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/*
* Virtual methods of class Time_slice and derived classes to
* compute the ADM mass
*
* (see file time_slice.h for documentation).
*
*/
/*
* Copyright (c) 2004 Eric Gourgoulhon & Jerome Novak
*
* 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
*
*/
char tslice_adm_mass_C[] = "$Header: /cvsroot/Lorene/C++/Source/Time_slice/tslice_adm_mass.C,v 1.7 2014/10/13 08:53:47 j_novak Exp $" ;
/*
* $Id: tslice_adm_mass.C,v 1.7 2014/10/13 08:53:47 j_novak Exp $
* $Log: tslice_adm_mass.C,v $
* Revision 1.7 2014/10/13 08:53:47 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.6 2014/10/06 15:13:21 j_novak
* Modified #include directives to use c++ syntax.
*
* Revision 1.5 2010/10/20 07:58:09 j_novak
* Better implementation of the explicit time-integration. Not fully-tested yet.
*
* Revision 1.4 2008/12/04 19:36:40 j_novak
* Removed old tests.
*
* Revision 1.3 2004/05/12 15:24:20 e_gourgoulhon
* Reorganized the #include 's, taking into account that
* time_slice.h contains now an #include "metric.h".
*
* Revision 1.2 2004/05/10 09:11:20 e_gourgoulhon
* Corrected bug in Time_slice::adm_mass().
* Reorganized outputs.
*
* Revision 1.1 2004/05/09 20:56:29 e_gourgoulhon
* First version.
*
*
* $Header: /cvsroot/Lorene/C++/Source/Time_slice/tslice_adm_mass.C,v 1.7 2014/10/13 08:53:47 j_novak Exp $
*
*/
// C headers
#include <cmath>
// Lorene headers
#include "time_slice.h"
//--------------------
// Time_slice version
//--------------------
namespace Lorene {
double Time_slice::adm_mass() const {
if ( !(adm_mass_evol).is_known(jtime) ) { // a new computation is necessary
const Map& mp = gam_dd().get_mp() ;
Metric_flat ff(mp, *(gam_dd().get_triad())) ;
int nz = mp.get_mg()->get_nzone() ;
Tbl* tmass = new Tbl(nz) ;
tmass->set_etat_qcq() ;
Vector ww = gam_dd().derive_con(ff).trace(1,2).up(0,ff)
- gam_dd().trace(ff).derive_con(ff) ;
for (int l=0; l<nz; l++) {
double radius = mp.val_r(l, 1., 0., 0.) ;
tmass->set(l) = ww.flux(radius, ff) / (16.* M_PI) ;
}
adm_mass_evol.update(*tmass, jtime, the_time[jtime]) ;
delete tmass ;
cout << "Time_slice::adm_mass : " << adm_mass_evol[jtime] << endl ;
}
const Tbl& tadm = adm_mass_evol[jtime] ;
return tadm(tadm.get_taille()-1) ;
}
//--------------------------
// Time_slice_conf version
//--------------------------
double Time_slice_conf::adm_mass() const {
if ( !(adm_mass_evol).is_known(jtime) ) { // a new computation is necessary
const Map& mp = psi().get_mp() ;
int nz = mp.get_mg()->get_nzone() ;
Tbl* tmass = new Tbl(nz) ;
tmass->set_etat_qcq() ;
Vector ww = psi().derive_con(ff)
+ 0.125* ( hdirac() - (hh().trace(ff)).derive_con(ff) ) ;
for (int l=0; l<nz; l++) {
double radius = mp.val_r(l, 1., 0., 0.) ;
tmass->set(l) = - ww.flux(radius, ff) / (2.* M_PI) ;
}
adm_mass_evol.update(*tmass, jtime, the_time[jtime]) ;
delete tmass ;
#ifndef NDEBUG
cout << "Time_slice_conf::adm_mass : " << adm_mass_evol[jtime] << endl ;
#endif
}
const Tbl& tadm = adm_mass_evol[jtime] ;
return tadm(tadm.get_taille()-1) ;
}
//--------------------------
// Tslice_dirac_max version
//--------------------------
double Tslice_dirac_max::adm_mass() const {
if ( !(adm_mass_evol).is_known(jtime) ) { // a new computation is necessary
const Map& mp = psi().get_mp() ;
int nz = mp.get_mg()->get_nzone() ;
Tbl* tmass = new Tbl(nz) ;
tmass->set_etat_qcq() ;
Vector ww = psi().derive_con(ff)
- 0.125* (hh().trace(ff)).derive_con(ff) ;
// trh() is not used since it has dzpuis = 4
for (int l=0; l<nz; l++) {
double radius = mp.val_r(l, 1., 0., 0.) ;
tmass->set(l) = - ww.flux(radius, ff) / (2.* M_PI) ;
}
adm_mass_evol.update(*tmass, jtime, the_time[jtime]) ;
delete tmass ;
#ifndef NDEBUG
cout << "Tslice_dirac_max::adm_mass : " << adm_mass_evol[jtime]
<< endl ;
#endif
}
const Tbl& tadm = adm_mass_evol[jtime] ;
return tadm(tadm.get_taille()-1) ;
}
}
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