Fluids

Fluids

turbulence length scale in LES

    • aitor.amatriain
      Subscriber

      I want to define a custom field function of the turbulent length scale in LES. Based on the definitions available in the manual

      4.23. Definition of Turbulence Scales (ansys.com)

      it seems that I need to include min/max functions. However, there is no possibility of adding min/max funtions.

      Is there any option to define the turbulent length scale in LES? I need to use the same definition that Fluent uses, since my results are linked to a Synthetic Turbulence Generator.

      Thank you,

      Aitor

    • DrAmine
      Ansys Employee

      Would Fluent Expression be an alternative for you? Or using UDF and storing it as UDM?

    • DrAmine
      Ansys Employee

      Subgrid Fitler length is available as variable.

    • aitor.amatriain
      Subscriber

      Hi Amine,

       

      Thank you for your answer. The use of UDMs could work, yes, thank you for the suggestion.

       

      The Subgrid Filter Length is the same as the LES grid length scale of the expressions that are in the link cited?

       

      Thank you,

       

      Aitor

    • DrAmine
      Ansys Employee

      It must be.

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