Cantera  3.1.0a1
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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 https://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
11namespace tpx
12{
13//! Pure species representation of heptane. Values and functions are
14//! from Reynolds @cite reynolds1979.
15class Heptane : public Substance
16{
17public:
18 Heptane() {
19 m_name = "heptane";
20 m_formula = "C7H16";
21 }
22
23 double MolWt() override;
24 double Tcrit() override;
25 double Pcrit() override;
26 double Vcrit() override;
27 double Tmin() override;
28 double Tmax() override;
29
30 //! Pressure. Equation P-2 in Reynolds.
31 double Pp() override;
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() override;
40
41 //! Entropy. See Reynolds eqn (16) section 2
42 double sp() override;
43
44 //! Pressure at Saturation. Equation S-2 in Reynolds.
45 double Psat() override;
46
47private:
48 //! liquid density. Equation D2 in Reynolds.
49 double ldens() override;
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:16
double Tmax() override
Maximum temperature for which the equation of state is valid.
Definition Heptane.cpp:254
double up() override
Internal energy.
Definition Heptane.cpp:150
double ldens() override
liquid density. Equation D2 in Reynolds.
Definition Heptane.cpp:221
double I(int i, double, double)
I = integral from o-rho { 1/(rho^2) * H(i, rho) d rho } ( see section 2 of Reynolds TPSI )
Definition Heptane.cpp:121
double Tmin() override
Minimum temperature for which the equation of state is valid.
Definition Heptane.cpp:250
double Tcrit() override
Critical temperature [K].
Definition Heptane.cpp:238
double sp() override
Entropy. See Reynolds eqn (16) section 2.
Definition Heptane.cpp:171
double Pp() override
Pressure. Equation P-2 in Reynolds.
Definition Heptane.cpp:191
double MolWt() override
Molecular weight [kg/kmol].
Definition Heptane.cpp:258
double H(int i, double egrho)
H returns a multiplier in each term of the sum in P-2.
Definition Heptane.cpp:137
double C(int jm, double, double, double, double)
C returns a multiplier in each term of the sum in P-2, used in conjunction with C in the function Pp.
Definition Heptane.cpp:79
double Vcrit() override
Critical specific volume [m^3/kg].
Definition Heptane.cpp:246
double Pcrit() override
Critical pressure [Pa].
Definition Heptane.cpp:242
double Psat() override
Pressure at Saturation. Equation S-2 in Reynolds.
Definition Heptane.cpp:206
double Cprime(int i, double, double, double)
derivative of C(i)
Definition Heptane.cpp:101
Base class from which all pure substances are derived.
Definition Sub.h:37