- gas_mixture_hz(phase, mus='pore.viscosity.*', MWs='param.molecular_weight.*')#
Computes the viscosity of a gas mixture using the correlation in 
phase (OpenPNM Phase object) – The phase object to which this model is associated (i.e. attached). This controls the length of the calculated array(s), and also provides access to other necessary properties.
mus (str) –
MWs : str (dict key) or dict of numeric values for each species
mu – An ndarray of Np length containing the viscosity of the mixture in each pore
- Return type:
 Herning and Zipperer