LORENE
eos_poly_newt.C
1 /*
2  * Methods of the class Eos_poly_newt.
3  *
4  * (see file eos.h for documentation).
5  */
6 
7 /*
8  * Copyright (c) 2000-2001 Eric Gourgoulhon
9  *
10  * This file is part of LORENE.
11  *
12  * LORENE is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License as published by
14  * the Free Software Foundation; either version 2 of the License, or
15  * (at your option) any later version.
16  *
17  * LORENE is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with LORENE; if not, write to the Free Software
24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25  *
26  */
27 
28 
29 
30 
31 /*
32  * $Id: eos_poly_newt.C,v 1.6 2016/12/05 16:17:51 j_novak Exp $
33  * $Log: eos_poly_newt.C,v $
34  * Revision 1.6 2016/12/05 16:17:51 j_novak
35  * Suppression of some global variables (file names, loch, ...) to prevent redefinitions
36  *
37  * Revision 1.5 2014/10/13 08:52:53 j_novak
38  * Lorene classes and functions now belong to the namespace Lorene.
39  *
40  * Revision 1.4 2014/10/06 15:13:06 j_novak
41  * Modified #include directives to use c++ syntax.
42  *
43  * Revision 1.3 2002/10/16 14:36:35 j_novak
44  * Reorganization of #include instructions of standard C++, in order to
45  * use experimental version 3 of gcc.
46  *
47  * Revision 1.2 2002/04/09 14:32:15 e_gourgoulhon
48  * 1/ Added extra parameters in EOS computational functions (argument par)
49  * 2/ New class MEos for multi-domain EOS
50  *
51  * Revision 1.1.1.1 2001/11/20 15:19:27 e_gourgoulhon
52  * LORENE
53  *
54  * Revision 2.5 2001/02/23 15:16:51 eric
55  * Continuite en ent=0 des quantites derivees.
56  *
57  * Revision 2.4 2001/02/07 09:50:11 eric
58  * Suppression de la fonction derent_ent_p.
59  * Ajout des fonctions donnant les derivees de l'EOS:
60  * der_nbar_ent_p
61  * der_ener_ent_p
62  * der_press_ent_p
63  *
64  * Revision 2.3 2000/02/14 14:49:41 eric
65  * Modif affichage.
66  *
67  * Revision 2.2 2000/02/14 14:33:33 eric
68  * Ajout du constructeur par lecture de fichier formate.
69  *
70  * Revision 2.1 2000/01/21 15:18:56 eric
71  * Ajout des operateurs de comparaison == et !=
72  *
73  * Revision 2.0 2000/01/18 15:14:12 eric
74  * *** empty log message ***
75  *
76  *
77  * $Header: /cvsroot/Lorene/C++/Source/Eos/eos_poly_newt.C,v 1.6 2016/12/05 16:17:51 j_novak Exp $
78  *
79  */
80 
81 // Headers C
82 #include <cstdlib>
83 #include <cstring>
84 #include <cmath>
85 
86 // Headers Lorene
87 #include "eos.h"
88 #include "cmp.h"
89 
90  //--------------//
91  // Constructors //
92  //--------------//
93 
94 // Standard constructor
95 // --------------------
96 namespace Lorene {
97 Eos_poly_newt::Eos_poly_newt(double gamma, double kappa) :
98  Eos_poly(gamma, kappa) {
99 
100  set_name("Newtonian polytropic EOS") ;
101 
102 }
103 
104 
105 // Copy constructor
106 // ----------------
108 
109 
110 // Constructor from a binary file
111 // ------------------------------
113 
114 // Constructor from a formatted file
115 // ---------------------------------
116 Eos_poly_newt::Eos_poly_newt(ifstream& fich) : Eos_poly(fich) {}
117 
118 
119  //--------------//
120  // Destructor //
121  //--------------//
122 
124 
125  // does nothing
126 
127 }
128  //--------------//
129  // Assignment //
130  //--------------//
131 
133 
134  set_name(eosi.name) ;
135 
136  gam = eosi.gam ;
137  kap = eosi.kap ;
138  m_0 = eosi.m_0 ;
139 
140  set_auxiliary() ;
141 
142 }
143  //------------------------//
144  // Comparison operators //
145  //------------------------//
146 
147 bool Eos_poly_newt::operator==(const Eos& eos_i) const {
148 
149  bool resu = true ;
150 
151  if ( eos_i.identify() != identify() ) {
152  cout << "The second EOS is not of type Eos_poly_newt !" << endl ;
153  resu = false ;
154  }
155  else{
156 
157  const Eos_poly_newt& eos = dynamic_cast<const Eos_poly_newt&>( eos_i ) ;
158 
159  if (eos.gam != gam) {
160  cout
161  << "The two Eos_poly_newt have different gamma : " << gam << " <-> "
162  << eos.gam << endl ;
163  resu = false ;
164  }
165 
166  if (eos.kap != kap) {
167  cout
168  << "The two Eos_poly_newt have different kappa : " << kap << " <-> "
169  << eos.kap << endl ;
170  resu = false ;
171  }
172 
173  if (eos.m_0 != m_0) {
174  cout
175  << "The two Eos_poly_newt have different m_0 : " << m_0 << " <-> "
176  << eos.m_0 << endl ;
177  resu = false ;
178  }
179 
180  }
181 
182  return resu ;
183 
184 }
185 
186 bool Eos_poly_newt::operator!=(const Eos& eos_i) const {
187 
188  return !(operator==(eos_i)) ;
189 
190 }
191 
192 
193  //------------//
194  // Outputs //
195  //------------//
196 
197 void Eos_poly_newt::sauve(FILE* fich) const {
198 
199  Eos_poly::sauve(fich) ;
200 
201 }
202 
203 ostream& Eos_poly_newt::operator>>(ostream & ost) const {
204 
205  ost << "EOS of class Eos_poly_newt (Newtonian polytrope) : " << endl ;
206  ost << " Adiabatic index gamma : " << gam << endl ;
207  ost << " Pressure coefficient kappa : " << kap <<
208  " rho_nuc c^2 / n_nuc^gamma" << endl ;
209 
210  return ost ;
211 
212 }
213 
214 
215  //------------------------------//
216  // Computational routines //
217  //------------------------------//
218 
219 // Baryon density from enthalpy
220 //------------------------------
221 
222 double Eos_poly_newt::nbar_ent_p(double ent, const Param* ) const {
223 
224  if ( ent > double(0) ) {
225 
226  return pow( gam1sgamkap * ent, unsgam1 ) ;
227  }
228  else{
229  return 0 ;
230  }
231 }
232 
233 // Energy density from enthalpy
234 //------------------------------
235 
236 double Eos_poly_newt::ener_ent_p(double ent, const Param* ) const {
237 
238  if ( ent > double(0) ) {
239 
240  double nn = pow( gam1sgamkap * ent, unsgam1 ) ;
241 
242  double pp = kap * pow( nn, gam ) ;
243 
244  return unsgam1 * pp + m_0 * nn ;
245  }
246  else{
247  return 0 ;
248  }
249 }
250 
251 // Pressure from enthalpy
252 //------------------------
253 
254 double Eos_poly_newt::press_ent_p(double ent, const Param* ) const {
255 
256  if ( ent > double(0) ) {
257 
258  double nn = pow( gam1sgamkap * ent, unsgam1 ) ;
259 
260  return kap * pow( nn, gam ) ;
261 
262  }
263  else{
264  return 0 ;
265  }
266 }
267 
268 // dln(n)/ln(h) from enthalpy
269 //---------------------------
270 
271 double Eos_poly_newt::der_nbar_ent_p(double , const Param* ) const {
272 
273  return double(1) / gam1 ;
274 
275 }
276 
277 // dln(e)/ln(h) from enthalpy
278 //---------------------------
279 
280 double Eos_poly_newt::der_ener_ent_p(double ent, const Param* ) const {
281 
282  if ( ent > double(0) ) {
283 
284 
285  double nn = pow( gam1sgamkap * ( exp(ent) - double(1) ),
286  unsgam1 ) ;
287 
288  double pp = kap * pow( nn, gam ) ;
289 
290  double ee = unsgam1 * pp + m_0 * nn ;
291 
292 
293  return ( double(1) + pp / ee) / gam1 ;
294 
295  }
296  else{
297  return double(1) / gam1 ; // to ensure continuity at ent=0
298  }
299 }
300 
301 // dln(p)/ln(h) from enthalpy
302 //---------------------------
303 
304 double Eos_poly_newt::der_press_ent_p(double, const Param* ) const {
305 
306  return gam / gam1 ;
307 
308 }
309 
310 }
virtual ostream & operator>>(ostream &) const
Operator >>
virtual bool operator==(const Eos &) const
Comparison operator (egality)
double unsgam1
Definition: eos.h:842
Cmp exp(const Cmp &)
Exponential.
Definition: cmp_math.C:273
void operator=(const Eos_poly_newt &)
Assignment to another Eos_poly_newt.
virtual int identify() const
Returns a number to identify the sub-classe of Eos the object belongs to.
virtual double press_ent_p(double ent, const Param *par=0x0) const
Computes the pressure from the specific enthalpy.
Lorene prototypes.
Definition: app_hor.h:67
Equation of state base class.
Definition: eos.h:209
virtual int identify() const =0
Returns a number to identify the sub-classe of Eos the object belongs to.
virtual double der_ener_ent_p(double ent, const Param *par=0x0) const
Computes the logarithmic derivative from the specific enthalpy.
double kap
Pressure coefficient (cf.
Definition: eos.h:826
double gam1sgamkap
Definition: eos.h:843
double gam1
Definition: eos.h:841
virtual bool operator!=(const Eos &) const
Comparison operator (difference)
double m_0
Individual particule mass (cf.
Definition: eos.h:831
void set_auxiliary()
Computes the auxiliary quantities gam1 , unsgam1 , gam1sgamkap from the values of gam and kap...
Definition: eos_poly.C:257
Parameter storage.
Definition: param.h:125
Polytropic equation of state (relativistic case).
Definition: eos.h:812
virtual void sauve(FILE *) const
Save in a file.
Definition: eos_poly.C:350
Cmp pow(const Cmp &, int)
Power .
Definition: cmp_math.C:351
virtual double der_nbar_ent_p(double ent, const Param *par=0x0) const
Computes the logarithmic derivative from the specific enthalpy.
Polytropic equation of state (Newtonian case).
Definition: eos.h:1110
double gam
Adiabatic index (cf. Eq. (3))
Definition: eos.h:819
void set_name(const char *name_i)
Sets the EOS name.
Definition: eos.C:173
virtual double der_press_ent_p(double ent, const Param *par=0x0) const
Computes the logarithmic derivative from the specific enthalpy.
char name[100]
EOS name.
Definition: eos.h:215
virtual ~Eos_poly_newt()
Destructor.
virtual double ener_ent_p(double ent, const Param *par=0x0) const
Computes the total energy density from the specific enthalpy.
virtual double nbar_ent_p(double ent, const Param *par=0x0) const
Computes the baryon density from the specific enthalpy.
Eos_poly_newt(double gamma, double kappa)
Standard constructor.
Definition: eos_poly_newt.C:97
virtual void sauve(FILE *) const
Save in a file.