Numerical simulation of unsaturated soil water from a trickle irrigation system for sandy loam soils
Other Title(s)
نمذجة عددية لجريان الماء في تربة غير مشبعة من نظام ري بالتنقيط لتربة مزيجية رملية
Joint Authors
Abd, Maysun Bashir
Khalil, Lina Ali
Source
Issue
Vol. 25, Issue 3 (31 Mar. 2019), pp.38-52, 15 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2019-03-31
Country of Publication
Iraq
No. of Pages
15
Main Subjects
Topics
Abstract EN
Trickle irrigation is a system for supplying filtered water and fertilizer directly into the soil and water and it is allowed to dissipate under low pressure in an exact predetermined pattern.
An equation to estimate the wetted area of unsaturated soil with water uptake by roots is simulated numerically using the HYDRUS-2D/3D software.
In this paper, two soil types, which were different in saturated hydraulic conductivity were used with two types of crops tomato and corn, different values of emitter discharge and initial volumetric soil moisture content were assumed.
It was assumed that the water uptake by roots was presented as a continuous sink function and it was introduced into Richard's equation in the unsaturated zone.
Equations for wetted depth and radius were predicted.
A good agreement was found between the predicted results with those obtained from the experiment field work.
The maximum error of the predicted results were 23%, and 0.98 for modeling efficiency (EF), moreover, the root square error (RMSE) was below 0.95 cm.
American Psychological Association (APA)
Khalil, Lina Ali& Abd, Maysun Bashir. 2019. Numerical simulation of unsaturated soil water from a trickle irrigation system for sandy loam soils. Journal of Engineering،Vol. 25, no. 3, pp.38-52.
https://search.emarefa.net/detail/BIM-875537
Modern Language Association (MLA)
Khalil, Lina Ali& Abd, Maysun Bashir. Numerical simulation of unsaturated soil water from a trickle irrigation system for sandy loam soils. Journal of Engineering Vol. 25, no. 3 (Mar. 2019), pp.38-52.
https://search.emarefa.net/detail/BIM-875537
American Medical Association (AMA)
Khalil, Lina Ali& Abd, Maysun Bashir. Numerical simulation of unsaturated soil water from a trickle irrigation system for sandy loam soils. Journal of Engineering. 2019. Vol. 25, no. 3, pp.38-52.
https://search.emarefa.net/detail/BIM-875537
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 51-52
Record ID
BIM-875537