Parameterization of a comprehensive explicit model for single-ring infiltration

Comprehensive infiltration models can simultaneously describe transient and steady-state behaviors, therefore be applied to a range of experimental conditions. However, satisfactory model accuracy requires proper parameterization, including estimating the transition time from flow conditions (?crit). This study focused on improving estimation two parameters – ?crit second constant called used in comprehensive, explicit, two-term for single ring (hereafter referred as SA model). Different studies have recommended that should low 0.45 high 0.91. Furthermore, is often obtained a-priori by assuming are reached before end an run. there has not been systematic analysis those terms different soils To investigate these open issues related use model, here we introduce novel, iterative method parameter a. We then this both analytical data, compared it with existing empirical methods. The experiments showed was approximately 1.5 times larger than maximum validity similar model. Further, obtaining had minimal effects term, which varied between 0.706 0.904 finer when small water sources were used. Application proposed less efficient data. Only ~ 33% yielding plausible estimates (i.e., < 1), indicating uncertainty. successful runs indicated depended rate at initial approached final rate. Depending fitting algorithm used, mean values 0.74–0.78, intermediate suggested previous studies. Altogether, findings expand applicability providing new methods showing does need fixed a-priori. expect advances will result more reliable estimations soil hydrodynamic parameters, hydraulic conductivity.