Chaste
Commit::ca8ccdedf819b6e02855bc0e8e6f50bdecbc5208
OdeLinearSystemSolver.cpp
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/*
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Copyright (c) 2005-2024, University of Oxford.
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All rights reserved.
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University of Oxford means the Chancellor, Masters and Scholars of the
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University of Oxford, having an administrative office at Wellington
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Square, Oxford OX1 2JD, UK.
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This file is part of Chaste.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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* Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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* Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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* Neither the name of the University of Oxford nor the names of its
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contributors may be used to endorse or promote products derived from this
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software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "OdeLinearSystemSolver.hpp"
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OdeLinearSystemSolver::OdeLinearSystemSolver
(
unsigned
systemSize,
double
timeStep)
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: mLinearSystem(systemSize)
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{
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assert(timeStep > 0.0);
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mTimeStep
= timeStep;
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// Initialise vectors to zero
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mCurrentSolution
=
PetscTools::CreateAndSetVec
(systemSize, 0.0);
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mForceVector
=
PetscTools::CreateAndSetVec
(systemSize, 0.0);
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}
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OdeLinearSystemSolver::~OdeLinearSystemSolver
()
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{
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PetscTools::Destroy
(
mCurrentSolution
);
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PetscTools::Destroy
(
mForceVector
);
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}
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double
OdeLinearSystemSolver::GetTimeStep
()
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{
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return
mTimeStep
;
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}
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Mat
&
OdeLinearSystemSolver::rGetLhsMatrix
()
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{
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return
mLinearSystem
.
rGetLhsMatrix
();
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}
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Vec
&
OdeLinearSystemSolver::rGetForceVector
()
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{
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return
mForceVector
;
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}
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void
OdeLinearSystemSolver::SetInitialConditionVector
(
Vec
initialConditionsVector)
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{
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VecCopy(initialConditionsVector,
mCurrentSolution
);
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}
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Vec
OdeLinearSystemSolver::SolveOneTimeStep
()
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{
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// Compute the product of the LHS matrix and the current solution vector,
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// setting the answer to be the RHS vector
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MatMult(
mLinearSystem
.
rGetLhsMatrix
(),
mCurrentSolution
,
mLinearSystem
.
rGetRhsVector
());
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// Add timestep multipled by force vector
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PetscVecTools::AddScaledVector
(
mLinearSystem
.
rGetRhsVector
(),
mForceVector
,
mTimeStep
);
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// avoid memory leaks
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PetscTools::Destroy
(
mCurrentSolution
);
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// Having constructed the RHS vector, solve the resulting linear system...
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mCurrentSolution
=
mLinearSystem
.
Solve
();
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return
mCurrentSolution
;
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}
LinearSystem::Solve
Vec Solve(Vec lhsGuess=nullptr)
Definition
LinearSystem.cpp:674
LinearSystem::rGetLhsMatrix
Mat & rGetLhsMatrix()
Definition
LinearSystem.cpp:519
LinearSystem::rGetRhsVector
Vec & rGetRhsVector()
Definition
LinearSystem.cpp:509
Mat
OdeLinearSystemSolver::SolveOneTimeStep
Vec SolveOneTimeStep()
Definition
OdeLinearSystemSolver.cpp:75
OdeLinearSystemSolver::mLinearSystem
LinearSystem mLinearSystem
Definition
OdeLinearSystemSolver.hpp:64
OdeLinearSystemSolver::mForceVector
Vec mForceVector
Definition
OdeLinearSystemSolver.hpp:67
OdeLinearSystemSolver::rGetForceVector
Vec & rGetForceVector()
Definition
OdeLinearSystemSolver.cpp:65
OdeLinearSystemSolver::GetTimeStep
double GetTimeStep()
Definition
OdeLinearSystemSolver.cpp:55
OdeLinearSystemSolver::SetInitialConditionVector
void SetInitialConditionVector(Vec initialConditionsVector)
Definition
OdeLinearSystemSolver.cpp:70
OdeLinearSystemSolver::~OdeLinearSystemSolver
~OdeLinearSystemSolver()
Definition
OdeLinearSystemSolver.cpp:49
OdeLinearSystemSolver::mTimeStep
double mTimeStep
Definition
OdeLinearSystemSolver.hpp:61
OdeLinearSystemSolver::rGetLhsMatrix
Mat & rGetLhsMatrix()
Definition
OdeLinearSystemSolver.cpp:60
OdeLinearSystemSolver::OdeLinearSystemSolver
OdeLinearSystemSolver(unsigned systemSize, double timeStep)
Definition
OdeLinearSystemSolver.cpp:38
OdeLinearSystemSolver::mCurrentSolution
Vec mCurrentSolution
Definition
OdeLinearSystemSolver.hpp:70
PetscTools::CreateAndSetVec
static Vec CreateAndSetVec(int size, double value)
Definition
PetscTools.cpp:258
PetscTools::Destroy
static void Destroy(Vec &rVec)
Definition
PetscTools.hpp:366
PetscVecTools::AddScaledVector
static void AddScaledVector(Vec y, Vec x, double scaleFactor)
Definition
PetscVecTools.cpp:127
Vec
cell_based
src
common
OdeLinearSystemSolver.cpp
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