Effects of the Grain Size on Dynamic Capillary Pressure and the Modified Green–Ampt Model for Infiltration

Figure 4

Wetting front depth of sand versus time: (a) B35, (b) B60, (c) B150, and (d) B320. The column length of sands B35, B60, and B150 was 60 cm and of sand B320 was 30 cm.