ASL
0.1.7
Advanced Simulation Library
pitot_tube_ice.cc
Example: Icing process in the Pitot tube
/*
* 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 <
utilities/aslParametersManager.h
>
#include <
math/aslTemplates.h
>
#include <
aslGeomInc.h
>
#include <
aslGenerators.h
>
#include <
acl/aclGenerators.h
>
#include <
writers/aslVTKFormatWriters.h
>
#include <
num/aslLBGK.h
>
#include <
num/aslLBGKBC.h
>
#include <
utilities/aslTimer.h
>
#include <
num/aslFDAdvectionDiffusion.h
>
#include <
num/aslBasicBC.h
>
typedef
float
FlT
;
//typedef double FlT;
typedef
asl::UValue<double>
Param
;
using
asl::AVec
;
using
asl::makeAVec
;
class
Parameters
{
private
:
void
init();
public
:
asl::ApplicationParametersManager
appParamsManager
;
asl::Block::DV
size
;
asl::Parameter<double>
dx
;
asl::Parameter<double>
dt
;
asl::Parameter<double>
tSimulation
;
asl::Parameter<double>
tOutput
;
asl::Parameter<double>
nu
;
asl::UValue<double>
nuNum
;
asl::Parameter<double>
rIn
;
asl::Parameter<double>
rEx
;
asl::Parameter<double>
lCyl
;
asl::Parameter<double>
lCone
;
asl::Parameter<double>
temperature
;
asl::Parameter<double>
humidity
;
asl::Parameter<double>
flowVel
;
void
load
(
int
argc,
char
* argv[]);
Parameters
();
void
updateNumValues
();
};
Parameters::Parameters
():
appParamsManager(
"pitot_tube_ice"
,
"0.1"
),
size(3),
dx
(0.000125,
"dx"
,
"space step"
),
dt(1.,
"dt"
,
"time step"
),
tSimulation(2e-3,
"simulation_time"
,
"simulation time"
),
tOutput(1e-4,
"output_interval"
,
"output interval"
),
nu(6.25e-10/4.,
"nu"
,
"viscosity"
),
rIn(0.0015,
"r_in"
,
"Internal radius, m"
),
rEx(0.005,
"r_ex"
,
"External radius, m"
),
lCyl(0.002,
"l_cyl"
,
"Length of cylindric part, m"
),
lCone(0.02,
"l_cone"
,
"Length of conic part, m"
),
temperature(253,
"temperature"
,
"temperature, K"
),
humidity(.5,
"humidity"
,
"relative humidity, K"
),
flowVel(0.08,
"flow_vel"
,
"flow velocity"
)
{
}
void
Parameters::load
(
int
argc,
char
* argv[])
{
appParamsManager
.
load
(argc, argv);
init();
}
void
Parameters::updateNumValues
()
{
nuNum
=
nu
.
v
() *
dt
.
v
() /
dx
.
v
() /
dx
.
v
();
size
[0] = 1.0*(
lCyl
.
v
() +
lCone
.
v
()) /
dx
.
v
() + 1;
size
[1] =
rEx
.
v
() * 2.5 /
dx
.
v
() + 1;
size
[2] =
rEx
.
v
() * 2.5 /
dx
.
v
() + 1;
}
void
Parameters::init()
{
if
(
rEx
.
v
() <
rIn
.
v
())
asl::errorMessage
(
"External tube's diameter is smaller than internal one"
);
updateNumValues
();
}
// generate geometry
asl::SPDistanceFunction
generateGeometry
(
asl::Block
& block,
Parameters
¶ms)
{
asl::SPDistanceFunction
tubeGeometry;
asl::AVec<double>
orientation(
asl::makeAVec
(1., 0., 0.));
asl::AVec<double>
center(
asl::AVec<double>
(params.
size
)*.5*params.
dx
.
v
());
auto
centerCyl(center);
centerCyl[0] = params.
lCyl
.
v
()*.45;
auto
centerHole(centerCyl+(params.
lCone
.
v
()*.6)*orientation);
auto
lHole(params.
lCyl
.
v
()+params.
lCone
.
v
());
auto
apexCone(centerCyl+orientation*(params.
lCyl
.
v
()*.49+params.
lCone
.
v
()));
tubeGeometry = ((
generateDFCylinder
(params.
rEx
.
v
(), orientation*params.
lCyl
.
v
(), centerCyl) |
generateDFCone
(params.
rEx
.
v
()*.98, -orientation*params.
lCone
.
v
(), apexCone)) &
-
generateDFCylinder
(params.
rIn
.
v
(), orientation*lHole, centerHole)) &
generateDFPlane
(orientation, apexCone-orientation*params.
lCone
.
v
()*.5);
return
asl::normalize
(tubeGeometry, params.
dx
.
v
());
}
int
main
(
int
argc,
char
*argv[])
{
Parameters
params;
params.
load
(argc, argv);
std::cout <<
"Data initialization..."
;
asl::Block
block(params.
size
, params.
dx
.
v
());
auto
mcfMapMem(asl::generateDataContainerACL_SP<FlT>(block, 1, 1u));
asl::initData
(mcfMapMem,
generateGeometry
(block, params));
// auto waterFrac(asl::generateDataContainerACL_SP<FlT>(block, 1, 1u));
// asl::initData(waterFrac, 0);
std::cout <<
"Finished"
<< endl;
std::cout <<
"Flow: Numerics initialization..."
;
auto
templ(&
asl::d3q15
());
asl::SPLBGK
lbgk(
new
asl::LBGK
(block,
acl::generateVEConstant
(
FlT
(params.
nuNum
.
v
())),
templ));
lbgk->init();
asl::SPLBGKUtilities
lbgkUtil(
new
asl::LBGKUtilities
(lbgk));
lbgkUtil->initF(
acl::generateVEConstant
(-0.9*params.
flowVel
.
v
(), params.
flowVel
.
v
()*.4, .0));
auto
flowVel(lbgk->getVelocity());
// auto nmWater(asl::generateFDAdvectionDiffusion(waterFrac, 0.01, flowVel, templ, false));
// nmWater->init();
std::vector<asl::SPNumMethod> bc;
std::vector<asl::SPNumMethod> bcV;
std::vector<asl::SPNumMethod> bcDif;
bc.push_back(
generateBCNoSlip
(lbgk, mcfMapMem));
bc.push_back(
generateBCConstantPressure
(lbgk,1.,{
asl::ZE
}));
bc.push_back(
generateBCConstantPressureVelocity
(lbgk, 1.,
makeAVec
(-params.
flowVel
.
v
()*.9,params.
flowVel
.
v
()*.3,0.),
{
asl::X0
,
asl::XE
,
asl::Y0
,
asl::YE
,
asl::Z0
,
asl::ZE
}));
bcDif.push_back(
generateBCNoSlipVel
(lbgk, mcfMapMem));
bcV.push_back(
generateBCNoSlipRho
(lbgk, mcfMapMem));
// bc.push_back(generateBCConstantGradient(waterFrac, 0., mcfMapMem, templ));
// bc.push_back(generateBCConstantValue(waterFrac, 1., {asl::YE}));
// bc.push_back(generateBCConstantValue(waterFrac, 0., {asl::Y0, asl::Z0, asl::ZE}));
initAll
(bc);
initAll
(bcDif);
initAll
(bcV);
std::cout <<
"Finished"
<< endl;
std::cout <<
"Computing..."
<< endl;
asl::Timer
timer;
asl::WriterVTKXML
writer(params.
appParamsManager
.
getDir
() +
"pitot_tube"
);
writer.
addScalars
(
"map"
, *mcfMapMem);
// writer.addScalars("water", *waterFrac);
writer.addScalars(
"rho"
, *lbgk->getRho());
writer.addVector(
"v"
, *flowVel);
executeAll
(bc);
executeAll
(bcDif);
executeAll
(bcV);
writer.write();
timer.
start
();
for
(
unsigned
int
i(1); i < 8001; ++i)
{
lbgk->execute();
executeAll
(bcDif);
// nmWater->execute();
executeAll
(bc);
if
(!(i%800))
{
timer.
stop
();
cout << i <<
"/8000; time left (estimated): "
<< timer.
estimatedRemainder
(
double
(i)/8000.) << endl;
executeAll
(bcV);
writer.write();
timer.
start
();
}
}
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;
}
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