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UaUbLimiter.H
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UaUbLimiter.H
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/*---------------------------------------------------------------------------*\
Copyright (C) 2015 Cyrille Bonamy, Julien Chauchat, Tian-Jian Hsu
and contributors
License
This file is part of SedFOAM.
SedFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
SedFOAM 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 General Public License
for more details.
You should have received a copy of the GNU General Public License
along with SedFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
// if alpha < alphaSmall then set Ua = Ub
if (ClipUa.value()==1)
{
surfaceScalarField alphaf(fvc::interpolate(alpha));
forAll(alpha, cell)
{
if (alpha[cell]<alphaSmall.value())
{
Ua[cell] = Ub[cell];
}
}
forAll(alphaf, face)
{
if (alphaf[face]<alphaSmall.value())
{
phia[face] = phib[face];
}
}
phi = alphaf*phia + (1-alphaf)*phib;
}
if (InitFreeze.value()==1)
{
// in this way the bed is immobile in streamwise
volScalarField temp(Ua & gravity);
// extract vertical component of velocity component,we get ( 0 ,0,w)
volVectorField Uatemp(temp*gravity/magSqr(gravity));
scalar indv1((vector(0, 1, 0) & gravity.value()));
scalar indv2((vector(0, 0, 1) & gravity.value()));
int ind = 0;
if (indv1 != 0) {ind = 1;}
if (indv2 != 0) {ind = 2;}
forAll(alpha, cell)
{
// initially, we need to fix the bed level, and let the flow develop
// only cell centers are considered
// 0-->x, 1-->y, 2-->z
if (mesh.cellCentres()[cell][ind] < fixbeddepth.value())
{
// exclude the horizontal conponents
Ua[cell] = Uatemp[cell];
}
}
phia = (fvc::interpolate(Ua) & mesh.Sf());
phi = fvc::interpolate(alpha)*phia + fvc::interpolate(beta)*phib;
}
if (InitFreeze.value()==2)
{
// in this way the bed is immobile in streamwise
volScalarField temp(Ua & gravity);
// extract vertical component of velocity component,we get ( 0 ,0,w)
volVectorField Uatemp(temp*gravity/magSqr(gravity));
// extract spanwise component of velocity, we get ( 0,v,0)
volVectorField Uatemp2((Ua & vector(0, 1, 0))*vector(0, 1, 0));
scalar indv1((vector(0, 1, 0) & gravity.value()));
scalar indv2((vector(0, 0, 1) & gravity.value()));
int ind = 0;
if (indv1 != 0) {ind = 1;}
if (indv2 != 0) {ind = 2;}
forAll(alpha, cell)
{
// initially, we need to fix the bed level, and let the flow develop
// only cell centers are considered
// 0-->x, 1-->y, 2-->z
if (mesh.cellCentres()[cell][ind] < fixbeddepth.value())
{
// only exclude the streamwise conponents
Ua[cell] = Uatemp[cell]+Uatemp2[cell];
}
}
phia = (fvc::interpolate(Ua) & mesh.Sf());
phi = fvc::interpolate(alpha)*phia + fvc::interpolate(beta)*phib;
}