Modeling infiltration in irrigation project

The Richards equation does not yield analytical solutions for the flow field, except under restrictive choices of hydraulic properties relating to water content, hydraulic conductivity, and the soil matric potential (Govindaraju et al., 1996). This paper deals with the estimation of infiltration fro...

Full description

Saved in:
Bibliographic Details
Main Authors: Ali, Md. Hazrat, Lee, Teang Shui, Kwok, Chee Yan, Eloubaidy, Aziz F., Foong, K. C.
Format: Conference or Workshop Item
Language:English
Published: Universiti Putra Malaysia 1999
Online Access:http://psasir.upm.edu.my/id/eprint/33785/1/33785.pdf
http://psasir.upm.edu.my/id/eprint/33785/
Tags: Add Tag
No Tags, Be the first to tag this record!
Institution: Universiti Putra Malaysia
Language: English
id my.upm.eprints.33785
record_format eprints
spelling my.upm.eprints.337852017-11-02T02:10:15Z http://psasir.upm.edu.my/id/eprint/33785/ Modeling infiltration in irrigation project Ali, Md. Hazrat Lee, Teang Shui Kwok, Chee Yan Eloubaidy, Aziz F. Foong, K. C. The Richards equation does not yield analytical solutions for the flow field, except under restrictive choices of hydraulic properties relating to water content, hydraulic conductivity, and the soil matric potential (Govindaraju et al., 1996). This paper deals with the estimation of infiltration from Muda area by a widely used approximate theory-based infiltration model, known as the Green-Ampt model (1911). The variation of the suction head and hydraulic conductivity with moisture content studied by Brooks and Corey (1964) was applied in the present model. The infiltration rate for each month was estimated and the mean infiltration rate was found to be 1.04 mm/day, which is approximately equal to the MADA’s used value of 1 mm/day, indicating the adequacy of the model. The hydraulic conductivity of the Muda soil ranges from 1 x 10-7 to 8 x 10-6 cm/s (Kitamura, 1990). The hydraulic conductivity of the soil was perturbed up to its limiting value with 1 x 10-6 cm/s increment and the variation of the infiltration rate with hydraulic conductivity was plotted. The results from the perturbation show that the mean infiltration rate is linear with the hydraulic conductivity. Universiti Putra Malaysia 1999 Conference or Workshop Item PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/33785/1/33785.pdf Ali, Md. Hazrat and Lee, Teang Shui and Kwok, Chee Yan and Eloubaidy, Aziz F. and Foong, K. C. (1999) Modeling infiltration in irrigation project. In: National Conference on Engineering Smart Farming for the Next Millenium, 14-16 Mar. 1999, UPM, Serdang, Selangor. (pp. 1-7).
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description The Richards equation does not yield analytical solutions for the flow field, except under restrictive choices of hydraulic properties relating to water content, hydraulic conductivity, and the soil matric potential (Govindaraju et al., 1996). This paper deals with the estimation of infiltration from Muda area by a widely used approximate theory-based infiltration model, known as the Green-Ampt model (1911). The variation of the suction head and hydraulic conductivity with moisture content studied by Brooks and Corey (1964) was applied in the present model. The infiltration rate for each month was estimated and the mean infiltration rate was found to be 1.04 mm/day, which is approximately equal to the MADA’s used value of 1 mm/day, indicating the adequacy of the model. The hydraulic conductivity of the Muda soil ranges from 1 x 10-7 to 8 x 10-6 cm/s (Kitamura, 1990). The hydraulic conductivity of the soil was perturbed up to its limiting value with 1 x 10-6 cm/s increment and the variation of the infiltration rate with hydraulic conductivity was plotted. The results from the perturbation show that the mean infiltration rate is linear with the hydraulic conductivity.
format Conference or Workshop Item
author Ali, Md. Hazrat
Lee, Teang Shui
Kwok, Chee Yan
Eloubaidy, Aziz F.
Foong, K. C.
spellingShingle Ali, Md. Hazrat
Lee, Teang Shui
Kwok, Chee Yan
Eloubaidy, Aziz F.
Foong, K. C.
Modeling infiltration in irrigation project
author_facet Ali, Md. Hazrat
Lee, Teang Shui
Kwok, Chee Yan
Eloubaidy, Aziz F.
Foong, K. C.
author_sort Ali, Md. Hazrat
title Modeling infiltration in irrigation project
title_short Modeling infiltration in irrigation project
title_full Modeling infiltration in irrigation project
title_fullStr Modeling infiltration in irrigation project
title_full_unstemmed Modeling infiltration in irrigation project
title_sort modeling infiltration in irrigation project
publisher Universiti Putra Malaysia
publishDate 1999
url http://psasir.upm.edu.my/id/eprint/33785/1/33785.pdf
http://psasir.upm.edu.my/id/eprint/33785/
_version_ 1643830970491600896