[jvinuales]

Hi everyone,

I am using OpenFOAM v2006. I need to calculate the mass flow average at different cross-sections of a duct. I was thinking to use a cuttingPlane to do so.

How can I do it? I tried to use the following but function object but I got an error:

tempX1Average
{
    type            surfaceFieldValue;
    libs            ("libfieldFunctionObjects.so");
	writeControl    writeTime;
    fields          (T);
    writeFields     no; // yes | no
    regionType      sampledSurface;
	name            test;
	sampledSurfaceDict
        {
            type            cuttingPlane; 
            planeType       pointAndNormal;
			pointAndNormalDict 
			{ 
				basePoint       (0 0 0);
				normalVector    (1 0 0); 
            } 
        }
	operation 		weightedAreaAverage;
	weightField     phi;

}

The error I got was:

--> FOAM FATAL IO ERROR:
Cannot use weighted operation 'weightedAreaAverage' for sampledSurface

Is there a way to calculate a mass flow average temparature at a cutting plane?