Adding Equations in custom solver
 

Hi Foamers,

I know this is a silly question but I would like to know how to write the following equation in Openfoam custom solver.

http://ars.els-cdn.com/content/image...01558-si16.gif

I have wrote the following line.

tmp<fvScalar> rhoCEqn
(
fvm::laplacian(epsilonR, rhoC)
== rhoC / (sqr(lamdaD) ;
);

where, epsilonR and lamdaD are constants

Regards,
Rafath

Hi,

You can do directly:

solve
(
fvm::laplacian(epsilonR, rhoC) - (rhoC / Foam::sqr(lamdaD))
);


and you must read your "lamdaD" value by defining it in your createFields.H file as the following:

dimensionedScalar lambaD
(
transportProperties.lookup("lamdaD")
);


then before lunching the simulation, you must provide the value of lamdaD in the case_Folder/constant/transportProperties
like : lamdaD lamdaD [ 0 ---- dimensions---- 0 ] its_value;

Have Fun !

T.D.

thanks a lot T.D .:)