Stable element-free Galerkin solution procedures for the coupled soil-pore fluid problem
文献类型：期刊论文
| 作者 | Hua, Leina1,2 |
| 刊名 | INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING
 |
| 出版日期 | 2011-05-27 |
| 卷号 | 86期号:8页码:1000-1026 |
| 关键词 | soil-pore fluid interaction saturated and impermeable soil Element-Free Galerkin method stabilization technique |
| ISSN号 | 0029-5981 |
| 其他题名 | Int. J. Numer. Methods Eng. |
| 中文摘要 | It is always difficult to solve the coupled soil-pore fluid problem when the soil is saturated and impermeable, because this situation often results in intensive oscillations of the solutions. This topic has been discussed widely in the field of the finite element method but rarely by meshless methods. The Element-Free Galerkin (EFG) method has outstanding advantages of solving this problem, based on the fact that its interpolation function can be constructed flexibly by the nodes in the compact domain. In this study, an EFG numerical model together with a stabilization technique is proposed to obtain stable solutions, especially for the saturated and impermeable soil. Close agreement between computational results and analytical solutions for one-and two-dimensional examples shows that the proposed numerical model not only provides highly accurate solutions for the saturated soil with relatively high permeability, but also eliminates the oscillations of the solutions very effectively for the saturated and impermeable soil. Furthermore, the influences of the hydraulic anisotropy, a typical property of two-dimensional problems, on the proposed stabilization technique are discussed. It is suggested that the optimal distribution of the nodes of essential variables can be designed, according to the relative importance of the permeability in different directions. Copyright (c) 2010 John Wiley & Sons, Ltd. |
| 英文摘要 | It is always difficult to solve the coupled soil-pore fluid problem when the soil is saturated and impermeable, because this situation often results in intensive oscillations of the solutions. This topic has been discussed widely in the field of the finite element method but rarely by meshless methods. The Element-Free Galerkin (EFG) method has outstanding advantages of solving this problem, based on the fact that its interpolation function can be constructed flexibly by the nodes in the compact domain. In this study, an EFG numerical model together with a stabilization technique is proposed to obtain stable solutions, especially for the saturated and impermeable soil. Close agreement between computational results and analytical solutions for one-and two-dimensional examples shows that the proposed numerical model not only provides highly accurate solutions for the saturated soil with relatively high permeability, but also eliminates the oscillations of the solutions very effectively for the saturated and impermeable soil. Furthermore, the influences of the hydraulic anisotropy, a typical property of two-dimensional problems, on the proposed stabilization technique are discussed. It is suggested that the optimal distribution of the nodes of essential variables can be designed, according to the relative importance of the permeability in different directions. Copyright (c) 2010 John Wiley & Sons, Ltd. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications |
| 研究领域[WOS] | Engineering ; Mathematics |
| 关键词[WOS] | SATURATED POROUS-MEDIA ; POINT INTERPOLATION METHOD ; ONE-DIMENSIONAL MODELS ; FINITE-ELEMENTS ; DYNAMIC BEHAVIOR ; EFFECTIVE STRESSES ; MIXED FORMULATION ; MESHLESS METHODS ; ELASTIC SOIL ; CONSOLIDATION |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000289690800004 |
| 公开日期 | 2013-11-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6490]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Multiphase Complex Syst, Inst Proc Engn, Beijing 100190, Peoples R China 2.Tsinghua Univ, Dept Hydraul Engn, State Key Lab Hydrosci & Engn, Beijing 100084, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hua, Leina. Stable element-free Galerkin solution procedures for the coupled soil-pore fluid problem[J]. INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING,2011,86(8):1000-1026. |
| APA | Hua, Leina.(2011).Stable element-free Galerkin solution procedures for the coupled soil-pore fluid problem.INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING,86(8),1000-1026. |
| MLA | Hua, Leina."Stable element-free Galerkin solution procedures for the coupled soil-pore fluid problem".INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING 86.8(2011):1000-1026. |
入库方式： OAI收割
来源：过程工程研究所
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