We have an exciting announcement about badges coming in May 2025. Until then, we will temporarily stop issuing new badges for course completions and certifications. However, all completions will be recorded and fulfilled after May 2025.

Ansys Learning Forum › Forums › Discuss Simulation › Fluids › Fluid velocity in dpm_drag › Reply To: Fluid velocity in dpm_drag

February 23, 2023 at 2:54 pm
Rob
Forum Moderator

The phase thread stuff is here   https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v231/en/flu_udf/flu_udf_GenPurposeLoopingMacros.html%23flu_udf_sec_THREAD_SUB_THREADS  (scroll up a bit).

I can't comment on the undocumented macros. However, you may want to check the way C counts as real uvel = cell->V[1]   may be looking at the vvel! C count 0, 1, 2 etc so directions are x=0, y=1 and z=2.  

 

The Eulerian multiphase model is for more highly packed particles/bubbles/droplets. DPM is good to about 10-14% volume fraction. The latter is computationally cheaper, and works in a different way.Â