[malekan.cfd]

Dear all,

I have a Fluent problem where I defined material properties using a simple UDF, like:

DEFINE_PROPERTY(thermal_conductivity,cell,thread)
{
real tc, T;
T = C_T(cell,thread);

if(T <= 300)
tc = 1;
else
tc = 2;

return tc;
}

When I use this UDF, I have got this error: "MPI Application rank 0 exited before MPI_finalization() with status 2". Can anybody five me ant advice how to solve this error please!

My model works fine without UDF.

Thanks,
Malekan

[AlexanderZ]

did you put

#include "udf.h"

in the header of your UDF?

best regards

[malekan.cfd]

Yes , I did that. In fact, compilation part of the code does not have any problem. When I try to initialize the problem, I receive that error.

Best,

[AlexanderZ]

Try to initialize first, than load UDF

best regards

[malekan.cfd]

I need udfs to define material properties, how can I do initialization without loading udfs?

[LuckyTran]

You don't need material properties to initialize anything

[hongzhilin]

I've had the same error when using fluent in workbench. I was trying FSI and the coupling interface shows this error.

My solution is to delete the fluent module and reset a case. Though the same problem occurred after several times of interrupt and restart, once all parameters are determined and the case is reset, the program also works.