Results 21 to 30 of about 507 (178)

A modified Green–Ampt model for water infiltration and preferential flow [PDF]

Hydrology Research, 2016
Preferential flow is significant for its contribution to rapid response to hydrologic inputs at the soil surface and unsaturated zone flow, which is critical for flow generation in rainfall–runoff (RR) models. In combination with the diffuse and source-responsive flow equations, a new model for water infiltration that incorporates preferential flow is ...
David E. Rheinheimer, Pan Liu, Shenglian Guo, Yao Xu, Dedi Liu   +4 more
openaire   +1 more source

DIFFERENT APPROACHES TO ESTIMATE THE SUCTION HEAD AT THE WET FRONT IN THE GREEN AND AMPT WATER INFILTRATION EQUATION

Journal of Engineering, 2005
This study was conducted to estimate the suction head at the wetting front T in the Green and Ampt infiltration equation using uniformly packed soil columns of three different - textured soils.
Mahdi I. Aoda, Abbas H. Thiab, Nameer T. Mahdi   +2 more
doaj   +1 more source

Improved Green-Ampt infiltration model of soil slope considering inclination

Shuili Shuiyun Gongcheng Xuebao, 2020
In view of the fact that the traditional Green-Ampt infiltration model ignores the influence of slope angle and unsaturated zone of soil on the rainfall infiltration of slope, the gradient of infiltration potential energy of soil was modified by using ...
LEI Wenkai, DONG Hongyuan, CHEN Pan, LÜ Haibo, MEI Guoxiong   +4 more
doaj   +1 more source

Evaluation of different infiltration models under long term conservation agricultural practices

The Indian Journal of Agricultural Sciences, 2021
A study was undertaken to evaluate the long term effect of different conservation agriculture (CA) practices on infiltration characteristics of soil and empirical Kostiakov model and physical process based Green and Ampt, and Philip models were used to ...
TRIDIV GHOSH, PRAGATI PRAMANIK MAITY, T K DAS, P KRISHNAN, ARTI BHATIA, MRINMOY ROY, D K SHARMA   +6 more
doaj   +1 more source

A comparison of discharge hydrograph using some methods of effective rainfall approach (case study: Upper Cisadane Watershed)

Jurnal Sumber Daya Air, 2016
Calculation of effective rainfall is an important step in hydrologic modelling. The used methods to calculate effective rainfall rarely observe watershed conditions on site.
Orita Mega Delani, Bambang Dwi Dasanto
doaj   +1 more source

A Simple and Accurate Explicit Form of the Green-Ampt Infiltration Model

, 2022
Abstract Note: Please see pdf for full abstract with equations. Finding a direct solution to the widely used Green-Ampt (G-A) one dimensional infiltration model has been subject of efforts for more than half a century. We derived an accurate explicit formula that appears be so far the simplest proposed model in the literature.
Sayed Hossein Sadeghi, Hank Loescher, Pete W. Jacoby, Pamela L. Sullivan   +3 more
openaire   +1 more source

Study on the influence of infiltration on flood propagation with different peak shape coefficients and duration

Water Policy, 2021
Traditional flood simulations fail to properly consider the impact of soil infiltration in floodplain areas with high soil infiltration rates. Notably, ignoring soil infiltration will lead to considerable uncertainty in flood simulations.
Jingming Hou, Zhaoan Zhang, Dawei Zhang, Baoshan Shi, Guangzhao Chen, Hongbin Zhang   +5 more
doaj   +1 more source

Comparison between different infiltration models to describe the infiltration of permeable brick pavement system via a laboratory-scale experiment

Water Science and Technology, 2021
The permeable brick pavement system (PBPs) is one of a widely used low impact development (LID) measures to alleviate runoff volume and pollution caused by urbanization.
Jianying Song, Jianlong Wang, Wenhai Wang, Liuwei Peng, Hongxin Li, Changhe Zhang, Xing Fang   +6 more
doaj   +1 more source

An improved Green-Ampt model for rainfall infiltration analysis of multi-layered heterogeneous soil slopes

Yantu gongcheng xuebao
The rainfall infiltration analysis of slopes is of a great significance to the reinforcement design, mitigation and risk mitigation of rainfall-induced landslides. The classical Green-Ampt model, whose parameters have clear physical meanings and which is
JIANG Shuihua 1, LIU Xian 1, 2, HUANG Jinsong 1, ZHOU Chuangbing 1
doaj   +1 more source

Rainfall infiltration model considering spatial variability of multiple layers in transition layer and its application in slope stability analysis

Yantu gongcheng xuebao
Establishing a reasonable rainfall infiltration model is an important prerequisite for revealing the rainfall-induced slope failure mechanism and disaster prevention and control. The traditional Green-Ampt model does not consider the distribution of soil
JIANG Shuihua,1, 2 , YUAN Zhirong,1, 2, LIU Xian,1, HUANG Jinsong,1, ZHOU Chuangbing,1, 2
doaj   +1 more source