Cantera  2.3.0
Heptane.h
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1 //! @file Heptane.h
2
3 // This file is part of Cantera. See License.txt in the top-level directory or
4 // at http://www.cantera.org/license.txt for license and copyright information.
5
6 #ifndef TPX_HEPTANE_H
7 #define TPX_HEPTANE_H
8
9 #include "cantera/tpx/Sub.h"
10
11 namespace tpx
12 {
13 //! Pure species representation of heptane. Values and functions are
14 //! from "Thermodynamic Properties in SI" by W.C. Reynolds
15 class Heptane : public Substance
16 {
17 public:
18  Heptane() {
19  m_name = "Heptane";
20  m_formula = "C7H16";
21  }
22
23  double MolWt();
24  double Tcrit();
25  double Pcrit();
26  double Vcrit();
27  double Tmin();
28  double Tmax();
29
30  //! Pressure. Equation P-2 in Reynolds.
31  double Pp();
32
33  /*!
34  * internal energy.
35  * See Reynolds eqn (15) section 2
36  * u = (the integral from T to To of co(T)dT) +
37  * sum from i to N ([C(i) - T*Cprime(i)] + uo
38  */
39  double up();
40
41  //! Entropy. See Reynolds eqn (16) section 2
42  double sp();
43
44  //! Pressure at Saturation. Equation S-2 in Reynolds.
45  double Psat();
46
47 private:
48  //! liquid density. Equation D2 in Reynolds.
49  double ldens();
50
51  /*!
52  * C returns a multiplier in each term of the sum
53  * in P-2, used in conjunction with C in the function Pp
54  * - j is used to represent which of the values in the summation to calculate
55  * - j=0 is the second additive in the formula in reynolds
56  * - j=1 is the third...
57  */
58  double C(int jm, double, double, double, double);
59
60  //! derivative of C(i)
61  double Cprime(int i, double, double, double);
62
63  /*!
64  * I = integral from o-rho { 1/(rho^2) * H(i, rho) d rho }
65  * ( see section 2 of Reynolds TPSI )
66  */
67  double I(int i, double, double);
68
69  /*!
70  * H returns a multiplier in each term of the sum in P-2.
71  * this is used in conjunction with C in the function Pp
72  * this represents the product rho^n
73  * - i=0 is the second additive in the formula in reynolds
74  * - i=1 is the third ...
75  */
76  double H(int i, double egrho);
77 };
78
79 }
80
81 #endif // ! TPX_HEPTANE_H
Pure species representation of heptane.
Definition: Heptane.h:15
double Pcrit()
Critical pressure [Pa].
Definition: Heptane.cpp:242
double ldens()
liquid density. Equation D2 in Reynolds.
Definition: Heptane.cpp:221
double Tcrit()
Critical temperature [K].
Definition: Heptane.cpp:238
double sp()
Entropy. See Reynolds eqn (16) section 2.
Definition: Heptane.cpp:171
double C(int jm, double, double, double, double)
Definition: Heptane.cpp:79
double H(int i, double egrho)
Definition: Heptane.cpp:137
double Tmax()
Maximum temperature for which the equation of state is valid.
Definition: Heptane.cpp:254
double MolWt()
Molecular weight [kg/kmol].
Definition: Heptane.cpp:258
double Psat()
Pressure at Saturation. Equation S-2 in Reynolds.
Definition: Heptane.cpp:206
double up()
Definition: Heptane.cpp:150
double I(int i, double, double)
Definition: Heptane.cpp:121
double Cprime(int i, double, double, double)
derivative of C(i)
Definition: Heptane.cpp:101
double Tmin()
Minimum temperature for which the equation of state is valid.
Definition: Heptane.cpp:250
double Pp()
Pressure. Equation P-2 in Reynolds.
Definition: Heptane.cpp:191
double Vcrit()
Critical specific volume [m^3/kg].
Definition: Heptane.cpp:246