Results 151 to 160 of about 502 (174)

Empirical formulas for dynamic effective suction head in the modified green-ampt model

Journal of Hydrology
Qun-Zhan Huang, Shao-Yiu Hsu, Chien-Hui Syu   +2 more
openaire   +3 more sources

Infiltration into Two-Layered Soil: The Green–Ampt and Averyanov Models Revisited

Transport in Porous Media, 2015
Infiltration into a two-layered soil (continuum scale) is studied by the Green–Ampt (GA) model where the rate of infiltration (wetting front propagation) is a non-monotonic and discontinuous function of time. Both a constant ponding depth and a ponding level falling due to evaporation and infiltration are studied theoretically and in column experiments.
Ali Al-Maktoumi, Anvar Kacimov, Said Al-Ismaily, Hamed Al-Busaidi, Said Al-Saqri   +4 more
openaire   +1 more source

Dynamic capillary pressure during water infiltration: Experiments and Green‐Ampt modeling

Water Resources Research, 2012
In a recent study by Hsu and Hilpert (2011), the Green‐Ampt (GA) model for water infiltration was modified to account for a dynamic capillary pressure that depends on the wetting front velocity. In that study, the only transient flow, to which the modified GA approach was compared, was capillary rise.
Emanuele Pellichero, Roland Glantz, Meghan Burns, Debjani Mallick, Shao‐Yiu Hsu, Markus Hilpert   +5 more
openaire   +1 more source

Derivation of the Relationships between Green-Ampt Model Parameters and Soil Hydraulic Properties

Soil Science Society of America Journal, 2015
The Green–Ampt model (GAM) is a widely used water infiltration model. However, it lacks a reliable theoretical basis to independently and simultaneously determine the GAM parameters of effective hydraulic conductivity (Kₑ) and the average matric pressure head at the wetting front (Hf) from those commonly measured soil hydraulic properties.
DongHao Ma, JiaBao Zhang, YunXuan Lu, Laosheng Wu, QuanJiu Wang   +4 more
openaire   +1 more source

APPLICATION OF THE GREEN‐AMPT INFILTRATION EQUATION TO WATERSHED MODELING¹

JAWRA Journal of the American Water Resources Association, 1992
ABSTRACT: A computer model was developed, based on the Green‐Ampt infiltration equation, to computed rainfall excess for a single precipitation event. The model requires an estimate of parameters related to hydraulic conductivity, wetting front section, and fillable porosity of the soil layers.
Wesley P. James, John Warinner, Michael Reedy   +2 more
openaire   +1 more source

Derivation of a two-term infiltration equation from the Green–Ampt model

Journal of Hydrology, 2000
Abstract For a uniform and infinitely deep soil at constant initial volumetric soil water content θn, the soil surface is subjected instantaneously to a ponded-water head that increases with the square root of time t1/2 after the initial ponding of water. An integration procedure is used in a rigorous derivation of the one-dimensional Green–Ampt flux
openaire   +1 more source

Rainfall runoff modelling with Green-Ampt infiltration process

2020
ABSTRACT RAINFALL RUNOFF MODELLING WITH GREEN-AMPT INFILTRATION PROCESS SAN, Övül Ph.D. in Civil Engineering Supervisor: Prof.Dr. Süha SEVÜK June, 1993, 272 pages In this study, a deterministic, event type rainfall runoff model is developed and the relation between rainfall, runoff is investigated.
openaire   +1 more source

Stochastic modeling of rainfall-runoff with green-ampt infiltration model

2020
Gary C.C. Chan, Yeou-Koung Tung
openaire   +1 more source

New Green-Ampt model based on fractional derivative and its application in 3D slope stability analysis

Journal of Hydrology, 2021
Shaohong Li
exaly  

Applicability of the Modified Green-Ampt Model Based on Suction Head Calculation in Water-Repellent Soil

Water (Switzerland), 2023
Youzhen Xiang, Xiang Youzhen
exaly