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drag-Coefficient error with reactingParcelFilmFoam

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Old   December 14, 2016, 10:16
Default drag-Coefficient error with reactingParcelFilmFoam
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using the reactingParcelFilmFoam solver I want to get the drag-coefficient. The Simulation with the wallFilm looks fine. So I added in the controllDict:

        type                forceCoeffs;
        functionObjectLibs  ( "" );
        outputControl       timeStep;
        outputInterval      1;
        patches             ( "region0.*" );
        pName               p;
        UName               U;
        rhoName             rhoInf;
        log                 true;
        liftDir             (0 0 1);
        dragDir             (1 0 0);
        CofR                (0 0 0);
        pitchAxis           (0 1 0);
        magUInf             8.33;
        rhoInf              1.293;
        lRef                0.11;
        Aref                0.006;
But now I get a really low coefficient:
forceCoeffs forceCoeffs write:
Cm    = 3.404335275e-301
Cd    = 3.540432496e-301
Cl    = 9.554970317e-303
Cl(f) = 3.452110126e-301
Cl(r) = -3.356560423e-301
the dragDir is correct...

Does anybody know whats the problem here?
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