| On the Lock-In Phenomena near the Transonic Buffet Onset of a Prescribed Pitching Airfoil | |
Wei LY(韦莲旖)1,2; Zheng GN(郑冠男)1,2,3 ; Lu WS(陆维爽)1; Zhang YC(张煜宸)1,2; Yang GW(杨国伟)1,2
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| Corresponding Author | Zheng, Guannan([email protected]) |
| Source Publication | APPLIED SCIENCES-BASEL
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| 2024-07-01 | |
| Volume | 14Issue:13Pages:19 |
| Abstract | 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. |
| Keyword | transonic buffet limit cycle oscillation energy exchange phase shift buffet lock-in phenomena |
| DOI | 10.3390/app14135463 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:001269886300001 |
| WOS Keyword | OSCILLATIONS ; FLOW ; MECHANISM ; NUMBER |
| WOS Research Area | Chemistry ; Engineering ; Materials Science ; Physics |
| WOS Subject | Chemistry, Multidisciplinary ; Engineering, Multidisciplinary ; Materials Science, Multidisciplinary ; Physics, Applied |
| Funding Project | National Natural Science Foundation of China[12372171] |
| Funding Organization | National Natural Science Foundation of China |
| Classification | 二类/Q1 |
| Ranking | 1 |
| Contributor | Zheng, Guannan |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/96021 |
| Collection | 流固耦合系统力学重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Future Technol, Beijing 100191, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100191, Peoples R China |
| Recommended Citation 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.Rp_Au:Zheng, Guannan |
| 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. |
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