较大尺度波长结节翼在临界角附近的特性分析
收稿日期: 2024-04-19
修回日期: 2024-04-23
录用日期: 2024-04-29
网络出版日期: 2024-05-14
基金资助
国家自然科学基金(12172014)
Characteristic analysis of large-scale wavelength protuberances wings near critical angle
Received date: 2024-04-19
Revised date: 2024-04-23
Accepted date: 2024-04-29
Online published: 2024-05-14
Supported by
National Natural Science Foundation of China(12172014)
郭翔鹰 , 许杰 , 黄永畅 . 较大尺度波长结节翼在临界角附近的特性分析[J]. 航空学报, 2024 , 45(S1) : 730557 -730557 . DOI: 10.7527/S1000-6893.2024.30557
In recent years， leading-edge serrations as a passive method for wing separation control have attracted significant attention in academia. This paper investigates the influence of two leading-edge tubercles with relatively large-scale wavelengths on the aerodynamics of a full-span wing near critical angles through numerical simulations. Compared to the baseline wing， the stalling process of the two improved wing shapes with larger-scale wavelengths is both slow and stable. By studying the surface flow characteristics through numerical simulations， we found that the wing with serrations having a wavelength of 1.5 times the chord length maintained a singular and regular flow pattern both before and after stalling， while the flow pattern of the wing with a wavelength equal to the chord length transitioned from a singular， regular flow to a more complex combination of multiple flow patterns as the angle increased. A mechanism is proposed to explain this transition in flow patterns， and two flow combination mechanisms are presented to explain the reasons for the different flow patterns.
Key words： airfoil; stall; leading-edge protuberances; flow control; flow pattern
| 1 | FISH F E， BATTLE J M. Hydrodynamic design of the humpback whale flipper［J］. Journal of Morphology， 1995， 225（1）： 51-60. |
| 2 | FISH F E. Performance constraints on the maneuverability of flexible and rigid biological systems［J］. Proceedings of the Eleventh International Symposium on Unmanned Untethered Submersible Technology， 1999： 394-406. |
| 3 | WATTS P， FISH F E. The influence of passive， leading edge tubercles on wing performance［C］∥Proceedings of the Twelfth International Symposium on Unmanned Untethered Submersible Technology （UUST）， 2001. |
| 4 | MIKLOSOVIC D S， MURRAY M M， HOWLE L E， et al. Leading-edge tubercles delay stall on humpback whale （Megaptera novaeangliae） flippers［J］. Physics of Fluids， 2004， 16（5）： L39-L42. |
| 5 | GORUNEY T， ROCKWELL D. Flow past a delta wing with a sinusoidal leading edge： Near-surface topology and flow structure［J］. Experiments in Fluids， 2009， 47（2）： 321-331. |
| 6 | DOWNER L， DOCKRILL P. Whalepower tubercle blade power performance test report［R］. Tignish：Wind Energy Institute of Canada， 2008. |
| 7 | ZHANG R K， WU V D J Z. Aerodynamic characteristics of wind turbine blades with a sinusoidal leading edge［J］. Wind Energy， 2012， 15（3）： 407-424. |
| 8 | HUANG G Y， SHIAH Y C， BAI C J， et al. Experimental study of the protuberance effect on the blade performance of a small horizontal axis wind turbine［J］. Journal of Wind Engineering and Industrial Aerodynamics， 2015， 147： 202-211. |
| 9 | JOHARI H， HENOCH C， CUSTODIO D， et al. Effects of leading-edge protuberances on airfoil performance［J］. AIAA Journal， 2007， 45（11）： 2634-2642. |
| 10 | HANSEN K L， KELSO R M， DALLY B B. Performance variations of leading-edge tubercles for distinct airfoil profiles［J］. AIAA Journal， 2011， 49（1）： 185-194. |
| 11 | CUSTODIO D. The effect of humpback whale-like leading edge protuberances on hydrofoil performance［D］. Worcester ：Worcester Polytechnic Institute， 2007. |
| 12 | DROPKIN A， CUSTODIO D， HENOCH C W， et al. Computation of flow field around an airfoil with leading-edge protuberances［J］. Journal of Aircraft， 2012， 49（5）： 1345-1355. |
| 13 | CAI C， ZUO Z G， LIU S H， et al. Numerical investigations of hydrodynamic performance of hydrofoils with leading-edge protuberances［J］. Advances in Mechanical Engineering， 2015， 7（7）： 168781401559208. |
| 14 | ZHANG M M， WANG G F， XU J Z. Aerodynamic control of low-reynolds-number airfoil with leading-edge protuberances［J］. AIAA Journal， 2013， 51（8）： 1960-1971. |
| 15 | SKILLEN A， REVELL A， PINELLI A， et al. Flow over a wing with leading-edge undulations［J］. AIAA Journal， 2014， 53（2）： 464-472. |
| 16 | WEBER P W， HOWLE L E， MURRAY M M， et al. Computational evaluation of the performance of lifting surfaces with leading-edge protuberances［J］. Journal of Aircraft， 2011， 48（2）： 591-600. |
| 17 | WATTS P， FISH F E. The influence of passive， leading edge tubercles on wing performance［C］∥Proceedings of the 12th International Symposium on Unmanned Untethered Submersible Technology. Durham：Autonomous Undersea Systems Institute， 2001. |
| 18 | PEDRO H C， KOBAYASHI M. Numerical study of stall delay on humpback whale flippers［C］∥46th AIAA Aerospace Sciences Meeting and Exhibit. Reston： AIAA， 2008. |
| 19 | JOHARI H. Applications of hydrofoils with leading edge protuberances［R］. Fort Belvoir：Defense Technical Information Center， 2012. |
| 20 | HANSEN K L， KELSO R M， DALLY B B. Performance variations of leading-edge tubercles for distinct airfoil profiles［J］. AIAA Journal， 2011， 49（1）： 185-194. |
| 21 | FAVIER J， PINELLI A， PIOMELLI U. Control of the separated flow around an airfoil using a wavy leading edge inspired by humpback whale flippers［J］. Comptes Rendus Mécanique， 2011， 340（1-2）： 107-114. |
| 22 | SUPREETH R， AROKKIASWAMY A， KESHAVAN A， et al. Numerical investigation of the role of tubercles in augmenting the aerodynamic characteristics of S823 airfoil［C］∥Advanced trends in mechanical and aerospace engineering， 2021. |
| 23 | CAI C， ZUO Z G， MAEDA T， et al. Periodic and aperiodic flow patterns around an airfoil with leading-edge protuberances［J］. Physics of Fluids， 2017， 29（11）： 115110. |
/
| 〈 |
|
〉 |
CJA