Diffusion model

- July 17, 2023 at 5:26 pm
  
  James
  Subscriber
  
  Good afternoon,
  I'd like to add this equation as part of a source term. Does it already exist in fluent or do I need to implement a UDF? And if not, any tips on how to write the entire left hand side of the equation? Because the dq/dr term also depends on the unsteady term of the transport equation.
- July 25, 2023 at 4:33 am
  
  SRP
  Ansys Employee
  
  Hi,
  To set up additional source term you can UDS.
  For more details, Please refer to Ansys User's guide: 9.1. User-Defined Scalar (UDS) Transport Equations (ansys.com)
  Hope this helps you.
  Thank you.