A lift formula applied to low-Reynolds-number unsteady flows | |
Wang SZ(王士召)1; Zhang X(张星)1; He GW(何国威)1; Liu TS1,2; He, GW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. | |
发表期刊 | PHYSICS OF FLUIDS |
2013-09-01 | |
卷号 | 25期号:9页码:093605/1-093605/22 |
ISSN | 1070-6631 |
摘要 | A lift formula for a wing in a rectangular control volume is given in a very simple and physically lucid form, providing a rational foundation for calculation of the lift of a flapping wing in highly unsteady and separated flows at low Reynolds numbers. Direct numerical simulations on the stationary and flapping two-dimensional flat plate and rectangular flat-plate wing are conducted to assess the accuracy of the lift formula along with the classical Kutta-Joukowski theorem. In particular, the Lamb vector integral for the vortex force and the acceleration term of fluid for the unsteady inertial effect are evaluated as the main contributions to the unsteady lift generation of a flapping wing.;A lift formula for a wing in a rectangular control volume is given in a very simple and physically lucid form, providing a rational foundation for calculation of the lift of a flapping wing in highly unsteady and separated flows at low Reynolds numbers. Direct numerical simulations on the stationary and flapping two-dimensional flat plate and rectangular flat-plate wing are conducted to assess the accuracy of the lift formula along with the classical Kutta-Joukowski theorem. In particular, the Lamb vector integral for the vortex force and the acceleration term of fluid for the unsteady inertial effect are evaluated as the main contributions to the unsteady lift generation of a flapping wing. (C) 2013 AIP Publishing LLC. |
关键词 | Reynolds Number Acceleration Terms Control Volumes Flapping Wing Inertial Effect Lamb Vectors Low Reynolds Number Separated Flows Unsteady Lift |
学科领域 | 水动力学 |
DOI | 10.1063/1.4821520 |
URL | 查看原文 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000325397800047 |
关键词[WOS] | Insect Flight ; Vortex Theory ; Aerodynamic Force ; Flapping Flight ; Wake Structure ; Animal Flight ; Viscous-flow ; Bat Flight ; Kinematics ; Airfoil |
WOS研究方向 | Mechanics ; Physics |
WOS类目 | Mechanics ; Physics, Fluids & Plasmas |
项目资助者 | National Natural Science Foundation of China(10872201 ; National Natural Science Foundation of China [10872201, 11232011, 11302238, 11372331] ; National Basic Research Program of China (973 Program) [2013CB834100 (Nonlinear science)] ; National Supercomputer Center in Tianjin ; National Basic Research Program of China (973 Program)(2013CB834100 (Nonlinear science)) ; National Supercomputer Center in Tianjin ; 11232011 ; 11302238 ; 11372331) |
课题组名称 | LNM湍流 |
论文分区 | 一类/力学重要期刊 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/47531 |
专题 | 非线性力学国家重点实验室 |
通讯作者 | He, GW (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China. |
作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Western Michigan Univ, Dept Mech & Aeronaut Engn, Kalamazoo, MI 49008 USA |
推荐引用方式 GB/T 7714 | Wang SZ,Zhang X,He GW,et al. A lift formula applied to low-Reynolds-number unsteady flows[J]. PHYSICS OF FLUIDS,2013,25,9,:093605/1-093605/22. |
APA | Wang SZ,Zhang X,He GW,Liu TS,&He, GW .(2013).A lift formula applied to low-Reynolds-number unsteady flows.PHYSICS OF FLUIDS,25(9),093605/1-093605/22. |
MLA | Wang SZ,et al."A lift formula applied to low-Reynolds-number unsteady flows".PHYSICS OF FLUIDS 25.9(2013):093605/1-093605/22. |
条目包含的文件 | 下载所有文件 | |||||
文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
IMCAS-J2013-297.pdf(2214KB) | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 |
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。
修改评论