A Positivity-Preserving Finite Volume Scheme for Heat Conduction Equation on Generalized Polyhedral Meshes
文献类型：期刊论文
| 作者 | Xie, Hui1; Xu, Xuejun2,3 ; Zhai, Chuanlei1; Yong, Heng1
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| 刊名 | COMMUNICATIONS IN COMPUTATIONAL PHYSICS
 |
| 出版日期 | 2018-11-01 |
| 卷号 | 24期号:5页码:1375-1408 |
| 关键词 | Heat conduction anisotropic diffusion tensor distorted mesh positivity-preserving cell-centered scheme vertex elimination |
| ISSN号 | 1815-2406 |
| DOI | 10.4208/cicp.OA-2017-0183 |
| 英文摘要 | In this paper we present a nonlinear finite volume scheme preserving positivity for heat conduction equations. The scheme uses both cell-centered and cell-vertex unknowns. The cell-vertex unknowns are treated as auxiliary ones and are eliminated by our newly developed second-order explicit interpolation formula on generalized polyhedral meshes. With the help of the additional parameters, it is not necessary to choose the stencil adaptively to obtain the convex decomposition of the co-normal vector and also is not required to replace the interpolation formula with positivity-preserving but usually low-order accurate ones whenever negative interpolated auxiliary unknowns appear. Moreover, the new flux approximation has a fixed stencil. These features make our scheme more efficient compared with other existing methods based on Le Potier's nonlinear two-point approximation, especially in 3D. Numerical experiments show that the scheme maintains the positivity of the continuous solution and has nearly second-order accuracy for the solution on the distorted meshes where the diffusion tensor may be anisotropic and discontinuous. |
| 资助项目 | National Natural Science Foundation of China[11371065] ; National Natural Science Foundation of China[11225107] ; Defense Industrial Technology Development Program[B1520132012] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000455959000005 |
| 出版者 | GLOBAL SCIENCE PRESS |
| 源URL | [http://ir.amss.ac.cn/handle/2S8OKBNM/32296]  |
| 专题 | 计算数学与科学工程计算研究所 |
| 通讯作者 | Yong, Heng |
| 作者单位 | 1.Inst Appl Phys & Computat Math, Beijing 100094, Peoples R China 2.Chinese Acad Sci, Acad Math & Syst Sci, Inst Computat Math, LSEC, POB 2719, Beijing 100190, Peoples R China 3.Tongji Univ, Sch Math Sci, Shanghai, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xie, Hui,Xu, Xuejun,Zhai, Chuanlei,et al. A Positivity-Preserving Finite Volume Scheme for Heat Conduction Equation on Generalized Polyhedral Meshes[J]. COMMUNICATIONS IN COMPUTATIONAL PHYSICS,2018,24(5):1375-1408. |
| APA | Xie, Hui,Xu, Xuejun,Zhai, Chuanlei,&Yong, Heng.(2018).A Positivity-Preserving Finite Volume Scheme for Heat Conduction Equation on Generalized Polyhedral Meshes.COMMUNICATIONS IN COMPUTATIONAL PHYSICS,24(5),1375-1408. |
| MLA | Xie, Hui,et al."A Positivity-Preserving Finite Volume Scheme for Heat Conduction Equation on Generalized Polyhedral Meshes".COMMUNICATIONS IN COMPUTATIONAL PHYSICS 24.5(2018):1375-1408. |
入库方式： OAI收割
来源：数学与系统科学研究院
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