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/*
* Methods for computing global quantities within the class Et_rot_diff
*
* (see file et_rot_diff.h for documentation)
*/
/*
* Copyright (c) 2001 Eric Gourgoulhon
*
* 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 as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 et_rot_diff_global_C[] = "$Header: /cvsroot/Lorene/C++/Source/Etoile/et_rot_diff_global.C,v 1.4 2014/10/13 08:52:57 j_novak Exp $" ;
/*
* $Id: et_rot_diff_global.C,v 1.4 2014/10/13 08:52:57 j_novak Exp $
* $Log: et_rot_diff_global.C,v $
* Revision 1.4 2014/10/13 08:52:57 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.3 2014/10/06 15:13:08 j_novak
* Modified #include directives to use c++ syntax.
*
* Revision 1.2 2003/12/19 16:21:42 j_novak
* Shadow hunt
*
* Revision 1.1.1.1 2001/11/20 15:19:28 e_gourgoulhon
* LORENE
*
* Revision 1.2 2001/10/24 16:06:53 eric
* fonction tsw(): correction erreur ener. cin. (facteur 0.5).
*
* Revision 1.1 2001/10/19 08:18:30 eric
* Initial revision
*
*
* $Header: /cvsroot/Lorene/C++/Source/Etoile/et_rot_diff_global.C,v 1.4 2014/10/13 08:52:57 j_novak Exp $
*
*/
// Headers C
#include <cmath>
// Headers Lorene
#include "et_rot_diff.h"
//----------------------------//
// T/W //
//----------------------------//
namespace Lorene {
double Et_rot_diff::tsw() const {
if (p_tsw == 0x0) { // a new computation is required
Cmp dens = uuu() ;
dens.mult_r() ; // Multiplication by
dens.va = (dens.va).mult_st() ; // r sin(theta)
if (relativistic) {
dens = omega_field() * a_car() * b_car() * (ener_euler() + press())
* dens ;
}
else { // Newtonian case
dens = omega_field() * nbar() * dens ;
}
dens.std_base_scal() ;
double tcin = 0.5 * dens.integrale() ;
if (relativistic) {
Cmp dens2 = a_car() * bbb() * gam_euler() * ener() ;
dens2.std_base_scal() ;
double mass_p = dens2.integrale() ;
p_tsw = new double( tcin / ( mass_p + tcin - mass_g() ) ) ;
}
else { // Newtonian case
Cmp dens2 = 0.5 * nbar() * logn() ;
dens2.std_base_scal() ;
double wgrav = dens2.integrale() ;
p_tsw = new double( tcin / fabs(wgrav) ) ;
}
}
return *p_tsw ;
}
}
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