On applicability of the Kutta-Joukowski theorem to low-Reynolds-number unsteady flows | |
Wang SZ(王士召); Zhang X(张星); He GW(何国威); Liu TS; Wang SZ(王士召) | |
Source Publication | 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 |
2013 | |
Pages | AIAA 2013-0067 |
Conference Name | 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013 |
Conference Date | JAN 07-10, 2013 |
Conference Place | Grapevine, TX, United states |
Abstract | The limitations of the Kutta-Joukowski (K-J) theorem in prediction of the time-averaged and instantaneous lift of an airfoil and a wing in low-Reynolds-number unsteady flows are examined. A general lift formula for a rectangular control volume is given in a very simple form in the framework of viscous flow theory, which provides a rational foundation for a direct comparison with the K-J theorem considered as a reduced case. Direct numerical simulations on the stationary and flapping flat plate and rectangular wing are conducted to assess the accuracy of both the K-J theorem and the general lift formula. 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. |
Department | LNM湍流 |
Funding Organization | American Institute for Aeronautics and Astronautics (AIAA) |
ISBN | 9781624101816 |
URL | 查看原文 |
Indexed By | EI |
Language | 英语 |
Document Type | 会议论文 |
Identifier | http://dspace.imech.ac.cn/handle/311007/48293 |
Collection | 非线性力学国家重点实验室 |
Corresponding Author | Wang SZ(王士召) |
Recommended Citation GB/T 7714 | Wang SZ,Zhang X,He GW,et al. On applicability of the Kutta-Joukowski theorem to low-Reynolds-number unsteady flows[C]51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition 2013,2013:AIAA 2013-0067. |
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