Time-resolved vortex wake of a common swift flying over a range of flight speeds

Journal of the Royal Society Interface

Volumn 8, Issue 59, 2011, Pages 807-816

  Henningsson, P ^a   Muijres, F T ^a   Hedenstrom A ^a  

^a LUND UNIVERSITY   (Sweden)

Author keywords

Aerodynamics; Apus apus; Common swift; Particle image velocimetry (DPIV); Wake; Wind tunnel

Indexed keywords

COMPUTATIONAL FLUID DYNAMICS; FLOW VISUALIZATION; FREE FLIGHT; LIFT; VELOCIMETERS; VELOCITY MEASUREMENT; WAKES; WIND TUNNELS;

APUS APUS; COMMON SWIFT; DIGITAL PARTICLE IMAGE VELOCIMETRY; FLIGHT SPEED; HIGH-SPEED; PARTICLE IMAGE VELOCIMETRY (DPIV); TIME-RESOLVED; TRANSVERSE PLANES; VERTICAL FORCE; VORTEX WAKES; WINGTIP VORTEX;

VORTEX FLOW;

AIRFLOW; AIRWAY DYNAMICS; ARTICLE; BIRD; COMMON SWIFT; FLIGHT; FORELIMB; NONHUMAN; PARTICLE IMAGE VELOCIMETRY; VELOCITY;

APUS APUS; AVES;

EID: 79955708251     PISSN: 17425689     EISSN: 17425662     Source Type: Journal    
DOI: 10.1098/rsif.2010.0533     Document Type: Article

References (27)

1. Dabiri, J. O. 2005 On the estimation of swimming and flying forces from wake measurements. J. Exp. Biol. 208, 3519-3532. (doi:10.1242/jeb.01813)
2. Bomphrey, R. J., Lawson, N. J., Harding, N. J., Taylor, G. K. & Thomas, A. L. R. 2005 The aerodynamics of Manduca sexta: digital particle image velocimetry analysis of the leading-edge vortex. J. Exp. Biol. 208, 1079-1094. (doi:10.1242/jeb.01471)
3. Spedding, G. R., Hedenström, A. & Rosén, M. 2003 Quantitative studies of the wakes of freely flying birds in a low-turbulence wind tunnel. Exp. Fluids 34, 291-303. (doi:10.1007/s00348-002-0559-8)
4. Spedding, G. R., Rosén, M. & Hedenström, A. 2003 A family of vortex wakes generated by a thrush nightingale in free flight in a wind tunnel over its entire natural range of flight speeds. J. Exp. Biol. 206, 2313-2344. (doi:10.1242/jeb.00423)
5. Bomphrey, R. J. 2006 Insects in flight: direct visualization and flow measurements. Bioinspir. Biomim. 1, S1-S9. (doi:10.1088/1748-3182/1/4/S01)
6. Hedenström, A., Johansson, L. C., Wolf, M., von Busse, R., Winter, Y. & Spedding, G. R. 2007 Bat flight generates complex aerodynamic tracks. Science 316, 894-897. (doi:10.1126/science.1142281)
7. Henningsson, P., Spedding, G. R. & Hedenström, A. 2008 Vortex wake and flight kinematics of a swift in cruising flight in a wind tunnel. J. Exp. Biol. 211, 717-730. (doi:10.1242/jeb.012146)
8. Johansson, L. C., Wolf, M., von Busse, R., Winter, Y., Spedding, G. R. & Hedenström, A. 2008 The near and far wake of Pallas' long tongued bat (Glossophaga soricina). J. Exp. Biol. 211, 2909-2918. (doi:10.1242/jeb.018192)
9. Muijres, F. T., Johansson, L. C., Barfield, R., Wolf, M., Spedding, G. R. & Hedenström, A. 2008 Leading-edge vortex improves lift in slow-flying bats. Science 319, 1250-1253. (doi:10.1126/science.1153019)
10. Spedding, G. R., Hedenström, A. & Johansson, L. C. 2009 A note on wind-tunnel turbulence measurements with DPIV. Exp. Fluids 46, 527-537. (doi:10.1007/s00348-008-0578-1)
11. Hubel, T. Y., Riskin, D. K., Swartz, S. M. & Breuer, K. S. 2010Wake structure and wing kinematics: the flight of the lesser dog-faced fruit bat, Cynopterus brachyotis. J. Exp. Biol. 213, 3427-3440. (doi:10.1242/jeb.043257)
12. Warwick, D. R., Tobalske, B. W. & Powers, D. R. 2005 Aerodynamics of the hovering hummingbird. Nature 435, 1094-1097. (doi:10.1038/nature03647)
13. Hubel, T. Y., Hristov, N. I., Swartz, S. M. & Breuer, K. S. 2009 Time-resolved wake structure and kinematics of bat flight. Exp. Fluids 46, 933-943. (doi:10.1007/s00348-009-0624-7)
14. Johansson, L. C. & Hedenström, A. 2009 The vortex wake of blackcaps (Sylvia atricapilla L.) measured using high-speed digital particle image velocimetry (DPIV). J. Exp. Biol. 212, 3365-3376. (doi:10.1242/jeb.034454)
15. Hedenström, A., Muijres, F. T., von Busse, R., Johansson, L. C., Winter, Y. & Spedding, G. R. 2009 High-speed stereo DPIV measurements of wakes of two bat species flying freely in a wind tunnel. Exp. Fluids 46, 923-932. (doi:10.1007/s00348-009-0634-5)
16. Pennycuick, C. J., Alerstam, T. & Hedenström, A. 1997 A new low-turbulence wind tunnel for bird flight experiments at Lund University, Sweden. J. Exp. Biol. 200, 1441-1449. (Pubitemid 27253219)
17. Bomphrey, R. J., Taylor, G. K. & Thomas, A. L. R. 2009 Smoke visualization of free-flying bumblebees indicates independent leading-edge vortices on each wing pair. Exp. Fluids 46, 811-821. (doi:10.1007/s00348-009- 0631-8)
18. Tobalske, B. W., Peacock, W. L. & Dial, K. P. 1999 Kinematics of flap-bounding flight in the zebra finch over a wide range of flight speeds. J. Exp. Biol. 202, 1725-1739.
19. Tobalske, B. W., Jason, W. D., Hearn, W. D. & Warrick, D. R. 2009 Aerodynamics of intermittent bounds of flying birds. Exp. Fluids 46, 963-973. (doi:10.1007/s00348-009-0614-9)
20. Thomas, A. L. R., Taylor, G. K., Srygley, R. B., Nudds, R. & Bomphrey, R. J. 2004 Dragonfly flight: free-flight and tethered flow visualizations reveal a diverse array of unsteady lift-generating mechanisms, controlled primarily via angle of attack. J. Exp. Biol. 207, 4299-4323. (doi:10.1242/jeb.01262)
21. Anderson, J. D. 1989 Introduction to flight. New York, NY: McGraw-Hill, Inc.
22. Crow, S. C. 1970 Stability theory for a pair of trailing vortices. AIAA J. 8, 2172-2179. (doi:10.2514/3.6083)
23. Bristol, R. L., Ortega, J. M., Marcus, P. S. & Savas, Ö. 2004 On cooperative instabilities of parallel vortex pairs. J. Fluid Mech. 517, 331-358. (doi:10.1017/S0022112004001016)
24. Milne-Thompson, L. M. 1966 Theoretical aerodynamics. New York, NY: Dover.
25. Spedding, G. R., Hedenström, A. H., McArthur, J. & Rosén, M. 2008 The implications of low-speed fixed-wing aerofoil measurements on the analysis and performance of flapping bird wings. J. Exp. Biol. 211, 215-223. (doi:10.1242/jeb.007823)
26. Hedenström, A., Rosén, M. & Spedding, G. R. 2005 Vortex wakes generated by robins Erithacus rubecula during free flight in a wind tunnel. J. R. Soc. Interface 3, 263-276. (doi:10.1098/rsif.2005.0091)
27. Henningsson, P. & Hedenström, A. In press. Aerodynamics of gliding flight in common swifts. J. Exp. Biol.