gaspype.fluid_system#

class gaspype.fluid_system(species, t_min=250, t_max=2000, backend='numpy', device=None)#

A class to represent a fluid_system defined by a set of selected species.

species#

List of selected species in the fluid_system

elements#

List of the elements of the species

array_molar_mass#

Array of the molar masses of the species in the fluid_system

array_species_elements#

Array of the element composition of the species in the fluid_system. Dimension is: (number of species, number of elements)

array_atomic_mass#

Array of the atomic masses of the elements in the fluid_system

array_stoichiometric_coefficients#

Array of the stoichiometric coefficients of a minimal set of reactions between the species. Dimension is: (number of reactions, number of species)

np#

Array namespace of the backend, used for all arrays and calculations of the fluid_system and of the fluids and elements based on it

device#

JAX device of the arrays or None for the default device

Instantiates a fluid_system.

Parameters:

species (list[str] | str) – List of species names to be available in the constructed fluid_system (as list of strings or a comma separated string)
t_min (int) – Lower bound of the required temperature range in Kelvin
t_max (int) – Upper bound of the required temperature range in Kelvin
backend (str | ModuleType) – Array library used for the fluid_system and for all fluids and elements based on it: ‘numpy’, ‘jax’ or the module of a NumPy compatible array library (e.g. jax.numpy)
device (Optional[Any]) – Optional device for the JAX backend: A JAX device or a string like ‘cpu’, ‘gpu’ or ‘gpu:1’

get_species_cp(t)#

Get the isobaric molar heat capacity for all species in the fluid system

Parameters:: t (float | ndarray[tuple[int, ...], dtype[float64]]) – Temperature in Kelvin (can be an array)
Return type:: ndarray[tuple[int, ...], dtype[float64]]
Returns:: Array with the heat capacities of each specie in J/mol/K

get_species_g_rt(t)#

Get specific gibbs free energy divided by RT for all species in the fluid system (g/R/T == (h/T-s)/R )

Parameters:: t (float | ndarray[tuple[int, ...], dtype[float64]]) – Temperature in Kelvin (can be an array)
Return type:: ndarray[tuple[int, ...], dtype[float64]]
Returns:: Array of gibbs free energy divided by RT (dimensionless)

get_species_h(t)#

Get the molar enthalpies for all species in the fluid system

Parameters:: t (float | ndarray[tuple[int, ...], dtype[float64]]) – Temperature in Kelvin (can be an array)
Return type:: ndarray[tuple[int, ...], dtype[float64]]
Returns:: Array with the enthalpies of each specie in J/mol

get_species_references()#

Get a string with the references for all fluids of the fluid system

get_species_s(t)#

Get the molar entropies for all species in the fluid system

Parameters:: t (float | ndarray[tuple[int, ...], dtype[float64]]) – Temperature in Kelvin (can be an array)
Return type:: ndarray[tuple[int, ...], dtype[float64]]
Returns:: Array with the entropies of each specie in J/mol/K