A generalized Ross infiltration model and the application on hole irrigation based on the biconjugate gradient stabilized algorithm

doi:10.1016/j.advwatres.2022.104181

	A generalized Ross infiltration model and the application on hole irrigation based on the biconjugate gradient stabilized algorithm
	Pan, Zhanpeng 1; Hou, Jingming 1; Li, Xinyi 1; Chai, Jie 3; Yin, Yalun 1; Zheng, Jian 2; Kang, Yongde 1
刊名	ADVANCES IN WATER RESOURCES
	2022-05-01
卷号	163
关键词	Richards equation Ross method Hole irrigation Biconjugate gradient stabilized algorithm Compressed matrix storage
ISSN号	0309-1708
DOI	10.1016/j.advwatres.2022.104181
英文摘要	Soil water dynamics are very important for understanding and managing water movement in agricultural irrigation; Therefore, it is of great significance to establish an efficient and accurate infiltration model to simulate soil water dynamics. In this work, based on the finite volume method discrete format and principal variable transformation technology, the Taylor first-order expansion is used to solve the Richards equation, the adaptive time step is controlled by the change of soil maximum saturation, the CMS and BiCGSTAB are used to solve the large sparse matrix generated by the implicit format, and the generalized Ross infiltration model is generated. The validity of the model was verified by mass conservation and field experiment, and the soil water dynamic change law of hole irrigation with two irrigation methods (HSI and HAI) was explored by the model. The result shows that the generalized Ross infiltration model based on CMS and BiCGSTAB can significantly improve the computational efficiency of the model; the main variable transformation technique of the generalized Ross infiltration model improves the mass conservation of the model. Balancing the model accuracy and calculation efficiency, a scientific and reasonable time step can be determined by controlling the change in maximum effective saturation (delta S-emax), the generalized Ross infiltration model is found to accurately simulate soil-water dynamics under hole irrigation (R-2 > 0.9). It is found that HSI and HAI in four-hole irrigation provides more possibilities for further realizing the movement of soil nutrients with water without considering the evaporation of irrigation holes or small evaporation. If the time and infiltration volume fitting curve determined with the indoor single-hole infiltration test is used to control the water volume, HSI requires longer infiltration time to reach the same irrigation volume.
WOS研究方向	Water Resources
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000798077800004
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/158683]
专题	能源与动力工程学院
作者单位	1.XiAn Univ Technol, State Key Lab Ecohydraul Northwest Arid Reg China, Xian 710048, Shaanxi, Peoples R China; 2.Lanzhou Univ Technol, Western Energy & Environm Res Ctr, Lanzhou 730050, Peoples R China; 3.Northwest A&F Univ, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Pan, Zhanpeng,Hou, Jingming,Li, Xinyi,et al. A generalized Ross infiltration model and the application on hole irrigation based on the biconjugate gradient stabilized algorithm[J]. ADVANCES IN WATER RESOURCES,2022,163.
APA	Pan, Zhanpeng.,Hou, Jingming.,Li, Xinyi.,Chai, Jie.,Yin, Yalun.,...&Kang, Yongde.(2022).A generalized Ross infiltration model and the application on hole irrigation based on the biconjugate gradient stabilized algorithm.ADVANCES IN WATER RESOURCES,163.
MLA	Pan, Zhanpeng,et al."A generalized Ross infiltration model and the application on hole irrigation based on the biconjugate gradient stabilized algorithm".ADVANCES IN WATER RESOURCES 163(2022).