Possibilities with DEFINE_UDS_UNSTEADY in Fluent

    • MarkusP

      Dear community members,

      when having a look at Fluent's UDF DEFINE_UDS_UNSTEADY, I noticed that the description and example given in the documentation only uses a first-order accurate time discretization scheme and constant density.

      Is it possible to use also

      • a second-order accurate time discretization scheme, and/or

      • a non-constant density

      within this UDF?

      Thanks for your help!

      Best regards,

    • Rob
      Ansys Employee

      Looking in the 2020R1 doc I can't see any limitations on density or scalar discretisation. Check the transient section of the User's Guide as it'll be determined by the scalar and not the UDF. 

    • DrAmine
      Ansys Employee
      No limitations.
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