heat_transfer_model.hh
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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"


	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(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();

	/// 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();

	/// 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 the static equilibrium
	void solveStatic();
	//
	/// assemble the stiffness matrix
	void assembleStiffnessMatrix();

	private:

	/// compute the heat flux on ghost types
	void updateResidual(const GhostType & ghost_type);

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

	/// assemble the stiffness matrix (w/ ghost type)
	template <UInt dim>
	void assembleStiffnessMatrix(const GhostType & ghost_type);

	/// assemble the stiffness matrix
	template <UInt dim>
	void assembleStiffnessMatrix(const ElementType & type, const GhostType & ghost_type);

	/// 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);

	/// 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 ElementKind & kind);

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

	inline FEEngine & getFEEngineBoundary(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 stiffness matrix
	AKANTU_GET_MACRO(StiffnessMatrix, *stiffness_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:
	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;

	/// stiffness matrix
	SparseMatrix * stiffness_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;

	};


	/* -------------------------------------------------------------------------- */
	/* 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__ */

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