Simulation of soil wetting pattern of vertical moistube-irrigation

doi:10.3390/w10050601

	Simulation of soil wetting pattern of vertical moistube-irrigation
	Fan, Yan-Wei 1,2; Huang, Ning 1; Zhang, Jie 1; Zhao, Tong 2
刊名	Water (Switzerland)
	2018-05-04
卷号	10 期号:5
关键词	Cost effectiveness Irrigation Soils Textures Cumulative infiltrations Discharge calculation HYDRUS-2D Influencing factors Initial water contents Irrigation management Laboratory experiments Soil wetting pattern
ISSN号	2073-4441
DOI	10.3390/w10050601
英文摘要	Knowledge of the soil wetting pattern characteristics of vertical moistube-irrigation is essential for the design of cost-effective and efficient irrigation systems. We conducted laboratory experiments to determine the specific discharge calculation formula and compare the accuracy of HYDRUS-2D simulation. The cumulative infiltrations, wetting pattern distances, and water content distributions predicted with HYDRUS-2D were found to align well with experimental data. The results provide support for using HYDRUS-2D as a tool for investigating and designing moistube-irrigation management practices. Numerical simulations were carried out with HYDRUS-2D to investigate the influence of soil texture, initial water content, pressure head, moistube length, and buried depth on wetting pattern characteristics. There are small differences in the shape of the soil wetting pattern, as well as significant differences in size. The wetting pattern and water content contour are approximately "ellipsoid" around the moistube. Soil texture has a significant effect on the wetting pattern characteristics, the vertical and horizontal wetting front distance, and the wetted soil volume decrease along with the increase of soil clay content. The initial water content, pressure head, and moistube length have great influence on the wetting front distance and the wetted soil volume. Both are positively correlated with the initial water content, pressure head, and length. Moistube buried depth affects the wetting pattern position. The soil wetting pattern decreases synchronously as the buried depth drops. © 2018 by the authors.
WOS研究方向	Environmental Sciences & Ecology ; Water Resources
语种	英语
出版者	MDPI AG, Postfach, Basel, CH-4005, Switzerland
WOS记录号	WOS:000435196700067
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114741]
专题	能源与动力工程学院
作者单位	1.Key Laboratory of Mechanics on Disaster and Environment in Western China, The Ministry of Education of China, College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou; 730000, China; 2.College of Energy and Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China
推荐引用方式 GB/T 7714	Fan, Yan-Wei,Huang, Ning,Zhang, Jie,et al. Simulation of soil wetting pattern of vertical moistube-irrigation[J]. Water (Switzerland),2018,10(5).
APA	Fan, Yan-Wei,Huang, Ning,Zhang, Jie,&Zhao, Tong.(2018).Simulation of soil wetting pattern of vertical moistube-irrigation.Water (Switzerland),10(5).
MLA	Fan, Yan-Wei,et al."Simulation of soil wetting pattern of vertical moistube-irrigation".Water (Switzerland) 10.5(2018).