Computation of flow over a rotating body on unstructured Chimera mesh
文献类型：会议论文
| 作者 | Zhang X(张星) ; He GW(何国威); Ni SZ(倪赛珍)
|
| 出版日期 | 2007 |
| 会议名称 | 5th International Conference on Fluid Mechanics |
| 会议日期 | AUG 15-19, 2007 |
| 会议地点 | Shanghai, PEOPLES R CHINA |
| 页码 | 278-278 |
| 通讯作者 | Zhang X |
| 中文摘要 | Flow around moving boundary is ubiquitous in engineering applications. To increse the efficienly of the algorithm to handle moving boundaries is still a major challenge in Computational Fluid Dynamics (CFD). The Chimera grid method is one type of method to handle moving boundaries. A concept of domain de-composition has been proposed in this paper. In this method, sub-domains are meshed independently and governing equations are also solved separately on them. The Chimera grid method was originally used only on structured (curvilinear) meshes. However, in a problem which involves both moving boundary and complex geometry, the number of sub-domains required in a traditional (structured) Chimera method becomes fairly large. Thus the time required in the interior boundary locating, link-building and data exchanging also increases. The use of unstructured Chimera grid can reduce the time consumption significantly by the reduction of domain(block) number. Generally speaking, unstructured Chimera grid method has not been developed. In this paper, a well-known pressure correction scheme - SIMPLEC is modified and implemented on unstructured Chimera mesh. A new interpolation scheme regarding the pressure correction is proposed to prevent the possible decoupling of pressure. A moving-mesh finite volume approach is implemented in an inertial reference frame. This approach is then used to compute incompressible flow around a rotating circular and elliptic cylinder. These numerical examples demonstrate the capability of the proposed scheme in handling moving boundaries. The numerical results are in good agreement with other experimental and computational data in literature. The method proposed in this paper can be efficiently applied to more challenge cases such as free-falling objects or heavy particles in fluid. |
| 收录类别 | CPCI-S |
| 会议录 | New Trends In Fluid Mechanics Research - Proceedings Of The Fifth International Conference On Fluid Mechanics
 |
| 会议录出版者 | Beijing |
| 会议录出版地 | Tsinghua University Press |
| 语种 | 英语 |
| ISSN号 | 978-7-302-15894-3 |
| WOS记录号 | WOS:000254042000080 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/25456]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Zhang X,He GW,Ni SZ. Computation of flow over a rotating body on unstructured Chimera mesh[C]. 见:5th International Conference on Fluid Mechanics. Shanghai, PEOPLES R CHINA. AUG 15-19, 2007. |
入库方式： OAI收割
来源：力学研究所
浏览0
下载0
收藏0
其他版本
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。