Common classes#

Here we can find the documentation for the common functions and classes implemented in the Combustion Toolbox (CT).

Constants#

class Constants#

Bases: handle

Class with constants data

R0#

Universal gas constant [J/(K mol)]

Type:

float

G#

Standard gravity [m/s2]

Type:

float

NA#

Avogadro’s number [molecule/mol]

Type:

float

release#

Release of the Combustion Toolbox

Type:

char

date#

Date of the release

Type:

char

Examples

  • R0 = Constants.R0

  • g = Constants.G

  • release = Constants.release

G = '9.80665'

Standard gravity [m/s2]

NA = '6.0221415e23'

Avogadro’s number [molecule/mol]

R0 = '8.31446261815324'

Universal gas constant [J/(K mol)]

date = "'03 Sep 2024'"

Release date

release = "'v1.1.0'"

Release version

Units#

class Units#

Bases: handle

Class with conversion factors between different units

Pa2atm = '101325^-1'#

Conversion factor from Pa to atm

Pa2bar = '1e-5'#

Conversion factor from Pa to bar

atm2Pa = '101325'#

Conversion factor from atm to Pa

atm2bar = '1.01325'#

Pressure

bar2Pa = '1e5'#

Conversion factor from bar to Pa

bar2atm = '1.01325^-1'#

Conversion factor from bar to atm

static convert(value_in, unit_in, unit_out)#

Convert a value from one unit to another

Parameters:

  • value_in (double) – Value to convert

  • unit_in (char) – Unit of the input value

  • unit_out (char) – Unit of the output value

Returns:

value_out – Value converted to the output unit

Example

Units.convert(1, ‘atm’, ‘bar’)

static convertWeightPercentage2moles(listSpecies, weightPercentage, database)#

Convert weight percentage (wt%) to moles

Parameters:

  • listSpecies (cell) – List of species

  • weightPercentage (float) – Weight percentage of the species [%]

  • database (Database) – Database with custom thermodynamic polynomials functions generated from NASAs 9 polynomials fits

Returns:

moles (float) – Number of moles [mol]

Example

moles = Units.WeightPercentage2moles({‘H2O’, ‘CO2’}, [50, 50], database)