UEqnRhoSimple.H

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// Solve the Momentum equation
 
MRF.correctBoundaryVelocity(U);
 
if (hasFvSource_)
{
    daFvSourcePtr_->calcFvSource(fvSource);
}
 
tmp<fvVectorMatrix> tUEqn(
    fvm::div(phi, U, divUScheme)
    + MRF.DDt(rho, U)
    + turbulencePtr_->divDevRhoReff(U)
    - fvSource
    - fvOptions(rho, U));
fvVectorMatrix& UEqn = tUEqn.ref();
 
UEqn.relax();
 
fvOptions.constrain(UEqn);
 
// get the solver performance info such as initial
// and final residuals
SolverPerformance<vector> solverU = solve(UEqn == -fvc::grad(p));
 
this->primalResidualControl<vector>(solverU, printToScreen, printInterval, "U");
 
fvOptions.correct(U);
 
// bound U
DAUtility::boundVar(allOptions, U, printToScreen);