An element free Galerkin method for nonlinear heat transfer with phase change in Qinghai-Tibet railway embankment
文献类型：期刊论文
| 作者 | Gao Zhihua; Lai Yuanming; Zhang Mingyi; Qi Jilin; Zhang Shujuan |
| 刊名 | COLD REGIONS SCIENCE AND TECHNOLOGY
 |
| 出版日期 | 2007-04-01 |
| 卷号 | 48期号:1页码:15-23 |
| 关键词 | nonlinear temperature field Qinghai-Tibet railway the element free Galerkin method Lagrange multiplier method |
| ISSN号 | 0165-232X |
| DOI | 10.1016/j.coldregions.2006.10.004 |
| 通讯作者 | Gao Zhihua(zhgao@ns.lzb.ac.cn) |
| 英文摘要 | Since the element free Galerkin method (EFGM) is based on moving least-squares (MLS) interpolants, it requires only a mesh of nodes and a boundary description, which are beneficial to some problems with the moving boundary conditions, such as the transient temperature field problems with phase change. Because freezing and thawing often takes place in embankments in cold regions, the phase transition must be considered in heat transfer calculation. Therefore, in this paper, the EFGM is presented to solve the thermal problem involving phase change in permafrost embankment. In the calculation, the latent heat is considered using the enthalpy-based method and the essential boundary condition is enforced by the Lagrange multipliers method. The EFGM code has been written in the FORTRAN language for obtaining the numerical solution. The result shows that, compared with the finite element solution, EFGM has more advantages such as better agreement with the observational data, high convergence rate, simple pre-processing and post-processing, etc. in a word, these analyses support the proposition for employing such a method for nonlinear temperature field involving the phase change in the actual railway project on permafrost. (c) 2006 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | DEPENDENT THERMAL-CONDUCTIVITY ; PERMAFROST REGIONS ; NUMERICAL-SOLUTION ; MESHLESS METHOD |
| WOS研究方向 | Engineering ; Geology |
| WOS类目 | Engineering, Environmental ; Engineering, Civil ; Geosciences, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000245571400002 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2555938 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Gao Zhihua |
| 作者单位 | Chinese Acad Sci, State Key Lab Frozen Soil Engn, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao Zhihua,Lai Yuanming,Zhang Mingyi,et al. An element free Galerkin method for nonlinear heat transfer with phase change in Qinghai-Tibet railway embankment[J]. COLD REGIONS SCIENCE AND TECHNOLOGY,2007,48(1):15-23. |
| APA | Gao Zhihua,Lai Yuanming,Zhang Mingyi,Qi Jilin,&Zhang Shujuan.(2007).An element free Galerkin method for nonlinear heat transfer with phase change in Qinghai-Tibet railway embankment.COLD REGIONS SCIENCE AND TECHNOLOGY,48(1),15-23. |
| MLA | Gao Zhihua,et al."An element free Galerkin method for nonlinear heat transfer with phase change in Qinghai-Tibet railway embankment".COLD REGIONS SCIENCE AND TECHNOLOGY 48.1(2007):15-23. |
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来源：寒区旱区环境与工程研究所
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