ASL  0.1.7
Advanced Simulation Library
flowRotatingCylinders.cc

Example: Flow around rotating cylinders

/*
* Advanced Simulation Library <http://asl.org.il>
*
* Copyright 2015 Avtech Scientific <http://avtechscientific.com>
*
*
* This file is part of Advanced Simulation Library (ASL).
*
* ASL is free software: you can redistribute it and/or modify it
* under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, version 3 of the License.
*
* ASL 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with ASL. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include <aslDataInc.h>
#include <aslGeomInc.h>
#include <num/aslLBGK.h>
#include <num/aslLBGKBC.h>
typedef float FlT;
//typedef double FlT;
using asl::AVec;
int main(int argc, char* argv[])
{
// Optionally add appParamsManager to be able to manipulate at least
// hardware parameters(platform/device) through command line/parameters file
asl::ApplicationParametersManager appParamsManager("flowRotatingCylinders",
"1.0");
appParamsManager.load(argc, argv);
Param dx(1.);
Param dt(1.);
Param nu(.01);
Param w(2e-3);
Param nuNum(nu.v()*dt.v()/dx.v()/dx.v());
AVec<int> size(asl::makeAVec(100,100,150));
AVec<> gSize(dx.v()*AVec<>(size));
std::cout << "Data initialization... ";
asl::Block block(size,dx.v());
auto exCylMap(asl::generateDataContainerACL_SP<FlT>(block, 1, 1u));
asl::initData(exCylMap,
makeAVec(0.,0.,1.),
.5*gSize),
dx.v()));
auto inCylMap(asl::generateDataContainerACL_SP<FlT>(block, 1, 1u));
asl::initData(inCylMap,
makeAVec(0.,0.,1.),
.5*gSize),
dx.v()));
auto computationalDomainMap(asl::generateDataContainerACL_SP<FlT>(block, 1, 1u));
asl::initData(computationalDomainMap,
makeAVec(0.,0.,1.),
.5*gSize) |
generateDFCylinderInf(.24*gSize[0],
makeAVec(0.,0.,1.),
.5*gSize) |
dx.v()));
std::cout << "Finished" << endl;
std::cout << "Numerics initialization... ";
asl::SPLBGK lbgk(new asl::LBGK(block,
&asl::d3q15()));
lbgk->init();
lbgkUtil->initF(acl::generateVEConstant(.0,.0,.0));
std::vector<asl::SPNumMethod> bc;
std::vector<asl::SPNumMethod> bcV;
auto vfEx(asl::generatePFRotationField(makeAVec(0.,0., w.v()), .5*gSize));
auto vfIn(asl::generatePFRotationField(makeAVec(0.,0.,-2.*w.v()), .5*gSize));
bc.push_back(generateBCVelocity(lbgk, vfEx, exCylMap,computationalDomainMap));
bcV.push_back(generateBCNoSlipVel(lbgk, exCylMap));
bc.push_back(generateBCVelocity(lbgk, vfIn, inCylMap,computationalDomainMap));
bcV.push_back(generateBCNoSlipVel(lbgk, inCylMap));
bc.push_back(generateBCNoSlip(lbgk,{asl::Z0, asl::ZE}));
initAll(bc);
initAll(bcV);
std::cout << "Finished" << endl;
std::cout << "Computing...";
asl::Timer timer;
asl::WriterVTKXML writer("flowRotCylRes");
// writer.addScalars("mapEx", *exCylMap);
// writer.addScalars("mapIn", *inCylMap);
writer.addScalars("map", *computationalDomainMap);
writer.addScalars("rho", *lbgk->getRho());
writer.addVector("v", *lbgk->getVelocity());
executeAll(bcV);
writer.write();
timer.start();
for (unsigned int i(0); i < 10001 ; ++i)
{
lbgk->execute();
if (!(i%1000))
{
cout << i << endl;
executeAll(bcV);
writer.write();
}
}
timer.stop();
cout << "Finished" << endl;
cout << "Computation statistic:" << endl;
cout << "Real Time = " << timer.realTime() << "; Processor Time = "
<< timer.processorTime() << "; Processor Load = "
<< timer.processorLoad() * 100 << "%" << endl;
return 0;
}