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/*************************************************************************
* Copyright (C) 2009-2012 by Franck Lominé *
* franck.lomine@insa-rennes.fr *
* *
* This program is free software; it is licensed under the terms of the *
* GNU General Public License v2 or later. See file LICENSE for details. *
* *
*************************************************************************/
#ifdef LBM_ENGINE
#include "LBMnode.hpp"
#include "LBMbody.hpp"
#include "LBMlink.hpp"
namespace yade { // Cannot have #include directive inside.
YADE_PLUGIN((LBMnode)(LBMlink)(LBMbody));
LBMnode::~LBMnode() {};
void LBMnode::MixteBC(string lbmodel, Real density, Vector3r U, string where)
{
Real rhoVx = density * U.x();
Real rhoVy = density * U.y();
if (!strcmp(lbmodel.c_str(), "d2q9")) {
if (!strcmp(where.c_str(), "Xm")) {
f[1] = f[3] + (2. / 3.) * rhoVx;
f[5] = f[7] - 0.5 * (f[2] - f[4]) + (1. / 6.) * rhoVx + 0.5 * rhoVy;
f[8] = f[6] + 0.5 * (f[2] - f[4]) + (1. / 6.) * rhoVx - 0.5 * rhoVy;
} else if (!strcmp(where.c_str(), "Xp")) {
f[3] = f[1] - (2. / 3.) * rhoVx;
f[7] = f[5] + 0.5 * (f[2] - f[4]) - (1. / 6.) * rhoVx - 0.5 * rhoVy;
f[6] = f[8] - 0.5 * (f[2] - f[4]) - (1. / 6.) * rhoVx + 0.5 * rhoVy;
} else if (!strcmp(where.c_str(), "Ym")) {
f[2] = f[4] + (2. / 3.) * rhoVy;
f[5] = f[7] - 0.5 * (f[1] - f[3]) + 0.5 * rhoVx + (1. / 6.) * rhoVy;
f[6] = f[8] + 0.5 * (f[1] - f[3]) - 0.5 * rhoVx + (1. / 6.) * rhoVy;
} else if (!strcmp(where.c_str(), "Yp")) {
f[4] = f[2] - (2. / 3.) * rhoVy;
f[7] = f[5] + 0.5 * (f[1] - f[3]) - 0.5 * rhoVx - (1. / 6.) * rhoVy;
f[8] = f[6] - 0.5 * (f[1] - f[3]) + 0.5 * rhoVx - (1. / 6.) * rhoVy;
} else if (!strcmp(where.c_str(), "XmYmZp")) {
f[1] = f[3] + (2. / 3.) * rhoVx;
f[2] = f[4] + (2. / 3.) * rhoVy;
f[5] = f[7] + (1. / 6.) * density * (U.x() + U.y());
f[6] = 0.5 * (density * (1. - U.x() - (2. / 3.) * U.y()) - f[0] - 2. * (f[3] + f[4] + f[7]));
f[8] = 0.5 * (density * (1. - (2. / 3.) * U.x() - U.y()) - f[0] - 2. * (f[3] + f[4] + f[7]));
} else if (!strcmp(where.c_str(), "XmYpZp")) {
f[1] = f[3] + (2. / 3.) * rhoVx;
f[4] = f[2] - (2. / 3.) * rhoVy;
f[5] = 0.5 * (density * (1. - (2. / 3.) * U.x() + U.y()) - f[0] - 2. * (f[2] + f[3] + f[6]));
f[7] = 0.5 * (density * (1. - U.x() + (2. / 3.) * U.y()) - f[0] - 2. * (f[2] + f[3] + f[6]));
f[8] = f[6] + (1. / 6.) * density * (U.x() - U.y());
} else if (!strcmp(where.c_str(), "XpYmZp")) {
f[2] = f[4] + (2. / 3.) * rhoVy;
f[3] = f[1] - (2. / 3.) * rhoVx;
f[5] = 0.5 * (density * (1. + U.x() - (2. / 3.) * U.y()) - f[0] - 2. * (f[1] + f[4] + f[8]));
f[6] = f[8] - (1. / 6.) * density * (U.x() - U.y());
f[7] = 0.5 * (density * (1. + (2. / 3.) * U.x() - U.y()) - f[0] - 2. * (f[1] + f[4] + f[8]));
} else if (!strcmp(where.c_str(), "XpYpZp")) {
f[3] = f[1] - (2. / 3.) * rhoVx;
f[4] = f[2] - (2. / 3.) * rhoVy;
f[6] = 0.5 * (density * (1. + (2. / 3.) * U.x() + U.y()) - f[0] - 2. * (f[1] + f[2] + f[5]));
f[7] = f[5] - (1. / 6.) * density * (U.x() + U.y());
f[8] = 0.5 * (density * (1. + U.x() + (2. / 3.) * U.y()) - f[0] - 2. * (f[1] + f[2] + f[5]));
} else {
exit(-1);
}
} else {
exit(-1);
}
return;
}
bool LBMnode::checkIsNewObstacle()
{
if (isObstacle) {
if (!wasObstacle) {
isNewObstacle = true;
wasObstacle = true;
} else {
isNewObstacle = false;
wasObstacle = true;
}
return (isNewObstacle);
} else
return (false);
}
bool LBMnode::checkIsNewFluid()
{
if (!isObstacle) {
if (wasObstacle) {
isNewFluid = true;
wasObstacle = false;
} else {
isNewFluid = false;
wasObstacle = false;
}
return (isNewFluid);
} else
return (false);
}
void LBMnode::DispatchBoundaryConditions(int SizeNx, int SizeNy, int /*SizeNz*/)
{
applyBC = false;
applyXmBC = false;
applyYmXmBC = false;
applyYpXmBC = false;
applyXpBC = false;
applyYmXpBC = false;
applyYpXpBC = false;
applyYpBC = false;
applyYmBC = false;
if ((i == 0) && (j > 0) && (j < SizeNy - 1)) {
applyXmBC = true;
applyBC = true;
}
if ((i == 0) && (j == 0)) {
applyYmXmBC = true;
applyBC = true;
}
if ((i == 0) && (j == SizeNy - 1)) {
applyYpXmBC = true;
applyBC = true;
}
if ((i == SizeNx - 1) && (j > 0) && (j < SizeNy - 1)) {
applyXpBC = true;
applyBC = true;
}
if ((i == SizeNx - 1) && (j == 0)) {
applyYmXpBC = true;
applyBC = true;
}
if ((i == SizeNx - 1) && (j == SizeNy - 1)) {
applyYpXpBC = true;
applyBC = true;
}
if ((i > 0) && (i < SizeNx - 1) && (j == 0)) {
applyYmBC = true;
applyBC = true;
}
if ((i > 0) && (i < SizeNx - 1) && (j == SizeNy - 1)) {
applyYpBC = true;
applyBC = true;
}
return;
}
void LBMnode::SetCellIndexesAndPosition(int indI, int indJ, int indK)
{
i = indI;
j = indJ;
k = indK;
posb = Vector3r((Real)indI, (Real)indJ, (Real)indK);
return;
}
} // namespace yade
#endif //LBM_ENGINE
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