Custom variable definition

- June 20, 2019 at 11:44 am
  
  henriquecar
  Subscriber
  
  Hello.
  
  I need to define this variables T(t) and D(t) in Fluent, but I can't seem to find out how to do it. AFAIK the custom field variables definition calculator doesn't permit integrals and Fluent appears to not have the unit surface normal vector.
  
  Is there any way to do it?
  
  Thank you in advance.
- June 20, 2019 at 12:24 pm
  
  Rob
  Ansys Employee
  
  I'm assuming it's the integral over the surface area? You also have monitors of "stuff", Expressions and Surface Reports. You can use a combination of these to get most of what you want.
  
  Failing that you'll need a UDF (user coding) which gives you access to all of the solver variables.

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