Simulation of infiltration from porous clay pipe in subsurface irrigation

Autor:	Ashim Das Gupta, Shahram Ashrafi, Mukand Singh Babel, Rainer Loof, Norihiro Izumi
Rok vydání:	2002
Předmět:	Hydraulic head Infiltration (hydrology) Hydraulic conductivity Soil test Soil texture Soil water Vadose zone Environmental science Geotechnical engineering Groundwater Water Science and Technology
Zdroj:	Hydrological Sciences Journal. 47:253-268
ISSN:	2150-3435 0262-6667
DOI:	10.1080/02626660209492928
Popis:	Advances in the traditional method of subsurface porous clay pipe irrigation rely on knowledge of the distribution of water in the soil. Knowing the relationships among the hydraulic and physical parameters in the system is important for both the design and management of the system. To simulate the infiltration from the porous clay pipe and predict the wetted zone geometry in the soil, a computer model is developed herein. Laboratory experiments were conducted on soil samples representing two different soil textures in a specially designed bin to understand the flow phenomenon and to validate the developed model. In a given soil texture, the installation depth of the pipe and the volume of water applied in the soil are the major factors affecting the wetted zone. The relationships among various parameters, namely lateral spacing, installation depth, irrigation run time, hydraulic conductivity of the body of the pipe, and hydraulic head in the system, were established using the developed model.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c4ac2fddc6cef064aed6ae8786f1e8f5 https://doi.org/10.1080/02626660209492928 Zobrazit plný text záznamu