Abstract
The underlying physics of the flight of birds is still not fully understood, in part due to the very complex wing movement and a lack of appropriate measurement techniques. Modern measurement technologies for fluid flows are often not suited for experiments with living animals, since these techniques may potentially harm the animal (e.g. lasers). The objective of this project was to modify the established technology Particle Image Velocimetry (PIV) to measure the flow around trained barn owls with the least possible hazard to the health of the animals. Furthermore, the shape of the wings was measured simultaneously using Projected Pattern Correlation Technique (PROPAC) to correlate the flow with the shape and movement of the wings. Results of the measurements of gliding and flapping flight are presented in this chapter.
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References
Spedding, G.R., Rosen, M., Hedenström, A.: 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(14), 2313–2344 (2003)
Speeding, G.R.: The wake of a kestrel (falco tinnunculus) in gliding flight. J. Exp. Biol. 127, 45–57 (1987)
Hedenström, A., Rosen, M., Spedding, G.R.: Vortex wakes generated by robins Erithacus rubecula during free flight in a wind tunnel. J. Roy. Soc. Interface 3(7), 263–276 (2006)
Rosén, M., Spedding, G.R., Hedenström, A.: Wake structure and wingbeat kinematics of a house-martin Delichon urbica. J. Roy. Soc. Interface 4(15), 659–668 (2007)
Muijres, F.T., Bowlin, M.S., Johansson, C., Hedenström, A.: Vortex wake, downwash distribution, aerodynamic performance and wingbeat kinematics in slow-flying pied flycatchers. J. Roy. Soc. Interface 9 (2012)
Warrick, D.R., Tobalsk, B.W., Powers, D.R.: Lift production in the hovering hummingbird. Proc. Roy. Soc. Bio. Sci. 276(1674), 3747–3752 (2009)
Wolf, T., Konrath, R., Kirmse, T., Erlinghagen, T.: Measuring shape of bird wings during flight. In: 14th International Symposium on Flow Visualization—ISFV14, Daegu, 21–24.06.2010 (2010)
Wolf, T., Konrath, R., Erlinghagen, T., Wagner, H.: Shape and deformation measurement of free flying birds in flapping flight. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, Heidelberg (2012)
Adrian, R.J. Westerweel, J.: Particle Image Velocimetry. Cambridge Aerospace Series. Cambridge University Press, Cambridge (2010)
Raffel, M., Willert, C.E. Kompenhans, J.: Particle Image Velocimetry: A Practical Guide, Experimental Fluid Mechanics. Springer, Berlin (1998)
Schlichting, H. Gersten, K.: Boundary Layer Theory. Springer, Berlin (2000)
Pennycuick, C.: Modelling the Flying Bird. Academic Press, Bristol (2008)
Herzog, K.: Anatomie und Flugbiologie der Vögel. Gustav Fischer Verlag, Stuttgart (1968)
Hubbel, T.: Untersuchungen zur instationären Aerodynamik an einem vogelähnlichen Flügelschlagmodell. Dissertation, Fachbereich Biologie der Technischen Hochschule Darmstadt, Darmstadt (2006)
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Doster, T., Wolf, T., Konrath, R. (2014). Combined Flow and Shape Measurements of the Flapping Flight of Freely Flying Barn Owls. In: Dillmann, A., Heller, G., Krämer, E., Kreplin, HP., Nitsche, W., Rist, U. (eds) New Results in Numerical and Experimental Fluid Mechanics IX. Notes on Numerical Fluid Mechanics and Multidisciplinary Design, vol 124. Springer, Cham. https://doi.org/10.1007/978-3-319-03158-3_67
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DOI: https://doi.org/10.1007/978-3-319-03158-3_67
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