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from UDF(fluent) to OpenFOAM code

Hi everybody,
i've to use the following UDF in an OpenFOAM case. I know that OF doesn't use UDF but I don't know how implement the code in OF.
The UDF is used to evaluate the source term of a heat exchange.

Code:

#include "udf.h"

#include "mem.h"



#define TimeCoeff 50.0

#define WGTemp 600.0

DEFINE_SOURCE(sink,c,t,dS,eqn)

{

    real con, source, rho, spheat, temp;

    int tstep;

    tstep = RP_Get_Integer("time-step");

    rho = C_R(c,t);

    spheat = C_CP(c,t);

    temp = C_T(c,t);

        

    if (tstep > 1000)

    {

        source = TimeCoeff*rho*spheat*(WGTemp-temp);

        dS[eqn] = 0.;

    }

    else

    {

        source = dS[eqn] = 0.;        

    }    

return source;

}

Someone can give me some advice or show some example.

Regards

Francesco

Hello Francesc,

In OpenFOAM terms, you can check fvOptions. It allows you to add a source term to the solver governing equations as a part of case setup.

Search here in the forum for fvOptions. Check this [LINK] as an example but I believe it is not the only one.

Best wishes,
Hassan