Learning Forum

[DJENDARA]

HI , I HAVE A GREAT PROBLEM WHEN I HOOK AN SOURCE TERM I HAVE FOUND THE DIFFERENT RESULTS SPECIALLY WHEN I RUN TOW CALCULATION HAVE SAME STRICTURE EXP : POISSON EQUATION USING "UDS" VS HEAT EQUATION USING ENERGY EQUATION IN FLUENT USING SIMPLE ALGORITHM I FOUND THE FOLLOWING RESULTS :

1 /WHEN I RUN EQUATION WITH INTERPRETED SOURCE TERM FOR ENERGY GIVE REASONABLE RESULT

2 /WHEN I RUN EQUATION WITH INTERPRETED SOURCE TERM FOR ENERGY GIVE HUGE VALUES

THE UDF ARE :

DEFINE_SOURCE(ENERGY_SOURCE, c, thread, dS, eqn)

{

Domain *d = Get_Domain(1);

int fluid_ID = **;

Thread *t_fluid = Lookup_Thread (d,fluid_ID);

Source = C_T(c,t_fluid);

dS[eqn]=1;

return Source;

}

DEFINE_SOURCE(POISSON_SOURCE, c, thread, dS, eqn)

{

Domain *d = Get_Domain(1);

int fluid_ID = **;

Thread *t_fluid = Lookup_Thread (d,fluid_ID);

Source = C_UDSI(c,t_fluid,0);

dS[eqn]=1;

return Source;

}

PLEASE HELP !

[Rob]

Are you adding the source to the energy equation?