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

Table 2

Model parameters and RMSE of GAM and MGAM for downward infiltration simulation.

Materials	(cm)	GAM		MGAM
		(m)	RMSE	(m)			(×10^−4 cm)	RMSE
B35	10	0.011	0.007	0.105	86.138	0.305	425	0.004
	20	−0.009	0.011	0.094	93.316	0.297	456	0.008
	40	−0.052	0.009	0.09	100.741	0.283	442	0.006
B60	10	0.053	0.002	0.112	85.391	0.339	361	0.003
	20	0.025	0.005	0.133	98.828	0.3	351	0.002
	40	0.015	0.007	0.135	93.037	0.29	361	0.004
B150	10	0.134	0.008	0.326	97.797	0.288	138	0.003
	20	0.147	0.004	0.323	98.817	0.3	138	0.001
	40	0.099	0.006	0.31	98.585	0.291	137	0.002
B320	10	0.528	0.003	1.063	95.888	0.335	16	0.003
	20	0.467	0.002	1.007	97.124	0.335	17	0.004
	40	0.279	0.009	1.496	109.98	0.305	13	0.002