how to load the heat source to wall
 

Dear my friends

I use the UDF function to define my heat source and want to load it to the top surface as the heat source for lase r welding. but I just find there exist "the heat flux" option in fluent but not "heat source" option. if you know it, can you be kind to tell me or if you know how to define the heat flux of Gaussian beam's laser heat flux equation or UDF function, please tell me!

thanks so much

hey hi i want to know how do we define heat source in fluent