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https://github.com/OPM/opm-simulators.git
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271 lines
10 KiB
C++
271 lines
10 KiB
C++
// -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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// vi: set et ts=4 sw=4 sts=4:
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/*
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 2 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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Consult the COPYING file in the top-level source directory of this
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module for the precise wording of the license and the list of
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copyright holders.
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*/
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/*!
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* \file
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*
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* \copydoc Opm::EclNewtonMethod
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*/
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#ifndef EWOMS_ECL_NEWTON_METHOD_HH
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#define EWOMS_ECL_NEWTON_METHOD_HH
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#include <opm/models/blackoil/blackoilnewtonmethod.hh>
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#include <opm/models/utils/signum.hh>
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#include <opm/common/OpmLog/OpmLog.hpp>
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#include <opm/material/common/Unused.hpp>
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namespace Opm::Properties {
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template<class TypeTag, class MyTypeTag>
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struct EclNewtonSumTolerance {
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using type = UndefinedProperty;
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};
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template<class TypeTag, class MyTypeTag>
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struct EclNewtonStrictIterations {
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using type = UndefinedProperty;
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};
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template<class TypeTag, class MyTypeTag>
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struct EclNewtonRelaxedVolumeFraction {
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using type = UndefinedProperty;
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};
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template<class TypeTag, class MyTypeTag>
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struct EclNewtonSumToleranceExponent {
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using type = UndefinedProperty;
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};
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template<class TypeTag, class MyTypeTag>
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struct EclNewtonRelaxedTolerance {
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using type = UndefinedProperty;
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};
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} // namespace Opm::Properties
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namespace Opm {
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/*!
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* \brief A newton solver which is ebos specific.
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*/
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template <class TypeTag>
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class EclNewtonMethod : public BlackOilNewtonMethod<TypeTag>
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{
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typedef BlackOilNewtonMethod<TypeTag> ParentType;
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using DiscNewtonMethod = GetPropType<TypeTag, Properties::DiscNewtonMethod>;
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using Simulator = GetPropType<TypeTag, Properties::Simulator>;
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using FluidSystem = GetPropType<TypeTag, Properties::FluidSystem>;
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using SolutionVector = GetPropType<TypeTag, Properties::SolutionVector>;
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using GlobalEqVector = GetPropType<TypeTag, Properties::GlobalEqVector>;
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using PrimaryVariables = GetPropType<TypeTag, Properties::PrimaryVariables>;
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using EqVector = GetPropType<TypeTag, Properties::EqVector>;
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using Indices = GetPropType<TypeTag, Properties::Indices>;
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using Scalar = GetPropType<TypeTag, Properties::Scalar>;
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using Linearizer = GetPropType<TypeTag, Properties::Linearizer>;
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using ElementContext = GetPropType<TypeTag, Properties::ElementContext>;
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static const unsigned numEq = getPropValue<TypeTag, Properties::NumEq>();
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static constexpr int contiSolventEqIdx = Indices::contiSolventEqIdx;
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static constexpr int contiPolymerEqIdx = Indices::contiPolymerEqIdx;
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static constexpr int contiEnergyEqIdx = Indices::contiEnergyEqIdx;
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friend NewtonMethod<TypeTag>;
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friend DiscNewtonMethod;
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friend ParentType;
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public:
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EclNewtonMethod(Simulator& simulator) : ParentType(simulator)
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{
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errorPvFraction_ = 1.0;
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relaxedMaxPvFraction_ = EWOMS_GET_PARAM(TypeTag, Scalar, EclNewtonRelaxedVolumeFraction);
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sumTolerance_ = 0.0; // this gets determined in the error calculation proceedure
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relaxedTolerance_ = EWOMS_GET_PARAM(TypeTag, Scalar, EclNewtonRelaxedTolerance);
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numStrictIterations_ = EWOMS_GET_PARAM(TypeTag, int, EclNewtonStrictIterations);
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}
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/*!
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* \brief Register all run-time parameters for the Newton method.
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*/
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static void registerParameters()
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{
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ParentType::registerParameters();
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EWOMS_REGISTER_PARAM(TypeTag, Scalar, EclNewtonSumTolerance,
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"The maximum error tolerated by the Newton"
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"method for considering a solution to be "
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"converged");
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EWOMS_REGISTER_PARAM(TypeTag, int, EclNewtonStrictIterations,
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"The number of Newton iterations where the"
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" volumetric error is considered.");
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EWOMS_REGISTER_PARAM(TypeTag, Scalar, EclNewtonRelaxedVolumeFraction,
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"The fraction of the pore volume of the reservoir "
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"where the volumetric error may be voilated during "
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"strict Newton iterations.");
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EWOMS_REGISTER_PARAM(TypeTag, Scalar, EclNewtonSumToleranceExponent,
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"The the exponent used to scale the sum tolerance by "
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"the total pore volume of the reservoir.");
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EWOMS_REGISTER_PARAM(TypeTag, Scalar, EclNewtonRelaxedTolerance,
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"The maximum error which the volumetric residual "
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"may exhibit if it is in a 'relaxed' "
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"region during a strict iteration.");
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}
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/*!
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* \brief Returns true if the error of the solution is below the
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* tolerance.
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*/
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bool converged() const
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{
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if (errorPvFraction_ < relaxedMaxPvFraction_)
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return (this->error_ < relaxedTolerance_ && errorSum_ < sumTolerance_) ;
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else if (this->numIterations() > numStrictIterations_)
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return (this->error_ < relaxedTolerance_ && errorSum_ < sumTolerance_) ;
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return this->error_ <= this->tolerance() && errorSum_ <= sumTolerance_;
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}
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void preSolve_(const SolutionVector&,
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const GlobalEqVector& currentResidual)
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{
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const auto& constraintsMap = this->model().linearizer().constraintsMap();
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this->lastError_ = this->error_;
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Scalar newtonMaxError = EWOMS_GET_PARAM(TypeTag, Scalar, NewtonMaxError);
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// calculate the error as the maximum weighted tolerance of
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// the solution's residual
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this->error_ = 0.0;
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Dune::FieldVector<Scalar, numEq> componentSumError;
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std::fill(componentSumError.begin(), componentSumError.end(), 0.0);
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Scalar sumPv = 0.0;
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errorPvFraction_ = 0.0;
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const Scalar dt = this->simulator_.timeStepSize();
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for (unsigned dofIdx = 0; dofIdx < currentResidual.size(); ++dofIdx) {
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// do not consider auxiliary DOFs for the error
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if (dofIdx >= this->model().numGridDof()
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|| this->model().dofTotalVolume(dofIdx) <= 0.0)
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continue;
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if (!this->model().isLocalDof(dofIdx))
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continue;
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// also do not consider DOFs which are constraint
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if (this->enableConstraints_()) {
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if (constraintsMap.count(dofIdx) > 0)
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continue;
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}
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const auto& r = currentResidual[dofIdx];
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Scalar pvValue =
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this->simulator_.problem().referencePorosity(dofIdx, /*timeIdx=*/0)
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* this->model().dofTotalVolume(dofIdx);
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sumPv += pvValue;
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bool cnvViolated = false;
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Scalar dofVolume = this->model().dofTotalVolume(dofIdx);
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for (unsigned eqIdx = 0; eqIdx < r.size(); ++eqIdx) {
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Scalar tmpError = r[eqIdx] * dt * this->model().eqWeight(dofIdx, eqIdx) / pvValue;
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Scalar tmpError2 = r[eqIdx] * this->model().eqWeight(dofIdx, eqIdx);
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// in the case of a volumetric formulation, the residual in the above is
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// per cubic meter
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if (getPropValue<TypeTag, Properties::UseVolumetricResidual>()) {
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tmpError *= dofVolume;
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tmpError2 *= dofVolume;
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}
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this->error_ = max(std::abs(tmpError), this->error_);
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if (std::abs(tmpError) > this->tolerance_)
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cnvViolated = true;
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componentSumError[eqIdx] += std::abs(tmpError2);
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}
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if (cnvViolated)
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errorPvFraction_ += pvValue;
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}
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// take the other processes into account
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this->error_ = this->comm_.max(this->error_);
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componentSumError = this->comm_.sum(componentSumError);
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sumPv = this->comm_.sum(sumPv);
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errorPvFraction_ = this->comm_.sum(errorPvFraction_);
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componentSumError /= sumPv;
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componentSumError *= dt;
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errorPvFraction_ /= sumPv;
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errorSum_ = 0;
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for (unsigned eqIdx = 0; eqIdx < numEq; ++eqIdx)
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errorSum_ = std::max(std::abs(componentSumError[eqIdx]), errorSum_);
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// scale the tolerance for the total error with the pore volume. by default, the
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// exponent is 1/3, i.e., cubic root.
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Scalar x = EWOMS_GET_PARAM(TypeTag, Scalar, EclNewtonSumTolerance);
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Scalar y = EWOMS_GET_PARAM(TypeTag, Scalar, EclNewtonSumToleranceExponent);
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sumTolerance_ = x*std::pow(sumPv, y);
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this->endIterMsg() << " (max: " << this->tolerance_ << ", violated for " << errorPvFraction_*100 << "% of the pore volume), aggegate error: " << errorSum_ << " (max: " << sumTolerance_ << ")";
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// make sure that the error never grows beyond the maximum
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// allowed one
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if (this->error_ > newtonMaxError)
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throw NumericalIssue("Newton: Error "+std::to_string(double(this->error_))
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+" is larger than maximum allowed error of "
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+std::to_string(double(newtonMaxError)));
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// make sure that the error never grows beyond the maximum
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// allowed one
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if (errorSum_ > newtonMaxError)
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throw NumericalIssue("Newton: Sum of the error "+std::to_string(double(errorSum_))
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+" is larger than maximum allowed error of "
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+std::to_string(double(newtonMaxError)));
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}
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void endIteration_(SolutionVector& nextSolution,
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const SolutionVector& currentSolution)
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{
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ParentType::endIteration_(nextSolution, currentSolution);
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OpmLog::debug( "Newton iteration " + std::to_string(this->numIterations_) + ""
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+ " error: " + std::to_string(double(this->error_))
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+ this->endIterMsg().str());
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this->endIterMsg().str("");
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}
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private:
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Scalar errorPvFraction_;
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Scalar errorSum_;
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Scalar relaxedTolerance_;
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Scalar relaxedMaxPvFraction_;
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Scalar sumTolerance_;
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int numStrictIterations_;
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};
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} // namespace Opm
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#endif
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