This file contains definitions of constants, types and terms that are used in internal routines and are unlikely to need modifying. More...

#include "config.h"
#include <cmath>
#include <cstdlib>
#include <vector>
#include <map>
#include <set>
#include <string>
#include <algorithm>
#include <memory>
#include <functional>

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Detailed Description

This file contains definitions of constants, types and terms that are used in internal routines and are unlikely to need modifying.

All physical constants are stored here (see module Physical Constants).

This file is included in every file within the Cantera namespace.

Definition in file ct_defs.h.

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Namespaces
namespace	Cantera
	Namespace for the Cantera kernel.

Typedefs
typedef map< string, double >	Composition
	Map from string names to doubles.

Variables
const double	SmallNumber = 1.e-300
	smallest number to compare to zero.

const double	BigNumber = 1.e300
	largest number to compare to inf.

const double	Undef = -999.1234
	Fairly random number to be used to initialize variables against to see if they are subsequently defined.

const double	Tiny = 1.e-20
	Small number to compare differences of mole fractions against.

const size_t	npos = static_cast<size_t>(-1)
	index returned by functions to indicate "no position"

Numerical Constants
const double	Pi = 3.14159265358979323846
	Pi.

const double	Sqrt2 = 1.41421356237309504880
	Sqrt(2)

Defined Constants
These constants are defined by CODATA to have a particular value; see NIST Reference on Constants, Units, and Uncertainty.
const double	Avogadro = 6.02214076e26
	Avogadro's Number \( N_{\mathrm{A}} \) [number/kmol].

const double	Boltzmann = 1.380649e-23
	Boltzmann constant \( k \) [J/K].

const double	Planck = 6.62607015e-34
	Planck constant \( h \) [J-s].

const double	ElectronCharge = 1.602176634e-19
	Elementary charge \( e \) [C].

const double	lightSpeed = 299792458.0
	Speed of Light in a vacuum \( c \) [m/s].

const double	OneAtm = 1.01325e5
	One atmosphere [Pa].

const double	OneBar = 1.0E5
	One bar [Pa].

Measured Constants
These constants are measured and reported by CODATA
const double	fineStructureConstant = 7.2973525693e-3
	Fine structure constant \( \alpha \) [].

const double	ElectronMass = 9.1093837015e-31
	Electron Mass \( m_e \) [kg].

Derived Constants
These constants are found from the defined and measured constants
const double	GasConstant = Avogadro * Boltzmann
	Universal Gas Constant \( R_u \) [J/kmol/K].

const double	logGasConstant = std::log(GasConstant)

const double	GasConst_cal_mol_K = GasConstant / 4184.0
	Universal gas constant in cal/mol/K.

const double	StefanBoltz = 2.0 * std::pow(Pi, 5) * std::pow(Boltzmann, 4) / (15.0 * std::pow(Planck, 3) * lightSpeed * lightSpeed)
	Stefan-Boltzmann constant \( \sigma \) [W/m2/K4].

const double	Faraday = ElectronCharge * Avogadro
	Faraday constant \( F \) [C/kmol].

const double	permeability_0 = 2 * fineStructureConstant * Planck / (ElectronCharge * ElectronCharge * lightSpeed)
	Permeability of free space \( \mu_0 \) [N/A2].

const double	epsilon_0 = 1.0 / (lightSpeed * lightSpeed * permeability_0)
	Permittivity of free space \( \varepsilon_0 \) [F/m].

Thermodynamic Equilibrium Constraints
Integer numbers representing pairs of thermodynamic variables which are held constant during equilibration.
const int	TV = 100

const int	HP = 101

const int	SP = 102

const int	PV = 103

const int	TP = 104

const int	UV = 105

const int	ST = 106

const int	SV = 107

const int	UP = 108

const int	VH = 109

const int	TH = 110

const int	SH = 111

const int	PX = 112

const int	TX = 113

const int	VT = -100

const int	PH = -101

const int	PS = -102

const int	VP = -103

const int	PT = -104

const int	VU = -105

const int	TS = -106

const int	VS = -107

const int	PU = -108

const int	HV = -109

const int	HT = -110

const int	HS = -111

const int	XP = -112

const int	XT = -113

Detailed Description

Namespaces

Typedefs

Variables