CFD Online Discussion Forums - run-time post-processing for uniformity index

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run-time post-processing for uniformity index

Hello!

I would like to start a run-time post-processing: The output should be the 'uniformity index' (UI) with respect to velocity at a certain outlet patch. The problem is: How do I implement at function with is evaluated during simulation run. I use OF4.1 and do not have swak4Foam installed.

Thanks for advise!

You can create a custom function object and put it in controlDict. It will be compiled and used at runtime. See :

https://github.com/OpenFOAM/OpenFOAM...nctionObject.H.

Caelan

Run time / On the fly Uniformity Index implementation

Here is a code which you can add in your functions inside controlDict for a user plane or a sampled surface :)

Code:

UniformityIndex_User_Plane1

      {

     

        

            enabled         yes;

            type            surfaceFieldValue;

            

            libs            ("libfieldFunctionObjects.so");

            writeControl    timeStep;

            writeInterval   1;

            log             true;

            writeFields     false;

            regionType      sampledSurface;

            name            User_Plane1 ;  

                sampledSurfaceDict

            {

                

                type        sampledTriSurfaceMesh;

                surface     User_Plane_P1.stl;

                source      cells;  // sample cells or boundaryFaces

                interpolate false;

            }

                    operation       uniformity; //- options: sum, areaIntegrate



          //  weightField     phi;

          //scaleFactor 1.183;

            fields

            (

                U

            );    

    }