Define a UDF source term in Curvilinear coordinate system

    • alinik64

      Hi all,

      I am writing a UDF and I have came across a particular problem.

      I have a curved channel and would like to define a source terms for a scalar, like TKE. For some reason it is more convenient for us to define the source term in a curvilinear coordinate system rather than the Cartesian coordinate system. In the mathematical description of the source, we have derivatives of some flow quantities, like velocity, in curvilinear CS.

      my question is does fluent allow us to write derivatives in a curvilinear coordinate system or we have to transform this CS to Cartesian CS?

      Any kind of help is much appreciated and acknowledged.


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