DEFINE DPM PROPERTY

- June 26, 2023 at 6:40 pm
  
  mjahed
  Subscriber
  
  Hi,
  I want to use DPM_DEFINE_PROPERTY to specify a custom particle density, Here is my UDF :
  #include "udf.h"
  
  DEFINE_DPM_PROPERTY(droplet_density,c,t,p)
  {
  real rho= P_RHO(p);
  real Tp = P_T(p);
  
  rho = 508 + 967.57693 * pow((1-(Tp/374.15)),0.33);
  
  return rho;
  }
  
  The error after interpreting: error: macro "DEFINE_DPM_PROPERTY" requires 5 arguments, but only 4 are given.
  
  what is the fifth argument?
- June 27, 2023 at 8:10 am
  
  Rob
  Forum Moderator
  
  I'm guessing you've read an older copy of the documentation and then compiled in the current release. So, the argument would be to use the documentation in the solver Help.... More usefully, https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v231/en/flu_udf/flu_udf_DPMDEFINE.html%23flu_udf_sec_define_dpm_property