7.6.15.13.12. Modified_Kozeny

Syntax: Porosity [{of} SpeciesName] = Modified_Kozeny [C = c | B1 = b1 | B2 = b2 | L_Bed = L_bed | R_Bed = R_bed | Nx = nx]
Scope: Aria Material
Summary: Porosity of a cylindrical particle bed of domain of length $L$ and radius $R$ using experimental model parameters $c$ , $b1$ , $b2$ and $nx$ . For 2D $r=x$ and 3D $r=\sqrt{x^{2}+z^{2}}$ with $\bar{r}=r/R$ , $\bar{F1}=1-(1-b1)/2$ , $\bar{F2}=b2+(1-b2)/2$ , $F1=1-(1-b1) y / L$ , $F2=b2+(1-b2) (1-\bar{r}^{nx})$ , then the porosity $\phi=c F1 F2 / \bar{F1} \bar{F2}$ .