Smith and Nezbeda associated fluid model

The Smith and Nezbeda associated fluid model consists of a hard sphere that has an attractive square well patch. The potential is given by (Eq. 1)

$\mathrm{\Phi }({\mathbf{r}}_{ij})={\mathrm{\Phi }}_{HS}({\mathbf{r}}_{ij})+{\mathrm{\Phi }}_{CS}({\mathbf{r}}_{ij})+{\mathrm{\Phi }}_{SC}({\mathbf{r}}_{ij})$

where ${\displaystyle }$ (Eq. 2)

${\mathrm{\Phi }}_{CS}({\mathbf{r}}_{ij})=\{\begin{array}{ccc}0& ;& r_{CS}<0.5\\ -ϵ& ;& 0.5\le r_{CS}<\lambda \\ 0& ;& \lambda \le r_{CS}\end{array}$

See also

• Kern and Frenkel patchy model
• PMW model of water