[farzadmech]

Hello all,
I want to calculate volume Flowrate and momentum over specified planes and report the value. My problem is that, I do not know how to define a plane. How can I define multiple planes inside the code? I wan integrate over cells and not over points, how it is possible?


Using below commands, I was just can integrate over points and not cells.

Calculate flux across surface

Thanks,
Farzad

[farzadmech]

ok, I find the answer;
when interpolate is false it is integrating over cells, and when interpolate is true, it is integrating over points. To execute the code we need;

postProcess -fields "(* * *)" -latestTime -dict system/integrateOnSurfaceDict

flux
    {
        functionObjectLibs ("libfieldFunctionObjects.so");
        type            surfaceFieldValue; // volFieldValuerrrrrrrrr;  //surfaceFieldValue;

        enabled          true;
        writeControl     outputTime;
        writeInterval    1;
        writeFields      false;

        name farzad;

        // regionType: patch/faceZone/sampledSurface
        regionType    sampledSurface;  //cellZone;  //sampledSurface;

        sampledSurfaceDict
        {
            type                  plane; //thresholdCellFaces; //plane;
            planeType             pointAndNormal;
            pointAndNormalDict
            {
                point  (0 1 0);
                normal (0 1 0);
            };
            interpolate false; //false;
        }

        // Operation: areaAverage/sum/weightedAverage/...
        operation    areaIntegrate;  //areaNormalIntegrate;
        fields
        (
        U.water
            U.waterMean
        );
    }

flux22
    {
        functionObjectLibs ("libfieldFunctionObjects.so");
        type            surfaceFieldValue; // volFieldValuerrrrrrrrr;  //surfaceFieldValue;

        enabled          true;
        writeControl     outputTime;
        writeInterval    1;
        writeFields      false;

        name farzad;

        // regionType: patch/faceZone/sampledSurface
        regionType    sampledSurface;  //cellZone;  //sampledSurface;

        sampledSurfaceDict
        {
            type                 plane; // thresholdCellFaces; //plane;
            planeType             pointAndNormal;
            pointAndNormalDict
            {
                point  (0 1 0);
                normal (0 1 0);
            };
            interpolate true; //false;
        }

        // Operation: areaAverage/sum/weightedAverage/...
        operation    areaIntegrate;  //areaNormalIntegrate;
        fields
        (
            U.water
            U.waterMean
        );
    }

Originally Posted by farzadmech

Hello all,
I want to calculate volume Flowrate and momentum over specified planes and report the value. My problem is that, I do not know how to define a plane. How can I define multiple planes inside the code? I wan integrate over cells and not over points, how it is possible?


Using below commands, I was just can integrate over points and not cells.

Calculate flux across surface

Thanks,
Farzad

Thanks,
Farzad