMesh().mesh();
const volScalarField& alpha = mesh.lookupObject<volScalarField>("alpha.water");

Regrads,
Jan

Hi Jan,

Thank you very much for your response. In my problem, I need specific heat Cp and mass flux at a patch in order to calculate my temperature at the same patch.

const fvMesh& mesh = patch().boundaryMesh().mesh();
const surfaceScalarField& phi = mesh.lookupObject<surfaceScalarField>"phi");
const volScalarField& Cp = mesh.lookupObject<volScalarField>"Cp");

I think I should use "phi" for mass flow calculation at the patch. Am I right?

What variable should I use for specific heat calculation (Cp)? I think it should be updated from thermophysical properties.

Thanks in advance...