7.6.20.12.22. Morris_Boulay

Syntax

Viscosity [{of} SpeciesName] = Morris_Boulay [K_S = K_s | Phi_Max = phi_max | Phi_Tol = phi_tol | Mu_S = mu_s]

Scope

Aria Material

Summary

A viscosity model for noncolloidal suspensions

$\mu(\phi) = \mu_s \left(1 + 2.5 \phi_{max} \left(1 - \bar{\phi} \right)^{-1} + K_s \bar{\phi}^2 \left(1 - \bar{\phi} \right)^{-2}\right),$

where $\phi$ is the volume fraction, $\bar{\phi} = \phi / \phi_{max}$ is the volume fraction normalized by the max volume fraction, $\mu_s$ is the suspending fluid viscosity, and $K_s$ is a model parameter. NOTE: $\bar{\phi}$ is bounded such that

$0 \leq \bar{\phi} \leq \frac{\phi_{tol}}{\phi_{max}},$

where $\phi_{tol}$ is the max attainable volume fraction.

Parameter	Value	Default
{of}	{of \| species \| subindex}	–
SpeciesName	string	–
K_s	real	–
phi_max	real	–
phi_tol	real	–
mu_s	real	–