Heat transfer coefficient.

- May 16, 2022 at 12:39 pm
  
  allami
  Subscriber
  
  Hello everyone
  Can anyone tell how fluent calculate the heat transfer coefficient for a surface ( which formula does it use)? as far as I know, h = total wall heat flux/( T_wall -T_ref). The reference temperature is the volume average of the fluid temperature, which is bulk temperature. Using this formula, the heat transfer coefficient will be different from the heat transfer coefficient defined in the fluent.
  Best regards
- May 16, 2022 at 2:05 pm
  
  Kishan Konannavar
  Ansys Employee
  
  Hello
  In a basic way, the Tref is provided by the user in the Reference Values task page.
  Regards
  Kishan
- May 16, 2022 at 2:10 pm
  
  allami
  Subscriber
  
  Yes, I must define the Tref in Task Page. But the heat transfer coefficient ( h ) will be different if I calculated it according to above equation with a custom function.
- May 16, 2022 at 2:58 pm
  
  Rob
  Forum Moderator
  
  Have a look in https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v221/en/flu_ug/flu_ug_fvdefs.html there are several ways to calculate the HTC, or rather several options to take the temperature in the solver.