Info<< "Reading turbulenceProperties\n" << endl; IOdictionary turbulenceProperties ( IOobject ( "turbulenceProperties", runTime.constant(), mesh, IOobject::MUST_READ_IF_MODIFIED, IOobject::NO_WRITE ) ); volVectorField force = U/dimensionedScalar("dt", dimTime, runTime.deltaT().value()); Kmesh K(mesh); UOprocess forceGen(K, runTime.deltaT().value(), turbulenceProperties);