IMECH-IR  > 环境力学重点实验室(2009-2011)
A finite-element algorithm for modeling variably saturated flows
Wu MX(吴梦喜); Wu MX(吴梦喜)
Source PublicationJournal of Hydrology
Volumevolume 394Issue:3-4Pages:315-323
AbstractA general numerical algorithm in the context of finite element scheme is developed to solve Richards’ equation, in which a mass-conservative, modified head based scheme (MHB) is proposed to approximate the governing equation, and mass-lumping techniques are used to keep the numerical simulation stable. The MHB scheme is compared with the modified Picard iteration scheme (MPI) in a ponding infiltration example. Although the MHB scheme is a little inferior to the MPI scheme in respect of mass balance, it is superior in convergence character and simplicity. Fully implicit, explicit and geometric average conductivity methods are performed and compared, the first one is superior in simulation accuracy and can use large time-step size, but the others are superior in iteration efficiency. The algorithm works well over a wide variety of problems, such as infiltration fronts, steady-state and transient water tables, and transient seepage faces, as demonstrated by its performance against published experimental data. The algorithm is presented in sufficient detail to facilitate its implementation.
KeywordRichards’ Equation Variably Saturated Flow Finite Element Method Transient Water Table Infiltration
Subject Area流体力学 ; 交叉与边缘领域的力学
Indexed BySCI ; EI
WOS IDWOS:000285701200004
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorWu MX(吴梦喜)
Recommended Citation
GB/T 7714
Wu MX,Wu MX. A finite-element algorithm for modeling variably saturated flows[J]. Journal of Hydrology,2010,volume 394(3-4):315-323.
APA Wu MX,&吴梦喜.(2010).A finite-element algorithm for modeling variably saturated flows.Journal of Hydrology,volume 394(3-4),315-323.
MLA Wu MX,et al."A finite-element algorithm for modeling variably saturated flows".Journal of Hydrology volume 394.3-4(2010):315-323.
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