Figure 2.

Effective diffusion constants found numerically (circles) and predicted by Eqs. 1, 8, 9, 10 (solid curves). The inset shows the ratio of $D_{\mathrm{eff}}^{\mathrm{BZS}}$ and $D_{\mathrm{eff}}^{\mathrm{RR}}$ predicted by Eqs. 1, 10, respectively, to $D_{\mathrm{eff}}^{\mathrm{sim}}$ from (a∕R)=0.025 to (a∕R)=0.3.