/usr/include/lorene/C++/Include/excision_hor.h is in liblorene-dev 0.0.0~cvs20161116+dfsg-1.
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* Definition of Lorene class Excision_hor, friend class of Spheroid.
*
*/
/*
* Copyright (c) 2009 Jose-Luis Jaramillo & Nicolas Vasset
*
* This file is part of LORENE.
*
* LORENE is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* LORENE 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LORENE; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#ifndef __EXCISIONHOR_H_
#define __EXCISIONHOR_H_
/*
* $Header: /cvsroot/Lorene/C++/Include/excision_hor.h,v 1.3 2014/10/13 08:52:34 j_novak Exp $
*
*/
#include "metric.h"
#include "spheroid.h"
namespace Lorene {
/**
* Surface where boundary conditions for quantities in the bulk will be calculated
* It relies on geometrical properties of the associated Spheroid\ingroup (star)
* (*** WARNING! under development***)
*
*/
class Excision_hor {
// Data :
// -----
protected:
/// The associated Spheroid object
Spheroid sph ;
///The value of the conformal factor on the 3-slice
Scalar conf_fact ;
/** The lapse defined on the 3 slice*/
Scalar lapse ;
/** The Shift 3-vector on the slice **/
Vector shift ;
/** The 3-d metric on the slice*/
Metric gamij ;
/** The 3-d extrinsic curvature on the slice */
Sym_tensor Kij ;
/** The time step for evolution in parabolic drivers */
double delta_t;
/** The internal number of timesteps for one iteration. */
double no_of_steps;
/** Value of the impulsion-energy tensor on the spheroid */
Sym_tensor Tij;
// Derived data :
// ------------
protected:
mutable Scalar* p_get_BC_conf_fact ; ///< Source of Neumann BC on \f$ \psi \f$, derived from the vanishing expansion
mutable Scalar* p_get_BC_bmN ; ///< Source of Dirichlet BC for (b-N).
mutable Scalar* p_get_BC_bpN ; ///< Arbitrary source of Dirichlet BC for (b+N), case 0: based on a parabolic driver towards a constant value, case 1:from a component of projected Einstein Equations. .
mutable Vector* p_get_BC_shift ; ///< Source of Dirichlet BC for the shift, issued from BC on bpN and a gauge condition on the tangential shift.
// Constructors - Destructor
// -------------------------
public:
/** Constructor of an excision surface embedded in a 3-slice (\c Time_slice ) of 3+1
* formalism.
* This is done from the \c Time_slice data.
* @param h_in : the location of the surface \e r = h_in (WARNING:must be
defined on a mono-domain angular grid)
* @param gij : the 3-metric on the 3-slice
* @param Kij : the extrinsic curvature of the 3-slice
* (covariant representation)
* @param timestep : time interval associated with the parabolic-driven boundary conditions.
* @param int_nos : Number of iterations to be done during timestep.
* @param Tij : Value of the impulsion-energy tensor on the spheroid
*/
Excision_hor(const Scalar& h_in, const Metric& gij, const Sym_tensor& Kij2, const Scalar& ppsi, const Scalar& nn, const Vector& beta,const Sym_tensor& Tij2, double timestep, int int_nos = 1) ;
Excision_hor(const Excision_hor& ) ; ///< Copy constructor
/// Constructor from a file (see \c sauve(FILE*) )
Excision_hor(FILE* ) ;
virtual ~Excision_hor() ; ///< Destructor
// Memory management
// -----------------
protected:
/// Deletes all the derived quantities
virtual void del_deriv() const ;
/// Sets to \c 0x0 all the pointers on derived quantities
void set_der_0x0() const ;
// Mutators / assignment
// ---------------------
public:
/// Assignment to another Excision_hor
void operator=(const Excision_hor&) ;
// Accessors
// ---------
public:
/// Returns the spheroid
const Spheroid& get_sph() const {return sph; };
/// Returns the conformal factor associated with the surface
const Scalar& get_conf_fact() const {return conf_fact; } ;
/// Returns the lapse function
const Scalar& get_lapse() const {return lapse ; } ;
/// Returns the shift vector field.
const Vector& get_shift() const {return shift ; } ;
/// Returns the symmetric tensor \f$ gamij \f$
const Metric& get_gamij() const {return gamij ; } ;
/// returns the 3-d extrinsic curvature \f$ K_{ij}\f$
const Sym_tensor& get_Kij() const {return Kij ; } ;
/// Returns the timestep used for evolution.
double get_delta_t() const {return delta_t ;};
/// Returns the internal number of timesteps for one iteration.
double get_no_of_steps() const {return no_of_steps ;};
/// Returns the value of the impulsion-energy tensor
const Sym_tensor& get_Tij() const{return Tij; } ;
/// Sets the value of the conformal factor
Scalar& set_conf_fact() {del_deriv() ; return conf_fact ; } ;
/// Sets the lapse function
Scalar& set_lapse() {del_deriv() ; return lapse ; } ;
/// Sets the shift vector field
Vector& set_shift() {del_deriv() ; return shift ; } ;
/// Sets the 3d metric of the TimeSlice
Metric& set_gamij() {del_deriv() ; return gamij ; } ;
/// Sets the extrinsic curvature
Sym_tensor& set_Kij() {del_deriv() ; return Kij ; } ;
/// Sets the value of the impulsion-energy tensor
Sym_tensor& set_Tij() {del_deriv() ; return Tij; } ;
double& set_delta_t() {del_deriv() ; return delta_t ; } ;
double& set_no_of_steps() {del_deriv() ; return no_of_steps ; } ;
// Computational functions
// -----------------------
public:
/// Source of Neumann BC on \f$ \psi \f$, derived from the vanishing expansion.
const Scalar& get_BC_conf_fact() const ;
/// Source of Dirichlet BC for (b-N): case 0: based on an entropy prescription, case 1: from a component of projected Einstein Equations.
const Scalar& get_BC_bmN(int choice_bmN, double value = 1.) const ;
///Case 0: Arbitrary source of Dirichlet BC for (b+N), based on a parabolic driver towards a constant value.
///Case 1: Source of Dirichlet BC for (b+N), from a component of projected Einstein Equations.
const Scalar& get_BC_bpN(int choice_bpN, double c_bpn_lap = 1., double c_bpn_fin = 1., Scalar *bpN_fin = 0x0) const ;
/// Source of Dirichlet BC for the shift, issued from BC on bpN and a gauge condition on the tangential shift (based on a parabolic driver).
const Vector& get_BC_shift(double c_V_lap) const ;
// Outputs
// -------
public:
virtual void sauve(FILE *) const ; ///< Save in a file
/// Display
friend ostream& operator<<(ostream& , const Spheroid& ) ;
};
ostream& operator<<(ostream& , const Spheroid& ) ;
}
#endif
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