On the Lock-In Phenomena near the Transonic Buffet Onset of a Prescribed Pitching Airfoil
文献类型：期刊论文
| 作者 | Wei LY(韦莲旖)2,3; Zheng GN(郑冠男)1,2,3 ; Lu WS(陆维爽)3; Zhang YC(张煜宸)2,3; Yang GW(杨国伟)2,3
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| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2024-07-01 |
| 卷号 | 14期号:13页码:19 |
| 关键词 | transonic buffet limit cycle oscillation energy exchange phase shift buffet lock-in phenomena |
| DOI | 10.3390/app14135463 |
| 通讯作者 | Zheng, Guannan(zhengguannan@imech.ac.cn) |
| 英文摘要 | The limit cycle oscillation (LCO) in the transonic buffet on the fixed supercritical airfoil OAT15A under Ma = 0.73, AoA = 3.5 degrees and Re approximate to 3x106, is successfully simulated by means of the Reynolds Stress Model. Further, the buffet lock-in phenomena under prescribed pitch conditions near the buffet onset are also studied by evaluating the modified energy exchange based on the pitching component of the moment coefficients as well as the normalized relative phase map between the pitching component of the moment coefficients and the airfoil's angular velocity. The zero energy transfer branches in the modified energy map fail to indicate the lock-in boundaries, while the normalized phase map generally outlines the lock-in boundaries for small pitch amplitudes near the buffet onset, which suggests that the lock-in occurs where the moment is in phase with the angular velocity at small pitch amplitudes near the buffet onset. For pitch amplitudes larger than 0.4 degrees, the lock-in onset deviates from the phase shift, possibly due to the fact the instantaneous angle of attack can be lower than the buffet onset where the buffet phenomena may vanish. |
| 分类号 | 二类/Q1 |
| WOS关键词 | OSCILLATIONS ; FLOW ; MECHANISM ; NUMBER |
| 资助项目 | National Natural Science Foundation of China[12372171] |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001269886300001 |
| 资助机构 | National Natural Science Foundation of China |
| 其他责任者 | Zheng, Guannan |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96020]  |
| 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.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100191, Peoples R China 2.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100191, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Wei LY,Zheng GN,Lu WS,et al. On the Lock-In Phenomena near the Transonic Buffet Onset of a Prescribed Pitching Airfoil[J]. APPLIED SCIENCES-BASEL,2024,14(13):19. |
| APA | 韦莲旖,郑冠男,陆维爽,张煜宸,&杨国伟.(2024).On the Lock-In Phenomena near the Transonic Buffet Onset of a Prescribed Pitching Airfoil.APPLIED SCIENCES-BASEL,14(13),19. |
| MLA | 韦莲旖,et al."On the Lock-In Phenomena near the Transonic Buffet Onset of a Prescribed Pitching Airfoil".APPLIED SCIENCES-BASEL 14.13(2024):19. |
入库方式： OAI收割
来源：力学研究所
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