7.6.15.13.8. From_Species

Syntax: Porosity [{of} SpeciesName] = From_Species ()
Scope: Aria Material
Summary: Computes both the porosity and solid mass fraction. The solid mass fraction is computed using the concentrations of the condensed species, which is then used by the porosity
Description: Computes the normalized solid mass fraction $S_f$ as $S_f = \frac{1}{\rho_{b}}\sum_{i=1}^{n_{species}} C_{i}MW_{i}$ . Here, $C_{i}$ is species $i$ , $MW_{i}$ is the molecular weight of species $i$ and $\rho_{b}$ is the bulk density (given by the phase density). The gas volume fraction is then computed as $\phi = (1-S_f(1-\phi_o))$ , where $\phi_o$ is the initial gas volume fraction.

Parameter	Value	Default
{of}	{of \| species \| subindex}	–
SpeciesName	string	–