A novel boundary constrained reconstruction method for unstructured finite volume method of Euler equations
文献类型：期刊论文
| 作者 | Su, Hongxing4; Chen, Zedong3; Wei, Yanxin2; Chang SY(常思源)1 ; Liu, Jun4
|
| 刊名 | PHYSICS OF FLUIDS
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 36期号:12页码:28 |
| ISSN号 | 1070-6631 |
| DOI | 10.1063/5.0240141 |
| 通讯作者 | Liu, Jun(liujun65@dlut.edu.cn) |
| 英文摘要 | For the second-order cell-centered unstructured finite volume method, the variables are linearly distributed inside the grid cell. Classical methods use a first-order extrapolation process in calculating the boundary values, which can lead to loss of second-order accuracy at the boundary. In order to solve the problem, a novel boundary constrained reconstruction method is proposed for boundary values in the unstructured finite volume method. This method first solves for all cell-centered gradients using the weighted least squares method. Subsequently, the boundary cell center gradient is used to reconstruct the boundary face center values. These reconstructed boundary values, corrected by boundary conditions, are then added to the boundary cell gradient calculation stencils to recalculate the boundary cell center gradient. The above-mentioned steps are repeated iteratively, stopping when the boundary face center values stabilize. Numerical case validation shows that this method is able to ensure linear distribution of variables within the boundary cells of the second-order cell-centered unstructured finite volume method, thereby recovering the accuracy of boundary cell calculations. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | DISCRETIZATIONS ; SOLVERS |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001379508500019 |
| 其他责任者 | Liu, Jun |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97973]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China 2.AVIC First Aircraft Inst, Xian 710089, Peoples R China; 3.Beijing Inst Astronaut Syst Engn, Beijing 100190, Peoples R China; 4.Dalian Univ Technol, Sch Mech & Aerosp Engn, Dalian 116024, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Su, Hongxing,Chen, Zedong,Wei, Yanxin,et al. A novel boundary constrained reconstruction method for unstructured finite volume method of Euler equations[J]. PHYSICS OF FLUIDS,2024,36(12):28. |
| APA | Su, Hongxing,Chen, Zedong,Wei, Yanxin,常思源,&Liu, Jun.(2024).A novel boundary constrained reconstruction method for unstructured finite volume method of Euler equations.PHYSICS OF FLUIDS,36(12),28. |
| MLA | Su, Hongxing,et al."A novel boundary constrained reconstruction method for unstructured finite volume method of Euler equations".PHYSICS OF FLUIDS 36.12(2024):28. |
入库方式： OAI收割
来源：力学研究所
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