期刊
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
卷 198, 期 27-29, 页码 2122-2136出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2009.02.024
关键词
Surface-subsurface coupled flows; Richards' equation; Variably saturated porous medium; Kinematic wave equation; Discontinuous Galerkin method; Unstructured mesh
Robust and accurate schemes are designed to simulate the coupling between subsurface and overland flows. The coupling conditions at the interface enforce the continuity of both the normal flux and the pressure. Richards' equation governing the subsurface flow is discretized using a back-ward differentiation formula and a symmetric interior penalty discontinuous Galerkin method. The kinematic wave equation governing the overland flow is discretized using a Godunov scheme. Both schemes individually are mass conservative and can be used within single-step or multi-step coupling algorithms that ensure overall mass conservation owing to a specific design of the interface fluxes in the multi-step case. Numerical results are presented to illustrate the performances of the proposed algorithms. (C) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据