Figure 5

Comparison of numerical and approximate solutions for fine and coarse grinds. Comparison of numerical (-  -) and composite (—) solutions for (a) \(c_{h}(t)\) (experimental data points are included), (b) \(c_{v}(t)\) and (c) \(\psi_{s}(t)\) for \(\epsilon= 0.028\), \(b_{1} = 5.239\), \(b_{2} =2.897\) and \(\gamma_{1}=0.70\) (JK drip filter grind). Plots (d), (e) and (f) show the corresponding results for \(\epsilon= 0.071\), \(b_{1} = 1.99\), \(b_{2} =1.35\) and \(\gamma_{1}=0.5\) (Cimbali #20 grind).