968c888fc4
Function1 is an abstract base-class of run-time selectable unary functions which may be composed of other Function1's allowing the user to specify complex functions of a single scalar variable, e.g. time. The implementations need not be a simple or continuous functions; interpolated tables and polynomials are also supported. In fact form of mapping between a single scalar input and a single primitive type output is supportable. The primary application of Function1 is in time-varying boundary conditions, it also used for other functions of time, e.g. injected mass is spray simulations but is not limited to functions of time.
146 lines
4.0 KiB
C
146 lines
4.0 KiB
C
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
|
|
\\/ M anipulation |
|
|
-------------------------------------------------------------------------------
|
|
License
|
|
This file is part of OpenFOAM.
|
|
|
|
OpenFOAM 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.
|
|
|
|
OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
Application
|
|
Test-Function1
|
|
|
|
Description
|
|
Tests Function1
|
|
|
|
\*---------------------------------------------------------------------------*/
|
|
|
|
#include "fvCFD.H"
|
|
#include "Function1.H"
|
|
#include "IOdictionary.H"
|
|
#include "linearInterpolationWeights.H"
|
|
#include "splineInterpolationWeights.H"
|
|
|
|
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
#include "setRootCase.H"
|
|
#include "createTime.H"
|
|
#include "createMesh.H"
|
|
|
|
{
|
|
scalarField samples(4);
|
|
samples[0] = 0;
|
|
samples[1] = 1;
|
|
samples[2] = 2;
|
|
samples[3] = 3;
|
|
scalarField values(4);
|
|
values = 1.0;
|
|
//values[0] = 0.0;
|
|
//values[1] = 1.0;
|
|
|
|
linearInterpolationWeights interpolator
|
|
//splineInterpolationWeights interpolator
|
|
(
|
|
samples
|
|
);
|
|
labelList indices;
|
|
scalarField weights;
|
|
|
|
interpolator.integrationWeights(1.1, 1.2, indices, weights);
|
|
Pout<< "indices:" << indices << endl;
|
|
Pout<< "weights:" << weights << endl;
|
|
|
|
scalar baseSum = interpolator.weightedSum
|
|
(
|
|
weights,
|
|
UIndirectList<scalar>(values, indices)
|
|
);
|
|
Pout<< "baseSum=" << baseSum << nl << nl << endl;
|
|
|
|
|
|
// interpolator.integrationWeights(-0.01, 0, indices, weights);
|
|
// scalar partialSum = interpolator.weightedSum
|
|
// (
|
|
// weights,
|
|
// UIndirectList<scalar>(values, indices)
|
|
// );
|
|
// Pout<< "partialSum=" << partialSum << nl << nl << endl;
|
|
//
|
|
//
|
|
// interpolator.integrationWeights(-0.01, 1, indices, weights);
|
|
// //Pout<< "samples:" << samples << endl;
|
|
// //Pout<< "indices:" << indices << endl;
|
|
// //Pout<< "weights:" << weights << endl;
|
|
// scalar sum = interpolator.weightedSum
|
|
// (
|
|
// weights,
|
|
// UIndirectList<scalar>(values, indices)
|
|
// );
|
|
// Pout<< "integrand=" << sum << nl << nl << endl;
|
|
|
|
|
|
return 1;
|
|
}
|
|
|
|
IOdictionary function1Properties
|
|
(
|
|
IOobject
|
|
(
|
|
"function1Properties",
|
|
runTime.constant(),
|
|
mesh,
|
|
IOobject::MUST_READ_IF_MODIFIED,
|
|
IOobject::NO_WRITE
|
|
)
|
|
);
|
|
|
|
autoPtr<Function1<scalar>> function1
|
|
(
|
|
Function1<scalar>::New
|
|
(
|
|
"function1",
|
|
function1Properties
|
|
)
|
|
);
|
|
|
|
scalar x0 = readScalar(function1Properties.lookup("x0"));
|
|
scalar x1 = readScalar(function1Properties.lookup("x1"));
|
|
|
|
Info<< "Data entry type: " << function1().type() << nl << endl;
|
|
|
|
Info<< "Inputs" << nl
|
|
<< " x0 = " << x0 << nl
|
|
<< " x1 = " << x1 << nl
|
|
<< endl;
|
|
|
|
Info<< "Interpolation" << nl
|
|
<< " f(x0) = " << function1().value(x0) << nl
|
|
<< " f(x1) = " << function1().value(x1) << nl
|
|
<< endl;
|
|
|
|
Info<< "Integration" << nl
|
|
<< " int(f(x)) lim(x0->x1) = " << function1().integrate(x0, x1) << nl
|
|
<< endl;
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|