Universiti Teknologi Malaysia Institutional Repository

Effect of surface boundary condition on rainfall infiltration

Gofar, Nurly and Lee, Min Lee and Kassim, Azman (2006) Effect of surface boundary condition on rainfall infiltration. Jurnal Teknologi B (44B). pp. 63-70. ISSN 0127-9696

[img]
Preview
PDF
53Kb

Official URL: http://www.penerbit.utm.my/onlinejournal/44/B/JT44...

Abstract

Rainfall infiltration is greatly influenced by the surface boundary condition as well as hydraulic properties of soil. This paper highlights the study on the effect of several surface boundary conditions on the rainfall infiltration using a computer program VADOSE/W. A parametric study was carried out to study the effect of ambient temperature, relative humidity and wind speed on the evaporation and rainfall infiltration rate. The effect of soil hydraulic conductivity on the mechanism of rainfall infiltration was also studied by using two soil column models. Results show that rainfall infiltration is sensitive to relative humidity and ambient temperatures lower than soil temperature, but insensitive to wind speed and ambient temperatures higher than soil temperature. The hydraulic conductivity of soil and rainfall intensity have great influence on the infiltration mechanism and the development of surface runoff. Thus, reliable saturation profile can only be achieved if accurate surface boundary condition was considered for analysis.

Item Type:Article
Additional Information:Siri B (Pembinaan, Reka Bentuk & Perancangan)
Uncontrolled Keywords:Rainfall infiltration, evaporation, boundary condition, hydraulic conductivity, soil column model
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Civil Engineering
ID Code:5849
Deposited By: Pn Norhayati Abu Ruddin
Deposited On:03 Jul 2008 08:35
Last Modified:28 Oct 2010 04:59

Repository Staff Only: item control page