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Time Integration
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Tempus_StepperForwardEuler_decl.hpp
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1//@HEADER
2// *****************************************************************************
3// Tempus: Time Integration and Sensitivity Analysis Package
4//
5// Copyright 2017 NTESS and the Tempus contributors.
6// SPDX-License-Identifier: BSD-3-Clause
7// *****************************************************************************
8//@HEADER
9
10#ifndef Tempus_StepperForwardEuler_decl_hpp
11#define Tempus_StepperForwardEuler_decl_hpp
12
13#include "Tempus_config.hpp"
14#include "Tempus_StepperExplicit.hpp"
16
17namespace Tempus {
18
76template <class Scalar>
77class StepperForwardEuler : virtual public Tempus::StepperExplicit<Scalar> {
78 public:
85
88 const Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> >& appModel,
89 bool useFSAL, std::string ICConsistency, bool ICConsistencyCheck,
90 const Teuchos::RCP<StepperForwardEulerAppAction<Scalar> >&
91 stepperFEAppAction);
92
93 virtual void setAppAction(
94 Teuchos::RCP<StepperForwardEulerAppAction<Scalar> > appAction);
95
96 virtual Teuchos::RCP<StepperForwardEulerAppAction<Scalar> > getAppAction()
97 const
98 {
100 }
101
103 virtual void setInitialConditions(
104 const Teuchos::RCP<SolutionHistory<Scalar> >& solutionHistory);
105
107 virtual void takeStep(
108 const Teuchos::RCP<SolutionHistory<Scalar> >& solutionHistory);
109
111 virtual Teuchos::RCP<Tempus::StepperState<Scalar> > getDefaultStepperState();
112 virtual Scalar getOrder() const { return 1.0; }
113 virtual Scalar getOrderMin() const { return 1.0; }
114 virtual Scalar getOrderMax() const { return 1.0; }
115 virtual void setUseFSAL(bool a)
116 {
117 this->useFSAL_ = a;
118 this->isInitialized_ = false;
119 }
120 virtual OrderODE getOrderODE() const { return FIRST_ORDER_ODE; }
122
124
125 virtual void describe(Teuchos::FancyOStream& out,
126 const Teuchos::EVerbosityLevel verbLevel) const;
128
129 virtual bool isValidSetup(Teuchos::FancyOStream& out) const;
130
131 protected:
132 Teuchos::RCP<StepperForwardEulerAppAction<Scalar> > stepperFEAppAction_;
133};
134
136// ------------------------------------------------------------------------
137template <class Scalar>
138Teuchos::RCP<StepperForwardEuler<Scalar> > createStepperForwardEuler(
139 const Teuchos::RCP<const Thyra::ModelEvaluator<Scalar> >& model,
140 Teuchos::RCP<Teuchos::ParameterList> pl);
141
142} // namespace Tempus
143
144#endif // Tempus_StepperForwardEuler_decl_hpp
SolutionHistory is basically a container of SolutionStates. SolutionHistory maintains a collection of...
Thyra Base interface for implicit time steppers.
Application Action for StepperForwardEuler.
virtual void setInitialConditions(const Teuchos::RCP< SolutionHistory< Scalar > > &solutionHistory)
Set the initial conditions, make them consistent, and set needed memory.
virtual Teuchos::RCP< StepperForwardEulerAppAction< Scalar > > getAppAction() const
virtual void describe(Teuchos::FancyOStream &out, const Teuchos::EVerbosityLevel verbLevel) const
virtual bool isValidSetup(Teuchos::FancyOStream &out) const
virtual Teuchos::RCP< Tempus::StepperState< Scalar > > getDefaultStepperState()
Get a default (initial) StepperState.
Teuchos::RCP< StepperForwardEulerAppAction< Scalar > > stepperFEAppAction_
virtual void takeStep(const Teuchos::RCP< SolutionHistory< Scalar > > &solutionHistory)
Take the specified timestep, dt, and return true if successful.
virtual void setAppAction(Teuchos::RCP< StepperForwardEulerAppAction< Scalar > > appAction)
bool isInitialized_
True if stepper's member data is initialized.
bool useFSAL_
Use First-Same-As-Last (FSAL) principle.
Teuchos::RCP< StepperForwardEuler< Scalar > > createStepperForwardEuler(const Teuchos::RCP< const Thyra::ModelEvaluator< Scalar > > &model, Teuchos::RCP< Teuchos::ParameterList > pl)
Nonmember constructor - ModelEvaluator and ParameterList.
@ FIRST_ORDER_ODE
Stepper integrates first-order ODEs.