Reply To: Laser Melting heat source UDF issue [FLUENT Crashing]

[Kanak BUET19]

 

Hi Rob, 

 

Thanks for the earlier suggestions. I have finally been able to run the simulation and also been able to visualize the meltpool. (added below) 

 

I still haven’t added the Marangoni force equation yet. and for that I need to use temperature gradient value. But I am facing a problem. 

 

Here’s a brief summary of my problem : 

 

When inside the DEFINE_ADJUST function , I try to add this following line : 

 

C_TEMP_G_X(c,t) = C_T_G(c,t)[0] ; 

 

After running the simulation fluent crashes instantly. Basically I have renamed the UDMI earlier and now trying to apply the gradient on that UDMI . Any suggestions why is it happening?

 

NOTE : I have alloted sufficient UDMI mannually in the GUI 

 

I renamed it like that : 

 

#include “udf.h”

…..

…..

 

#define C_TEMP_G_X(c, t) C_UDMI(c, t, 8) // Renaming the UDMI 

 

DEFINE_ADJUST(adjust_gradient_heat, domain)

{

… ….

C_TEMP_G_X(c,t) = C_T_G(c,t)[0] ; // Applying X axis temp gradient into the renamed UDMI 

 

 

}