[davidsq]

I am trying to write a UDF which tracks how many times each particle hits a wall. I'm assuming that since the DEFINE_DPM_BC macro activates upon particle impact I should use this macro to begin. Additionally in the DEFINE_DPM_EROSION example in fluent help it shows how to track how many impacts occur on a specific face, however I cannot find an example regarding how many times a specific particle impacts the surface.

Any help or guidance for this UDF would be greatly appreciated - even if it's just pointing me in the right directions.

Thanks.