- chapman_enskog(target, MA, MB, sigma_AB, omega_AB, temperature='pore.temperature', pressure='pore.pressure')#
Calculate gas phase diffusion coefficient using Chapman-Enskog equation.
target (OpenPNM Base object) – Object with which this model is associated. This controls the length of the calculated array, and also provides access to other necessary properties.
MA (scalar) – The molecular mass of species A and B in units of kg/mol
MB (scalar) – The molecular mass of species A and B in units of kg/mol
sigma_AB (scalar) – The collision diameter in units of Angstroms
omega_AB (scalar) – The collision integral
temperature (str) – Name of the dictionary key on
targetwhere the array containing temperature values is stored
pressure (str) – Name of the dictionary key on
targetwhere the array containing pressure values is stored
diffusivities – A numpy ndarray containing diffusion coefficient values [m2/s].
- Return type