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Transport Properties

class cantera.Transport

Bases: cantera._cantera._SolutionBase

Transport(*args, **kwargs)

This class is used to compute transport properties for a phase of matter.

Not all transport properties are implemented in all transport models.

binary_diff_coeffs

Binary diffusion coefficients [m^2/s].

electrical_conductivity

Electrical conductivity. [S/m].

mix_diff_coeffs

Mixture-averaged diffusion coefficients [m^2/s] relating the mass-averaged diffusive fluxes (with respect to the mass averaged velocity) to gradients in the species mole fractions.

mix_diff_coeffs_mass

Mixture-averaged diffusion coefficients [m^2/s] relating the diffusive mass fluxes to gradients in the species mass fractions.

mix_diff_coeffs_mole

Mixture-averaged diffusion coefficients [m^2/s] relating the molar diffusive fluxes to gradients in the species mole fractions.

multi_diff_coeffs

Multicomponent diffusion coefficients [m^2/s].

thermal_conductivity

Thermal conductivity. [W/m/K].

thermal_diff_coeffs

Return a one-dimensional array of the species thermal diffusion coefficients [kg/m/s].

transport_model

Get/Set the transport model associated with this transport model.

Setting a new transport model deletes the underlying C++ Transport object and replaces it with a new one implementing the specified model.

viscosity

Viscosity [Pa-s].

class cantera.DustyGasTransport

Bases: cantera._cantera.Transport

DustyGasTransport(*args, **kwargs)

Implements the “dusty gas” model for transport in porous media.

As implemented here, only species transport (multi_diff_coeffs) is handled. The viscosity, thermal conductivity, and thermal diffusion coefficients are not implemented.

mean_particle_diameter

Mean particle diameter of the porous medium [m].

mean_pore_radius

Mean pore radius of the porous medium [m].

molar_fluxes(self, T1, T2, rho1, rho2, Y1, Y2, delta)

Get the molar fluxes [kmol/m^2/s], given the thermodynamic state at two nearby points.

Parameters:

• T1 – Temperature [K] at the first point
• T2 – Temperature [K] at the second point
• rho1 – Density [kg/m^3] at the first point
• rho2 – Density [kg/m^3] at the second point
• Y1 – Array of mass fractions at the first point. Length n_species.
• Y2 – Array of mass fractions at the second point. Length n_species.
• delta – Distance [m] between the two points.

permeability

Permeability of the porous medium [m^2].

porosity

Porosity of the porous medium [dimensionless].

tortuosity

Tortuosity of the porous medium [dimensionless].