calc_zetaxstar

despasito.equations_of_state.saft.saft_toolbox.calc_zetaxstar

calc_zetaxstar(rho, Cmol2seg, xskl, sigmakl)[source]

Calculate matrix of hypothetical packing fraction based on sigma for groups (k,l)

Parameters:

  • rho (numpy.ndarray) – Number density of system [\(mol/m^3\)]

  • Cmol2seg (float) – Conversion factor from from molecular number density, \(\rho\), to segment (i.e. group) number density, \(\rho_S\). Shown in eq. 13

  • xskl (numpy.ndarray) – Matrix of mole fractions of bead (i.e. segment or group) k multiplied by bead l

  • sigmakl (numpy.ndarray) – Matrix of Mie diameter for groups (k,l)

Returns:

zetaxstar – Matrix of hypothetical packing fraction based on sigma for groups (k,l)

Return type:

numpy.ndarray