UEqn.H

 
/*---------------------------------------------------------------------------*\
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 * In real Time Highly Advanced Computational Applications for Finite Volumes
 * Copyright (C) 2017 by the ITHACA-FV authors
-------------------------------------------------------------------------------
License
    This file is part of ITHACA-FV
    ITHACA-FV is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
    ITHACA-FV is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    GNU Lesser General Public License for more details.
    You should have received a copy of the GNU Lesser General Public License
    along with ITHACA-FV. If not, see <http://www.gnu.org/licenses/>.
Description
    Example of steady NS Reduction Problem solved by the use of the SIMPLE algorithm
SourceFiles
    fsiBasic.C
\*---------------------------------------------------------------------------*/
 
// Solve the Momentum equation
 
//MRF.correctBoundaryVelocity(U);
 
tmp<fvVectorMatrix> tUEqn
(
    fvm::ddt(U)
    + fvc::div(phi, U)
    //+ MRF.DDt(U)
    + turbulence->divDevReff(U)
    ==  fvOptions(U)
);
fvVectorMatrix& UEqn = tUEqn.ref();
 
UEqn.relax();
 
fvOptions.constrain(UEqn);
 
if (pimple.momentumPredictor())
{
    solve(UEqn == -fvc::grad(p));
    // std::cout << "============" << "the divergence of the velocity is "<< "\n";
    // Info<< max(mag(fvc::div(U))) << "\n";
    fvOptions.correct(U);
}