CFD Online Discussion Forums - areaAverage sampledSurface

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areaAverage sampledSurface - what does it do exactly?

Hi all,

I have inherited a code which includes the following sampling lines below within the controlDict file.
Does anyone know how the plane areaAverage operation works in OpenFOAM? What's the equation which describes this particular operation?

Would really appreciate your help!

Thanks in advance.

Code:

 

    {

       type            surfaceRegion;

       libs ("libfieldFunctionObjects.so");

  

        enabled         true;

        writeControl    runTime; 

        writeInterval   0.001;

        log             false;

        writeFields     false;

        writeArea       false;

        surfaceFormat   none;

        regionType      sampledSurface;

        name      Mean;



        sampledSurfaceDict

         {

               type        plane;

               basePoint   (0.1524 0 0);

               normalVector (1 0 0);

         }

          operation       areaAverage;

          fields

          (

             rho

          );

      }

Hii there,

you may find it here "https://github.com/OpenFOAM/OpenFOAM-dev/blob/61c9bc2ee31289bc2a91a1fa60f075361fc8e61d/src/functionObjects/field/fieldValues/surfaceFieldValue/surfaceFieldValueTemplates.C"

it is :

Code:



            const scalarField magSf(mag(Sf));



            result = sum(magSf*values)/sum(magSf);

Quote:

Originally Posted by einstein_zee (Post 742883)

Code:



            const scalarField magSf(mag(Sf));



            result = sum(magSf*values)/sum(magSf);

Thanks for this!