Could I define DEFINE_DPM_DRAG AND BODY_FORCE
 

Could I activate the DPM_DRAG and DPM_BODY_FORCE at the same time? I can activate only one of them on the same panel, could i write the two codes into one file.c and compile it?

Thanks a lot!

Re: Could I define DEFINE_DPM_DRAG AND BODY_FORCE
 

Of course you can use these two together, but at one time you can only compile one udf file. Just put all of your udfs in a single file.

Re: Could I define DEFINE_DPM_DRAG AND BODY_FORCE
 

Yes, I put two files into the same file, what I want to do is activate the body force and the drag force at the same time (coupled with bulk gas iteration). could you give me some suggestion?

Thanks!

Re: Could I define DEFINE_DPM_DRAG AND BODY_FORCE
 

Yes, you can define "user defined function->body force" for the body force and specify "drag law" for your drag law, individually. I think you didn't click the pull-down of "drag law" of "drag parameters".