Graham equation viscosity ratio
Input(s)
\(\emptyset\): Volume Fraction (dimensionless)
\(\Psi\): Stream Function (dimensionless)
Output(s)
\(\boldsymbol{\mu}_{\boldsymbol{r}}\): Graham Equation Viscosity Ratio (dimensionless)
Formula(s)
\[
\mu_{\mathrm{r}}=1+\frac{5}{2} * \emptyset+\frac{9}{4} *\left(\frac{1}{\Psi *(1+0.5 * \Psi) *(1+\Psi)^{2}}\right)
\]
Reference(s)
Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second ed.). John Wiley & Sons. Chapter: 1, Page: 33.