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Adding line source term for scalar transport by fvOptions

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Old   May 13, 2015, 05:29
Default Adding line source term for scalar transport by fvOptions
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Hi,

I have been trying to add a line source on the ground for scalar transport by fvOptions. My idea is to approximate the line source by a narrow area source. So I extract a faceSet from the lowerWall (the ground boundary) as follows:

Code:
actions
(
    {
        name    f0; //http://openfoamwiki.net/index.php/TopoSet
        type    faceSet;
        action  new;
        source  patchToFace;
        sourceInfo
        {
            name lowerWall; 
        }
    }
    {
        name    f0;
        type    faceSet;  //2D
        action  subset;
        source  boxToFace;
        sourceInfo
        {
             boxes ((1.1076 0 0.4)(1.122 0 1.6)   (1.158 0 0.4)(1.1724 0 1.6));
        }
    }
);
And then I set the source strength in the fvOptions dictionary as follows:

Code:
scalarTracer //name
    {
        type            scalarSemiImplicitSource;
        active          true;
        selectionMode   all;  // all, cellSet, points, cellZone  
        cellSet       f0;//TSsourceCells; 
        
        scalarSemiImplicitSourceCoeffs
        {
            volumeMode      specific; // absolute <quantity>; specific <quantity>/m^3
            injectionRateSuSp 
            {
                TS      (0.2936 0); //kg/m^3/s  0.01/0.0340557 
            }
        }
    }
My code runs well, but there is some important thing that confuses me:
My total source strength is 0.01 kg/s, the area of f0 is 0.0340557 m^2. Is it right to set TS as 0.01/0.0340557 with the volumeMode being 'specific' ?

By the way, if there is better ideas for a line source term, please tell me too.

Thank you!
Wayne
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