CHOLESKY/**< preconditioner is actually a direct solver for symmetric matrices (CHOLESKY factorisation)*/
};
+//! enumeration nonLinearSolver
+/*! the nonLinearSolver can be Newton_SOLVERLAB or using PETSc, Newton_PETSC_LINESEARCH, Newton_PETSC_TRUSTREGION (see Petsc documentation) */
+enum nonLinearSolver
+{
+ Newton_SOLVERLAB,/**< nonLinearSolver is Newton_SOLVERLAB */
+ Newton_PETSC_LINESEARCH,/**< nonLinearSolver is Newton_PETSC_LINESEARCH */
+ Newton_PETSC_LINESEARCH_BASIC,/**< nonLinearSolver is Newton_PETSC_LINESEARCH_BASIC */
+ Newton_PETSC_LINESEARCH_BT,/**< nonLinearSolver is Newton_PETSC_LINESEARCH_BT */
+ Newton_PETSC_LINESEARCH_SECANT,/**< nonLinearSolver is Newton_PETSC_LINESEARCH_SECANT */
+ Newton_PETSC_LINESEARCH_NLEQERR,/**< nonLinearSolver is Newton_PETSC_LINESEARCH_LEQERR */
+ Newton_PETSC_TRUSTREGION,/**< nonLinearSolver is Newton_PETSC_TRUSTREGION */
+ Newton_PETSC_NGMRES,/**< nonLinearSolver is Newton_PETSC_NGMRES */
+ Newton_PETSC_ASPIN/**< nonLinearSolver is Newton_PETSC_ASPIN */
+};
+
//! enumeration saveFormat
/*! the numerical results are saved using MED, VTK or CSV format */
enum saveFormat
ProblemCoreFlows();
virtual ~ProblemCoreFlows();
- // -*-*-*- Gestion du calcul (interface ICoCo -*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
+ // -*-*-*- Gestion du calcul (interface ICoCo) -*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
/** \fn initialize
* \brief Alloue la mémoire et vérifie que le maillage et les conditions limites/initiales sont bien définis
/** \fn solveTimeStep
* \brief calcule les valeurs inconnues au pas de temps +1 .
- * \details c'est une fonction virtuelle ,
+ * \details c'est une fonction virtuelle
* @param void
* \return Renvoie false en cas de problème durant le calcul (valeurs non physiques..)
* */
return _ksptype;
};
+ /** \fn getNonLinearSolver
+ * \brief renvoie _nonLinearSolver (le type du solveur de Newton utilisé)
+ * \details
+ * \param [in] void
+ * \param [out] string
+ * */
+ nonLinearSolver getNonLinearSolver() {
+ return _nonLinearSolver;
+ };
+
/** \fn getNumberOfVariables
* \brief le nombre d'inconnues du problème
* \details
void setLinearSolver(linearSolver solverName, preconditioner pcType);
/** \fn setNewtonSolver
- * \brief set the Newton algorithm parameters
- * \param [in] int maximum number of newton iterations
- * \param [in] double precision required for the convergence of the newton scheme
+ * \brief sets the Newton type algorithm for solving the nonlinear algebraic system arising from the discretisation of the PDE
+ * \param [in] double : precision required for the convergence of the newton scheme
+ * \param [in] int : maximum number of newton iterations
+ * \param [in] nonLinearSolver : the algorithm to be used to solve the nonlinear system
* \param [out] void
* */
- void setNewtonSolver(double precision,int iterations=20)
- {
- _maxNewtonIts=iterations;
- _precision_Newton=precision;
- };
+ void setNewtonSolver(double precision, int iterations=20, nonLinearSolver solverName=Newton_SOLVERLAB);
/** \fn displayConditionNumber
* \brief display the condition number of the preconditioned linear systems
_path=resultsPath;
}
+ /** \fn getTimeScheme
+ * \brief returns the time scheme name
+ * \param [in] void
+ * \param [out] enum TimeScheme (explicit or implicit)
+ * */
+ TimeScheme getTimeScheme();
+
+ /** \fn setNumericalScheme
+ * \brief sets the numerical method ( explicit vs implicit )
+ * \details
+ * \param [in] TimeScheme
+ * \param [out] void
+ * */
+ void setTimeScheme( TimeScheme method);
+
//Couplages Thermohydraulique-thermique-neutronique *-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*-*
/** \fn setHeatPowerField
_system = system;
};
- //Spectrum analysis
+ //Spectral analysis
double getConditionNumber(bool isSingular=false, double tol=1e-6) const;
std::vector< double > getEigenvalues (int nev, EPSWhich which=EPS_SMALLEST_MAGNITUDE, double tol=1e-6) const;
std::vector< Vector > getEigenvectors(int nev, EPSWhich which=EPS_SMALLEST_MAGNITUDE, double tol=1e-6) const;
Field getEigenvectorsField(int nev, EPSWhich which=EPS_SMALLEST_MAGNITUDE, double tol=1e-6) const;
+ std::vector< double > getSingularValues( int nsv, SVDWhich which=SVD_SMALLEST, double tol=1e-6) const;
+ std::vector< Vector > getSingularVectors(int nsv, SVDWhich which=SVD_SMALLEST, double tol=1e-6) const;
// some supplementary functions
* @param name, string, name or description of the matrix
* @return displays the matrix on the terminal
* */
- void displayMatrix(double *matrix, int size, string name);
+ static void displayMatrix(double *matrix, int size, string name="Vector coefficients :");
/** \fn displayMatrix
* \brief displays a vector of size "size" for profiling
* @param name, string, name or description of the vector
* @return displays the vector on the terminal
* */
- void displayVector(double *vector, int size, string name);
-
- /** \fn getTimeScheme
- * \brief returns the time scheme name
- * \param [in] void
- * \param [out] enum TimeScheme (explicit or implicit)
- * */
- TimeScheme getTimeScheme();
-
- /** \fn setNumericalScheme
- * \brief sets the numerical method ( explicit vs implicit )
- * \details
- * \param [in] TimeScheme
- * \param [out] void
- * */
- void setTimeScheme( TimeScheme method);
-
+ static void displayVector(double *vector, int size, string name="Matrix coefficients :");
protected :
PC _pc;
PCType _pctype;
string _pc_hypre;
+ nonLinearSolver _nonLinearSolver;
int _maxPetscIts;//nombre maximum d'iteration gmres autorise au cours d'une resolution de systeme lineaire
int _PetscIts;//the number of iterations of the linear solver
int _maxNewtonIts;//nombre maximum d'iteration de Newton autorise au cours de la resolution d'un pas de temps
int _NEWTON_its;
- Mat _A;//Linear system matrix
+ Mat _A;//Linear system matrix
Vec _b;//Linear system right hand side
double _MaxIterLinearSolver;//nombre maximum d'iteration gmres obtenu au cours par les resolution de systemes lineaires au cours d'un pas de tmeps
bool _conditionNumber;//computes an estimate of the condition number
string _path;//path to execution directory used for saving results
saveFormat _saveFormat;//file saving format : MED, VTK or CSV
+
};
#endif /* PROBLEMCOREFLOWS_HXX_ */
