globalchange  > 气候变化与战略
DOI: 10.5194/hess-23-637-2019
论文题名:
Capturing soil-water and groundwater interactions with an iterative feedback coupling scheme: New HYDRUS package for MODFLOW
作者: Zeng J.; Yang J.; Zha Y.; Shi L.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期:2
起始页码: 637
结束页码: 655
语种: 英语
Scopus关键词: Control nonlinearities ; Groundwater flow ; Iterative methods ; Numerical methods ; Soil moisture ; Atmospheric systems ; Governing equations ; Groundwater interaction ; Numerical complexity ; Richards 'equation ; Soil water content ; Spatial and temporal scale ; Water balance analysis ; Groundwater ; complexity ; feedback mechanism ; groundwater ; groundwater flow ; nonlinearity ; Richards equation ; software ; soil ; water ; water budget ; water flow
英文摘要: Accurately capturing the complex soil-water and groundwater interactions is vital for describing the coupling between subsurface-surface-atmospheric systems in regional-scale models. The nonlinearity of Richards' equation (RE) for water flow, however, introduces numerical complexity to large unsaturated-saturated modeling systems. An alternative is to use quasi-3-D methods with a feedback coupling scheme to practically join sub-models with different properties, such as governing equations, numerical scales, and dimensionalities. In this work, to reduce the nonlinearity in the coupling system, two different forms of RE are switched according to the soil-water content at each numerical node. A rigorous multi-scale water balance analysis is carried out at the phreatic interface to link the soil-water and groundwater models at separated spatial and temporal scales. For problems with dynamic groundwater flow, the nontrivial coupling errors introduced by the saturated lateral fluxes are minimized with a moving-boundary approach. It is shown that the developed iterative feedback coupling scheme results in significant error reduction and is numerically efficient for capturing drastic flow interactions at the water table, especially with dynamic local groundwater flow. The coupling scheme is developed into a new HYDRUS package for MODFLOW, which is applicable to regional-scale problems. © Author(s) 2019.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163062
Appears in Collections:气候变化与战略

Files in This Item:

There are no files associated with this item.


作者单位: Zeng, J., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China, Department of Hydrology and Atmospheric Sciences, University of Arizona, Tucson, AZ, United States; Yang, J., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China; Zha, Y., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China; Shi, L., State Key Laboratory of Water Resources and Hydropower Engineering Science, Wuhan University, Wuhan, 430072, China

Recommended Citation:
Zeng J.,Yang J.,Zha Y.,et al. Capturing soil-water and groundwater interactions with an iterative feedback coupling scheme: New HYDRUS package for MODFLOW[J]. Hydrology and Earth System Sciences,2019-01-01,23(2)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Zeng J.]'s Articles
[Yang J.]'s Articles
[Zha Y.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Zeng J.]'s Articles
[Yang J.]'s Articles
[Zha Y.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Zeng J.]‘s Articles
[Yang J.]‘s Articles
[Zha Y.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.