Multiphase flow properties

- February 2, 2020 at 1:11 am
  
  aminhgn
  Subscriber
  
  Hello,
  
  I am trying to use UDF to define my properties. The problem is 2 phase flow (Liquid Desiccant-humid air). Since both flows are the mixture, I want to use define properties for the liquid desiccant flow but by define_properties loops over all cells. I want to loop over only liquid desiccant solution. for example for calling species which C_YI (c,t,0), I want to apply on liquid desiccant phase.
  
  Thank you,
  
  Amin
- February 3, 2020 at 10:04 am
  
  DrAmine
  Ansys Employee
  
  You require the proper cell thread phase corresponding to the phase containing the component you want to specify. Check the customization manual for more info.
- February 6, 2020 at 7:36 am
  
  aminhgn
  Subscriber
  
  Thank you for your kindly reply. My problem has been solved. I only have one more problem, I want to use DEFINE_SPECIFIC_HEAT to define my cp based on concentration and temperature. this function is :
  
  DEFINE_SPECIFIC_HEAT( name, T, Tref, h, yi)
  
  which i can use T instead of C_T function but what about C_YI which is concentration? How can I get my concentration in my function?
  
  Regards,
  
  Amin
- February 6, 2020 at 12:19 pm
  
  DrAmine
  Ansys Employee
  
  the mass fraction are contained in the pointer array yi passed to the macro.