文章基本信息

标题：Numerical Simulation of Fluid-Solid Coupling in Fractured Porous Media with Discrete Fracture Model and Extended Finite Element Method
本地全文：下载
作者：Qingdong Zeng
期刊名称：Computation
电子版ISSN：2079-3197
出版年度：2015
卷号：3
期号：4
页码：541-557
DOI：10.3390/computation3040541
语种：English
出版社：MDPI Publishing
摘要：Fluid-solid coupling is ubiquitous in the process of fluid flow underground and has a significant influence on the development of oil and gas reservoirs. To investigate these phenomena, the coupled mathematical model of solid deformation and fluid flow in fractured porous media is established. In this study, the discrete fracture model (DFM) is applied to capture fluid flow in the fractured porous media, which represents fractures explicitly and avoids calculating shape factor for cross flow. In addition, the extended finite element method (XFEM) is applied to capture solid deformation due to the discontinuity caused by fractures. More importantly, this model captures the change of fractures aperture during the simulation, and then adjusts fluid flow in the fractures. The final linear equation set is derived and solved for a 2D plane strain problem. Results show that the combination of discrete fracture model and extended finite element method is suited for simulating coupled deformation and fluid flow in fractured porous media.
关键词：fluid-solid coupling; porous elasticity; fractured porous media; discrete fracture model; extended finite element method fluid-solid coupling ; porous elasticity ; fractured porous media ; discrete fracture model ; extended finite element method