Reconfiguration and drag reduction of flexible beam with point buoyancy in oscillatory flow
文献类型：期刊论文
| 作者 | Song JX(宋吉祥)3 ; Chen WM(陈伟民)2,3; Yan DB(严定帮)1; Guo SX(郭双喜)2,3
|
| 刊名 | EUROPEAN JOURNAL OF MECHANICS B-FLUIDS
 |
| 出版日期 | 2025-05-01 |
| 卷号 | 111页码:162-175 |
| 关键词 | Bending drag reduction Oscillatory flow Cauchy number C Y Vogel exponent v |
| ISSN号 | 0997-7546 |
| DOI | 10.1016/j.euromechflu.2025.01.006 |
| 通讯作者 | Song, Jixiang(songjixiang18@mails.ucas.ac.cn) ; Chen, Weimin(wmchen@imech.ac.cn) |
| 英文摘要 | Flexible structures with point buoyancy widely exist in nature and engineering. Under the action of oscillating flow, it usually has a large geometric nonlinear dynamic response. However, the dynamic response and drag reduction of flexible structures with point buoyancy have not been studied. Therefore, the numerical method in this paper investigates the dynamic response and drag reduction of point buoyant flexible structures under oscillatory flow. Firstly, complex spatial curvilinear coordinates establish the dynamic partial differential equations of flexible structures with point buoyancy. Then, the implicit finite-difference time-domain method is used to discretize the partial differential equation in space and time to form an algebraic equation. Finally, the dynamic response and drag reduction of flexible structures under non-buoyancy, uniform buoyancy, and point buoyancy are numerically analyzed. The results show that with the increase of Cauchy number CY, the deformation of the flexible structure becomes larger and larger, and a local bending point appears. The dimensionless vibration frequency numbers explain the occurrence of local bending points. Unlike no buoyancy, uniform buoyancy and point buoyancy make the flexible structure smaller and more symmetrical. Uniform buoyancy and point buoyancy can increase the Reconfiguration number R. The greater the buoyancy and buoyancy position, the greater the Reconfiguration number R. The load on the flexible structure under oscillating flow is still less than that on the rigid structure. The Vogel exponent is calculated by fitting the Reconfiguration number R. The drag reduction is directly proportional to the Vogel exponent v, that is, the greater the Vogel exponent v, the greater the drag reduction. When the Cauchy number CY is large, the Vogel exponent v of uniform buoyancy and point buoyancy is smaller than that of non-buoyancy. The greater the point buoyancy and buoyancy position, the smaller the deformation of the flexible structure, the greater the Reconfiguration number R, and the greater the Vogel exponent v. When the buoyancy position is small, the influence of point buoyancy on the flexible structure can be ignored. |
| 分类号 | 二类 |
| WOS关键词 | BLADE DYNAMICS ; FORCES ; PLATES ; MOTION ; WAVES |
| 资助项目 | Strategic Priority Research Program of Chinese Academy of Sciences[XDA22000000] |
| WOS研究方向 | Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001407431300001 |
| 资助机构 | Strategic Priority Research Program of Chinese Academy of Sciences |
| 其他责任者 | Song, Jixiang ; Chen, Weimin |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/98282]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Hunan Inst Traff Engn, Sch Electromech Engn, Hengyang 421001, Hunan, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Song JX,Chen WM,Yan DB,et al. Reconfiguration and drag reduction of flexible beam with point buoyancy in oscillatory flow[J]. EUROPEAN JOURNAL OF MECHANICS B-FLUIDS,2025,111:162-175. |
| APA | 宋吉祥,陈伟民,严定帮,&郭双喜.(2025).Reconfiguration and drag reduction of flexible beam with point buoyancy in oscillatory flow.EUROPEAN JOURNAL OF MECHANICS B-FLUIDS,111,162-175. |
| MLA | 宋吉祥,et al."Reconfiguration and drag reduction of flexible beam with point buoyancy in oscillatory flow".EUROPEAN JOURNAL OF MECHANICS B-FLUIDS 111(2025):162-175. |
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。