binary_xcts.C

/*
 * Methods of class Binary_xcts
 * (see file binary_xcts.h for documentation)
 */

/*
 *   Copyright (c) 2010 Michal Bejger
 *
 *   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
 *
 */

 

/*
 * $Id: binary_xcts.C,v 1.7 2016/12/05 16:17:47 j_novak Exp $
 * $Log: binary_xcts.C,v $
 * Revision 1.7  2016/12/05 16:17:47  j_novak
 * Suppression of some global variables (file names, loch, ...) to prevent redefinitions
 *
 * Revision 1.6  2014/10/13 08:52:45  j_novak
 * Lorene classes and functions now belong to the namespace Lorene.
 *
 * Revision 1.5  2014/10/06 15:12:59  j_novak
 * Modified #include directives to use c++ syntax.
 *
 * Revision 1.4  2010/12/20 09:56:02  m_bejger
 * Pointer to the linear momentum added
 *
 * Revision 1.3  2010/12/09 10:38:46  m_bejger
 * virial_vol() added, fait_decouple() removed
 *
 * Revision 1.2  2010/10/28 12:00:07  m_bejger
 * Mass-shedding indicators added to the output in Binary_xcts::write_global
 *
 * Revision 1.1  2010/05/04 07:35:54  m_bejger
 * Initial version
 *
 * $Header: /cvsroot/Lorene/C++/Source/Binary_xcts/binary_xcts.C,v 1.7 2016/12/05 16:17:47 j_novak Exp $
 *
 */
 
// Headers C
#include <cmath>

// Headers Lorene
#include "binary_xcts.h"
#include "eos.h"
#include "utilitaires.h"
#include "graphique.h"
#include "param.h"
#include "unites.h"     

                //--------------//
                // Constructors //
                //--------------//

// Standard constructor
// --------------------

namespace Lorene {
Binary_xcts::Binary_xcts(Map& mp1, 
                        int nzet1, 
                        const Eos& eos1, 
                        int irrot1, 
                        Map& mp2, 
                        int nzet2, 
                        const Eos& eos2, 
                        int irrot2) 
                 : star1(mp1, nzet1, eos1, irrot1), 
                   star2(mp2, nzet2, eos2, irrot2)
{

    et[0] = &star1 ; 
    et[1] = &star2 ; 
    
    omega = 0 ; 
    x_axe = 0 ; 

    // Pointers of derived quantities initialized to zero :
    set_der_0x0() ;
}

// Copy constructor
// ----------------
Binary_xcts::Binary_xcts(const Binary_xcts& bibi) 
        : star1(bibi.star1), 
          star2(bibi.star2),
          omega(bibi.omega), 
          x_axe(bibi.x_axe) 
{
    et[0] = &star1 ; 
    et[1] = &star2 ; 

    // Pointers of derived quantities initialized to zero :
    set_der_0x0() ;    
}

// Constructor from a file
// -----------------------
Binary_xcts::Binary_xcts(Map& mp1, 
                         const Eos& eos1, 
                         Map& mp2, 
                         const Eos& eos2, 
                         FILE* fich)
                        : star1(mp1, eos1, fich), 
                          star2(mp2, eos2, fich) 
{
    
    et[0] = &star1 ; 
    et[1] = &star2 ; 

    // omega and x_axe are read in the file:
    fread_be(&omega, sizeof(double), 1, fich) ;     
    fread_be(&x_axe, sizeof(double), 1, fich) ;     

    // Pointers of derived quantities initialized to zero : 
    set_der_0x0() ;    
    
}           

                //------------//
                // Destructor //
                //------- -----//

Binary_xcts::~Binary_xcts(){

    del_deriv() ; 

}

            //----------------------------------//
            // Management of derived quantities //
            //----------------------------------//

void Binary_xcts::del_deriv() const {

    if (p_mass_adm != 0x0) delete p_mass_adm ; 
    if (p_mass_kom != 0x0) delete p_mass_kom ; 
    if (p_angu_mom != 0x0) delete p_angu_mom ; 
    if (p_lin_mom  != 0x0) delete p_lin_mom ; 
    if (p_total_ener != 0x0) delete p_total_ener ; 
    if (p_virial != 0x0) delete p_virial ; 
    if (p_virial_vol != 0x0) delete p_virial_vol ; 
 
    set_der_0x0() ; 
}               




void Binary_xcts::set_der_0x0() const {

    p_mass_adm = 0x0 ; 
    p_mass_kom = 0x0 ; 
    p_angu_mom = 0x0 ; 
    p_lin_mom  = 0x0 ; 
    p_total_ener = 0x0 ; 
    p_virial = 0x0 ; 
    p_virial_vol = 0x0 ; 

}               


                //--------------//
                //  Assignment  //
                //--------------//

// Assignment to another Binary_xcts
// --------------------------------

void Binary_xcts::operator=(const Binary_xcts& bibi) {

    star1 = bibi.star1 ; 
    star2 = bibi.star2 ; 
    
    omega = bibi.omega ; 
    x_axe = bibi.x_axe ; 
    
    del_deriv() ;  // Deletes all derived quantities
    
}

                //--------------//
                //    Outputs   //
                //--------------//

// Save in a file
// --------------
void Binary_xcts::sauve(FILE* fich) const {
    
    star1.sauve(fich) ; 
    star2.sauve(fich) ; 
    
    fwrite_be(&omega, sizeof(double), 1, fich) ;        
    fwrite_be(&x_axe, sizeof(double), 1, fich) ;        
    
}

// Printing
// --------
ostream& operator<<(ostream& ost, const Binary_xcts& bibi)  {
    
    bibi >> ost ;
    return ost ;
}
    

ostream& Binary_xcts::operator>>(ostream& ost) const {

  using namespace Unites ;

    ost << endl ; 
    ost << "Binary neutron stars" << endl ; 
    ost << "=============" << endl ; 
    ost << endl << 
    "Orbital angular velocity : " << omega * f_unit << " rad/s" << endl ; 
    ost << endl << 
    "Coordinate separation between the two stellar centers : " 
    << separation() / km  << " km" << endl ; 
    ost << 
    "Absolute coordinate X of the rotation axis : " << x_axe / km 
        << " km" << endl ; 
    ost << endl << "Star 1 : " << endl ; 
    ost << "======   " << endl ; 
    ost << star1 << endl ; 
    ost << "Star 2 : " << endl ; 
    ost << "======   " << endl ; 
    ost << star2 << endl ; 
    return ost ;
}

// Display in polytropic units
// ---------------------------

void Binary_xcts::display_poly(ostream& ost) const {

  using namespace Unites ;

    const Eos* p_eos1 = &( star1.get_eos() ) ; 
    const Eos_poly* p_eos_poly = dynamic_cast<const Eos_poly*>( p_eos1 ) ;    

    if (p_eos_poly != 0x0) {

    assert( star1.get_eos() == star2.get_eos() ) ; 

    double kappa = p_eos_poly->get_kap() ; 
    double gamma = p_eos_poly->get_gam() ;  ; 
    double kap_ns2 = pow( kappa,  0.5 /(gamma-1) ) ; 
    
    // Polytropic unit of length in terms of r_unit : 
    double r_poly = kap_ns2 / sqrt(ggrav) ; 
    
    // Polytropic unit of time in terms of t_unit :
    double t_poly = r_poly ; 

    // Polytropic unit of mass in terms of m_unit :
    double m_poly = r_poly / ggrav ; 
    
    // Polytropic unit of angular momentum in terms of j_unit :
    double j_poly = r_poly * r_poly / ggrav ; 
    
    ost.precision(10) ; 
    ost << endl << "Quantities in polytropic units : " << endl ; 
    ost  << "==============================" << endl ; 
    ost << " ( r_poly = " << r_poly / km << " km )" << endl ; 
    ost << "  d_e_max   : " << separation() / r_poly << endl ; 
    ost << "  d_G       : " 
         << ( star2.xa_barycenter() - star1.xa_barycenter() ) / r_poly 
         << endl ; 
    ost << "  Omega   : " << omega * t_poly << endl ; 
    ost << "  J   : " << angu_mom()(2) / j_poly << endl ; 
    ost << "  M_ADM   : " << mass_adm() / m_poly << endl ;      
    ost << "  M_Komar : " << mass_kom() / m_poly << endl ; 
    ost << "  M_bar(star 1) : " << star1.mass_b() / m_poly << endl ; 
    ost << "  M_bar(star 2) : " << star2.mass_b() / m_poly << endl ; 
    ost << "  R_0(star 1)   : " << 
    0.5 * ( star1.ray_eq() + star1.ray_eq_pi() ) / r_poly << endl ;  
    ost << "  R_0(star 2)   : " << 
    0.5 * ( star2.ray_eq() + star2.ray_eq_pi() ) / r_poly << endl ;  
    
    }
    
} 

void Binary_xcts::write_global(ostream& ost) const {

  using namespace Unites ;

  const Map&  mp1 = star1.get_mp() ;
  const Mg3d* mg1 = mp1.get_mg() ;
  int nz1 = mg1->get_nzone() ;
 
  // Mass-shedding indicators 
  double dent1_eq   = (star1.ent).dsdr().val_point(star1.ray_eq(),M_PI/2.,0.) ;
  double dent1_pole = (star1.ent).dsdr().val_point(star1.ray_pole(),0.,0.) ;
  double chi1 = fabs( dent1_eq / dent1_pole ) ;

  double dent2_eq   = (star2.ent).dsdr().val_point(star2.ray_eq(),M_PI/2.,0.) ;
  double dent2_pole = (star2.ent).dsdr().val_point(star2.ray_pole(),0.,0.) ;
  double chi2 = fabs( dent2_eq / dent2_pole ) ;

  ost.precision(5) ;
  ost << "# Grid 1 : " << nz1 << "x"
      << mg1->get_nr(0) << "x" << mg1->get_nt(0) << "x" << mg1->get_np(0) 
      << "  R_out(l) [km] : " ;
  for (int l=0; l<nz1; l++) {
    ost << " " << mp1.val_r(l, 1., M_PI/2, 0) / km ; 
  }
  ost << endl ; 

  ost << "#     VE(M)          VE(M) [vol]" << endl ;
  
  
  ost.setf(ios::scientific) ; 
  ost.width(14) ; 
  ost << virial() << "       " << virial_vol() << endl ;
  
  ost << "#      d [km]         "  
      << "       d_G [km]       "
      << "     d/(a1 +a1')      "
      << "       f [Hz]         "
      << "    M_ADM [M_sol]     "     
      << "    M_ADM_vol [M_sol]     "     
      << "    M_Komar [M_sol]     "     
      << "    M_Komar_vol [M_sol]     "     
      << "   J [G M_sol^2/c]    "  << endl ;   
  
  ost.precision(14) ;
  ost.width(20) ; 
  ost << separation() / km ; ost.width(22) ;
  ost   << ( star2.xa_barycenter() - star1.xa_barycenter() ) / km ; ost.width(22) ;
  ost   << separation() / (star1.ray_eq() + star2.ray_eq()) ; ost.width(22) ;
  ost   << omega / (2*M_PI)* f_unit ; ost.width(22) ;
  ost   << mass_adm() / msol ; ost.width(22) ; 
  ost   << mass_adm_vol() / msol ; ost.width(22) ; 
  ost   << mass_kom() / msol ; ost.width(22) ; 
  ost   << mass_kom_vol() / msol ; ost.width(22) ; 
  ost   << angu_mom()(2)/ ( qpig / (4* M_PI) * msol*msol) << endl ; 
  
  ost   << "#     H_c(1)[c^2]     "
        << "    e_c(1)[rho_nuc]   " 
        << "    M_B(1) [M_sol]    "
        << "     r_eq(1) [km]     "
        << "        a2/a1(1)      "
        << "        a3/a1(1)      "  
        << "        chi1          " << endl ;   

  ost.width(20) ; 
  ost   << star1.get_ent().val_grid_point(0,0,0,0) ; ost.width(22) ;
  ost   << star1.get_ener().val_grid_point(0,0,0,0) ; ost.width(22) ;
  ost   << star1.mass_b() / msol ; ost.width(22) ;  
  ost   << star1.ray_eq() / km ; ost.width(22) ; 
  ost   << star1.ray_eq_pis2() / star1.ray_eq() ; ost.width(22) ;
  ost   << star1.ray_pole() / star1.ray_eq() ; ost.width(22) ; 
  ost   << chi1 << endl ;
  
  ost   << "#     H_c(2)[c^2]     "
        << "    e_c(2)[rho_nuc]   " 
        << "    M_B(2) [M_sol]    "
        << "     r_eq(2) [km]     "
        << "        a2/a1(2)      " 
        << "        a3/a1(2)      " 
        << "        chi2          " << endl ;
  

  ost.width(20) ; 
  ost << star2.get_ent().val_grid_point(0,0,0,0) ; ost.width(22) ;
  ost   << star2.get_ener().val_grid_point(0,0,0,0) ; ost.width(22) ;
  ost   << star2.mass_b() / msol ; ost.width(22) ;  
  ost << star2.ray_eq() / km ; ost.width(22) ; 
  ost   << star2.ray_eq_pis2() / star1.ray_eq() ; ost.width(22) ;
  ost   << star2.ray_pole() / star1.ray_eq() ; ost.width(22) ;
  ost   << chi2 << endl ;
  
  // Quantities in polytropic units if the EOS is a polytropic one
  // -------------------------------------------------------------
  const Eos* p_eos1 = &( star1.get_eos() ) ; 
  const Eos_poly* p_eos_poly = dynamic_cast<const Eos_poly*>( p_eos1 ) ;      
  
  if ((p_eos_poly != 0x0) && ( star1.get_eos() == star2.get_eos() )) {
      
      double kappa = p_eos_poly->get_kap() ; 
      double gamma = p_eos_poly->get_gam() ;  ; 
      double kap_ns2 = pow( kappa,  0.5 /(gamma-1.) ) ; 
      
      // Polytropic unit of length in terms of r_unit : 
      double r_poly = kap_ns2 / sqrt(ggrav) ; 
      
      // Polytropic unit of time in terms of t_unit :
      double t_poly = r_poly ; 
      
      // Polytropic unit of mass in terms of m_unit :
      double m_poly = r_poly / ggrav ; 
      
      // Polytropic unit of angular momentum in terms of j_unit :
      double j_poly = r_poly * r_poly / ggrav ; 
      
      ost << "#      d [poly]       "  
      << "       d_G [poly]     "
      << "     Omega [poly]     "
      << "     M_ADM [poly]     "     
      << "       J [poly]       "  
      << "    M_B(1) [poly]     "
      << "    M_B(2) [poly]     " << endl ; 
      
      ost.width(20) ; 
      ost << separation() / r_poly ; ost.width(22) ;
      ost << ( star2.xa_barycenter() - star1.xa_barycenter() ) / r_poly ; ost.width(22) ; 
      ost << omega * t_poly ; ost.width(22) ;
      ost << mass_adm() / m_poly ; ost.width(22) ;
      ost << angu_mom()(2) / j_poly ; ost.width(22) ;
      ost << star1.mass_b() / m_poly ; ost.width(22) ;
      ost << star2.mass_b() / m_poly << endl ; 
      
  }
  
}
   
            //-------------------------------//
            //      Miscellaneous            //
            //-------------------------------//

double Binary_xcts::separation() const {
    
    double dx = star1.mp.get_ori_x() - star2.mp.get_ori_x() ; 
    double dy = star1.mp.get_ori_y() - star2.mp.get_ori_y() ; 
    double dz = star1.mp.get_ori_z() - star2.mp.get_ori_z() ; 
    
    return sqrt( dx*dx + dy*dy + dz*dz ) ; 
    
}
}