Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020WR029510 |
Finite element modeling of diffusion in fractured porous media by using hierarchical material properties | |
G. D. Beskardes; C. J. Weiss; K. L. Kuhlman; K. W. Chang | |
2022-01-28 | |
发表期刊 | Water Resources Research |
出版年 | 2022 |
英文摘要 | Fractured porous media challenge modeling approaches due to high computational costs and excessive mesh refinement imposed by the extreme scale variability of fractures and the heterogeneity of the surrounding porous rock. To overcome such difficulties, we utilize the hierarchical finite element method (Hi-FEM) that has been developed previously to simulate the electrical potential distribution in complex geologic environments. The method employs the hierarchical basis functions in classical finite element analysis to enable representation of material properties on each dimensional component of a given 3D unstructured finite element, thereby inherently allowing for interactions at the boundary between fracture and a host rock. In this study, we extend its application to transient fluid flow and heat conduction in the Laplace domain. Time-domain flow solutions are obtained by numerical inverse Laplace transform. We evaluate the accuracy of the method using different flow models and demonstrate its robustness for large-scale, rock mass models featuring complex fracture networks. Moreover, for the computation of nodal Darcian velocity fields in fractured porous media where the fractures are represented as 2D features, a new approach that employs the Yeh’s Galerkin model for both volume and facet elements is proposed. Results show that Hi-FEM can produce accurate flow solutions for fractured porous media without any need of coupling or transfer mechanism while still being computationally economical and numerically robust, even for large-scale simulations. This article is protected by copyright. All rights reserved. |
领域 | 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/345980 |
专题 | 资源环境科学 |
推荐引用方式 GB/T 7714 | G. D. Beskardes,C. J. Weiss,K. L. Kuhlman,et al. Finite element modeling of diffusion in fractured porous media by using hierarchical material properties[J]. Water Resources Research,2022. |
APA | G. D. Beskardes,C. J. Weiss,K. L. Kuhlman,&K. W. Chang.(2022).Finite element modeling of diffusion in fractured porous media by using hierarchical material properties.Water Resources Research. |
MLA | G. D. Beskardes,et al."Finite element modeling of diffusion in fractured porous media by using hierarchical material properties".Water Resources Research (2022). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论