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heat_transfer_model.hh
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			/**
			* @file heat_transfer_model.hh
			*
			* @author Guillaume Anciaux <guillaume.anciaux@epfl.ch>
			* @author Lucas Frerot <lucas.frerot@epfl.ch>
			* @author Srinivasa Babu Ramisetti <srinivasa.ramisetti@epfl.ch>
			* @author Rui Wang <rui.wang@epfl.ch>
			* @author Nicolas Richart <nicolas.richart@epfl.ch>
			*
			* @date creation: Sun May 01 2011
			* @date last modification: Tue Sep 02 2014
			*
			* @brief Model of Heat Transfer
			*
			* @section LICENSE
			*
			* Copyright (©) 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
			* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
			*
			* Akantu is free software: you can redistribute it and/or modify it under the
			* terms of the GNU Lesser General Public License as published by the Free
			* Software Foundation, either version 3 of the License, or (at your option) any
			* later version.
			*
			* Akantu 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 Lesser General Public License for more
			* details.
			*
			* You should have received a copy of the GNU Lesser General Public License
			* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
			*
			*/

			/* -------------------------------------------------------------------------- */

			#ifndef __AKANTU_HEAT_TRANSFER_MODEL_HH__
			#define __AKANTU_HEAT_TRANSFER_MODEL_HH__

			/* -------------------------------------------------------------------------- */
			#include "aka_common.hh"
			#include "aka_types.hh"
			#include "aka_voigthelper.hh"
			#include "aka_memory.hh"
			#include "model.hh"
			#include "integrator_gauss.hh"
			#include "shape_lagrange.hh"
			#include "dumpable.hh"
			#include "parsable.hh"
			#include "solver.hh"
			#include "generalized_trapezoidal.hh"

			namespace akantu {
			class IntegrationScheme1stOrder;
			}

			__BEGIN_AKANTU__

			struct HeatTransferModelOptions : public ModelOptions {
			HeatTransferModelOptions(AnalysisMethod analysis_method = _explicit_lumped_capacity ) : analysis_method(analysis_method) {}
			AnalysisMethod analysis_method;
			};

			extern const HeatTransferModelOptions default_heat_transfer_model_options;

			class HeatTransferModel : public Model, public DataAccessor, public Parsable {
			/* ------------------------------------------------------------------------ */
			/* Constructors/Destructors */
			/* ------------------------------------------------------------------------ */
			public:
			typedef FEEngineTemplate<IntegratorGauss,ShapeLagrange> MyFEEngineType;

			HeatTransferModel(Mesh & mesh,
			UInt spatial_dimension = _all_dimensions,
			const ID & id = "heat_transfer_model",
			const MemoryID & memory_id = 0);

			virtual ~HeatTransferModel() ;

			/* ------------------------------------------------------------------------ */
			/* Methods */
			/* ------------------------------------------------------------------------ */

			public:

			/// generic function to initialize everything ready for explicit dynamics
			void initFull(const ModelOptions & options = default_heat_transfer_model_options);

			/// initialize the fem object of the boundary
			void initFEEngineBoundary(bool create_surface = true);

			/// read one material file to instantiate all the materials
			void readMaterials();

			/// allocate all vectors
			void initArrays();

			/// register the tags associated with the parallel synchronizer
			void initParallel(MeshPartition * partition, DataAccessor * data_accessor=NULL);

			/// initialize the model
			void initModel();

			/// init PBC synchronizer
			void initPBC();

			/// initialize the solver and the jacobian_matrix (called by initImplicit)
			void initSolver(SolverOptions & solver_options);

			/// initialize the stuff for the implicit solver
			void initImplicit(bool dynamic, SolverOptions & solver_options = _solver_no_options);

			/// function to print the contain of the class
			virtual void printself(__attribute__ ((unused)) std::ostream & stream,
			__attribute__ ((unused)) int indent = 0) const {};

			/* ------------------------------------------------------------------------ */
			/* Methods for explicit */
			/* ------------------------------------------------------------------------ */
			public:

			/// compute and get the stable time step
			Real getStableTimeStep();

			/// compute the heat flux
			void updateResidual(bool compute_conductivity = false);

			/// calculate the lumped capacity vector for heat transfer problem
			void assembleCapacityLumped();

			/// update the temperature from the temperature rate
			void explicitPred();

			/// update the temperature rate from the increment
			void explicitCorr();

			/// implicit time integration predictor
			void implicitPred();

			/// implicit time integration corrector
			void implicitCorr();


			/// solve the system in temperature rate @f$C\delta \dot T = q_{n+1} - C \dot T_{n}@f$
			/// this function needs to be run for dynamics
			void solveExplicitLumped();

			// /// initialize the heat flux
			// void initializeResidual(Array<Real> &temp);
			// /// initialize temperature
			// void initializeTemperature(Array<Real> &temp);

			/* ------------------------------------------------------------------------ */
			/* Methods for implicit */
			/* ------------------------------------------------------------------------ */
			public:

			/**
			* solve Kt = q
			**/
			void solveStatic();

			/// test if the system is converged
			template <SolveConvergenceCriteria criteria>
			bool testConvergence(Real tolerance, Real & error);


			/**
			* solve a step (predictor + convergence loop + corrector) using the
			* the given convergence method (see akantu::SolveConvergenceMethod)
			* and the given convergence criteria (see
			* akantu::SolveConvergenceCriteria)
			**/
			template <SolveConvergenceMethod method, SolveConvergenceCriteria criteria>
			bool solveStep(Real tolerance, UInt max_iteration = 100);

			template <SolveConvergenceMethod method, SolveConvergenceCriteria criteria>
			bool solveStep(Real tolerance,
			Real & error,
			UInt max_iteration = 100,
			bool do_not_factorize = false);

			/// assemble the conductivity matrix
			void assembleConductivityMatrix(bool compute_conductivity = true);

			/// assemble the conductivity matrix
			void assembleCapacity();

			/// assemble the conductivity matrix
			void assembleCapacity(GhostType ghost_type);

			/// compute the capacity on quadrature points
			void computeRho(Array<Real> & rho, ElementType type,
			GhostType ghost_type);


			protected:
			/// compute A and solve @f[ A\delta u = f_ext - f_int @f]
			template <GeneralizedTrapezoidal::IntegrationSchemeCorrectorType type>
			void solve(Array<Real> &increment, Real block_val = 1.,
			bool need_factorize = true, bool has_profile_changed = false);

			/// computation of the residual for the convergence loop
			void updateResidualInternal();

			private:

			/// compute the heat flux on ghost types
			void updateResidual(const GhostType & ghost_type, bool compute_conductivity = false);

			/// calculate the lumped capacity vector for heat transfer problem (w ghosttype)
			void assembleCapacityLumped(const GhostType & ghost_type);

			/// assemble the conductivity matrix (w/ ghost type)
			template <UInt dim>
			void assembleConductivityMatrix(const GhostType & ghost_type,
			bool compute_conductivity = true);

			/// assemble the conductivity matrix
			template <UInt dim>
			void assembleConductivityMatrix(const ElementType & type,
			const GhostType & ghost_type,
			bool compute_conductivity = true);

			/// compute the conductivity tensor for each quadrature point in an array
			void computeConductivityOnQuadPoints(const GhostType & ghost_type);

			/// compute vector k \grad T for each quadrature point
			void computeKgradT(const GhostType & ghost_type,bool compute_conductivity);

			/// compute the thermal energy
			Real computeThermalEnergyByNode();

			/* ------------------------------------------------------------------------ */
			/* Data Accessor inherited members */
			/* ------------------------------------------------------------------------ */
			public:
			inline UInt getNbDataForElements(const Array<Element> & elements,
			SynchronizationTag tag) const;
			inline void packElementData(CommunicationBuffer & buffer,
			const Array<Element> & elements,
			SynchronizationTag tag) const;
			inline void unpackElementData(CommunicationBuffer & buffer,
			const Array<Element> & elements,
			SynchronizationTag tag);

			inline UInt getNbDataToPack(SynchronizationTag tag) const;
			inline UInt getNbDataToUnpack(SynchronizationTag tag) const;
			inline void packData(CommunicationBuffer & buffer,
			const UInt index,
			SynchronizationTag tag) const;
			inline void unpackData(CommunicationBuffer & buffer,
			const UInt index,
			SynchronizationTag tag);

			/* ------------------------------------------------------------------------ */
			/* Dumpable interface */
			/* ------------------------------------------------------------------------ */
			public:

			virtual dumper::Field * createNodalFieldReal(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag);

			virtual dumper::Field * createNodalFieldBool(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag);


			virtual dumper::Field * createElementalField(const std::string & field_name,
			const std::string & group_name,
			bool padding_flag,
			const UInt & spatial_dimension,
			const ElementKind & kind);

			/* ------------------------------------------------------------------------ */
			/* Accessors */
			/* ------------------------------------------------------------------------ */
			public:

			inline FEEngine & getFEEngineBoundary(const std::string & name = "");

			AKANTU_GET_MACRO(Density, density, Real);
			AKANTU_GET_MACRO(Capacity, capacity, Real);
			/// get the dimension of the system space
			AKANTU_GET_MACRO(SpatialDimension, spatial_dimension, UInt);
			/// get the current value of the time step
			AKANTU_GET_MACRO(TimeStep, time_step, Real);
			/// set the value of the time step
			AKANTU_SET_MACRO(TimeStep, time_step, Real);
			/// get the assembled heat flux
			AKANTU_GET_MACRO(Residual, *residual, Array<Real>&);
			/// get the lumped capacity
			AKANTU_GET_MACRO(CapacityLumped, *capacity_lumped, Array<Real>&);
			/// get the boundary vector
			AKANTU_GET_MACRO(BlockedDOFs, *blocked_dofs, Array<bool>&);
			/// get conductivity matrix
			AKANTU_GET_MACRO(ConductivityMatrix, *conductivity_matrix, const SparseMatrix&);
			/// get the external heat rate vector
			AKANTU_GET_MACRO(ExternalHeatRate, *external_heat_rate, Array<Real>&);
			/// get the temperature gradient
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(TemperatureGradient, temperature_gradient, Real);
			/// get the conductivity on q points
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(ConductivityOnQpoints, conductivity_on_qpoints, Real);
			/// get the conductivity on q points
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(TemperatureOnQpoints, temperature_on_qpoints, Real);
			/// internal variables
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(KGradtOnQpoints, k_gradt_on_qpoints, Real);
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(IntBtKgT, int_bt_k_gT, Real);
			AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST(BtKgT, bt_k_gT, Real);
			/// get the temperature
			AKANTU_GET_MACRO(Temperature, *temperature, Array<Real> &);
			/// get the temperature derivative
			AKANTU_GET_MACRO(TemperatureRate, *temperature_rate, Array<Real> &);
			/// get the equation number Array<Int>
			AKANTU_GET_MACRO(EquationNumber, *equation_number, const Array<Int> &);

			/// get the energy denominated by thermal
			Real getEnergy(const std::string & energy_id, const ElementType & type, UInt index);
			/// get the energy denominated by thermal
			Real getEnergy(const std::string & energy_id);

			/// get the thermal energy for a given element
			Real getThermalEnergy(const ElementType & type, UInt index);
			/// get the thermal energy for a given element
			Real getThermalEnergy();

			protected:
			/* ----------------------------------------------------------------------- */
			template<class iterator>
			void getThermalEnergy(iterator Eth,
			Array<Real>::const_iterator<Real> T_it,
			Array<Real>::const_iterator<Real> T_end) const;

			/* ------------------------------------------------------------------------ */
			/* Class Members */
			/* ------------------------------------------------------------------------ */
			private:

			/// number of iterations
			UInt n_iter;

			IntegrationScheme1stOrder * integrator;

			/// time step
			Real time_step;

			/// temperatures array
			Array<Real> * temperature;

			/// temperatures derivatives array
			Array<Real> * temperature_rate;

			/// increment array (@f$\delta \dot T@f$ or @f$\delta T@f$)
			Array<Real> * increment;

			/// conductivity matrix
			SparseMatrix * conductivity_matrix;

			/// capacity matrix
			SparseMatrix *capacity_matrix;

			/// jacobian matrix
			SparseMatrix * jacobian_matrix;

			/// the density
			Real density;

			/// the speed of the changing temperature
			ElementTypeMapArray<Real> temperature_gradient;

			/// temperature field on quadrature points
			ElementTypeMapArray<Real> temperature_on_qpoints;

			/// conductivity tensor on quadrature points
			ElementTypeMapArray<Real> conductivity_on_qpoints;

			/// vector k \grad T on quad points
			ElementTypeMapArray<Real> k_gradt_on_qpoints;

			/// vector \int \grad N k \grad T
			ElementTypeMapArray<Real> int_bt_k_gT;

			/// vector \grad N k \grad T
			ElementTypeMapArray<Real> bt_k_gT;

			/// external flux vector
			Array<Real> * external_heat_rate;

			/// residuals array
			Array<Real> * residual;

			/// position of a dof in the K matrix
			Array<Int> * equation_number;

			//lumped vector
			Array<Real> * capacity_lumped;

			/// boundary vector
			Array<bool> * blocked_dofs;

			//realtime
			Real time;

			///capacity
			Real capacity;

			//conductivity matrix
			Matrix<Real> conductivity;

			//linear variation of the conductivity (for temperature dependent conductivity)
			Real conductivity_variation;

			// reference temperature for the interpretation of temperature variation
			Real T_ref;

			//the biggest parameter of conductivity matrix
			Real conductivitymax;

			/// thermal energy by element
			ElementTypeMapArray<Real> thermal_energy;

			/// Solver
			Solver * solver;

			/// analysis method
			AnalysisMethod method;

			/// pointer to the pbc synchronizer
			PBCSynchronizer * pbc_synch;

			};


			/* -------------------------------------------------------------------------- */
			/* inline functions */
			/* -------------------------------------------------------------------------- */

			#if defined (AKANTU_INCLUDE_INLINE_IMPL)
			# include "heat_transfer_model_inline_impl.cc"
			#endif

			/// standard output stream operator
			inline std::ostream & operator <<(std::ostream & stream, const HeatTransferModel & _this)
			{
			_this.printself(stream);
			return stream;
			}


			__END_AKANTU__



			#endif /* __AKANTU_HEAT_TRANSFER_MODEL_HH__ */

rAKA/src/model/heat_transfer/heat_transfer_model.hhb4f38a7e8cc1features/9-generate-a…

heat_transfer_model.hhView Options

rAKA/src/model/heat_transfer/heat_transfer_model.hh
b4f38a7e8cc1features/9-generate-a…

heat_transfer_model.hh
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