UEqn.H

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/*---------------------------------------------------------------------------*\
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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
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\*---------------------------------------------------------------------------*/
// Momentum predictor
 
MRF.correctBoundaryVelocity(U);
 
tmp<fvVectorMatrix> tUEqn
(
    fvm::div(phi, U)
    + MRF.DDt(U)
    + turbulence->divDevReff(U)
    ==
    fvOptions(U)
    );
fvVectorMatrix& UEqn = tUEqn.ref();
 
UEqn.relax();
 
fvOptions.constrain(UEqn);
 
if (simple.momentumPredictor())
{
    uresidual_v = solve(UEqn == -fvc::grad(p)).initialResidual();
    fvOptions.correct(U);
}