Abstract
The effects of leading-edge (LE) tubercles on the aerodynamic characteristics of the flipper, swept and delta wings are introduced here. Originated from the whale flipper, it has been demonstrated that LE tubercles could improve the aerodynamic performance of the flipper wing at high angles-of-attack. For the delta wing , the post-stall lift coefficient could be increased by the LE tubercles, while the drag coefficient is also increased, leading to a decrease in the lift-to-drag ratio . Opposite effects are observed on the swept wing due to the difference in test conditions. The study of control mechanism indicates that LE tubercles work as vortex generators to induce streamwise vortices , which are beneficial for flow separation control. Furthermore, the optimal parameters for the tubercles for flow control might differ at different conditions.
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References
Birch D, Lee T, Mokhtarian F, Kafyeke F (2004) Structure and induced drag of a tip vortex. J Aircraft 41(5):1138–1145
Bolzon MDP, Kelso RM, Arjomandi M (2016) Formation of vortices on a tubercled wing, and their effects on drag. Aerosp Sci Technol 56:46–55
Bolzon MD, Kelso RM, Arjomandi M (2017a) Force measurements and wake surveys of a swept tubercled wing. J Aerosp Eng 30(3):04016085
Bolzon MD, Kelso RM, Arjomandi M (2017b) Performance effects of a single tubercle terminating at a swept wing’s tip. Exp Thermal Fluid Sci 85:52–68
Chen H, Pan C, Wang JJ (2013) Effects of sinusoidal leading edge on delta wing performance and mechanism. Sci China Technol Sci 56(3):772–779
Chen H, Wang JJ (2014) Vortex structures for flow over a delta wing with sinusoidal leading edge. Exp Fluids 55(6):1761
Custodio D, Henoch CW, Johari H (2015) Aerodynamic characteristics of finite span wings with leading-edge protuberances. AIAA J 53(7):1878–1893
Gursul I, Wang Z, Vardaki E (2007) Review of flow control mechanisms of leading-edge vortices. Prog Aerosp Sci 43(7):246–270
Goruney T, Rockwell D (2009) Flow past a delta wing with a sinusoidal leading edge: near-surface topology and flow structure. Exp Fluids 47(2):321–331
Mitchella AM, Délery J (2011) Research into vortex breakdown control. Prog Aerosp Sci 37(4):385–418
Miklosovic DS, Murray MM, Howle LE, Fish FE (2004) Leading-edge tubercles delay stall on humpback whale (Megaptera novaeangliae) flippers. Phys Fluids 16(5):39–42
Miklosovic DS, Murray MM, Howle LE (2007) Experimental evaluation of sinusoidal leading edges. J Aircraft 44(4):1404–1408
Pedro HTC, Kobayashi MH (2008) Numerical study of stall delay on humpback whale flippers. AIAA Paper 2008-0584
Spalart PR (1998) Airplane trailing vortices. Annu Rev Fluid Mech 30:107–138
van Nierop EA, Alben S, Brenner MP (2008) How bumps on whale flippers delay stall: an aerodynamic model. Phys Rev Lett 100(5):054502
Weber PW, Howle LE, Murray MM, Miklosovic DS (2011) Computational evaluation of the performance of lifting surfaces with leading-edge protuberances. J Aircraft 48(2):591–600
Wei Z, Lian L, Zhong Y (2018) Enhancing the hydrodynamic performance of a tapered swept-back wing through leading-edge tubercles. Exp Fluids 59(6):103
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Feng, L., Wang, J. (2020). Leading-Edge Tubercles on Swept and Delta Wing Configurations. In: New, D., Ng, B. (eds) Flow Control Through Bio-inspired Leading-Edge Tubercles. Springer, Cham. https://doi.org/10.1007/978-3-030-23792-9_5
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DOI: https://doi.org/10.1007/978-3-030-23792-9_5
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