Fluids

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Diffusion model

    • 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.

    • 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.

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