A Gradient Smoothing Technique Based SFEM for Simulating the Full Impacts of Anomalies on Seepage Solutions and its Application in Multi-Parameter Seepage Inversion
发布时间：2025-05-28
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发表刊物：Water Resources Management
项目来源：国家自然科学基金
关键字：Groundwater flow · Heterogeneity · Seepage analysis · Free surface searching · Smoothed finite element · Hydrological state variables
摘要：Searching for the precise solution of the free surface has remained the main bottleneck in analyzing the unconfined seepage problem for earth-rock dams. This paper proposes an approach to solve classic earth-rock dams using the smoothed finite element method (S-FEM). To overcome the problems of complex calculation and accuracy loss caused by integrating the area of intersecting elements in saturated seepage, this paper optimizes the shape function calculation by reducing the area integral to a line integral along the elements. To achieve a balance between efficiency and accuracy, we investigated the distinct effects of various smooth elements on computational efficiency, which included computation time and iteration times. Moreover, we first explored the extensive effect of seepage anomalies and their positional changes on hydrological state variables, including head, free surface, overflow point, seepage velocity, and fluid pressure. This exploration presented could provide a potential for developing multi-parameter seepage inversion and serve as constraints for hydro-geophysical inversion.
合写作者：Qianwei Dai, Chongyang Kong, Junsheng Yang
第一作者：Yi Lei
论文类型：期刊论文
通讯作者：Bin Zhang
是否译文：否
发表时间：2024-04-28
收录刊物：SCI