Hostname: page-component-cd9895bd7-dk4vv Total loading time: 0 Render date: 2024-12-19T22:46:52.572Z Has data issue: false hasContentIssue false
  • English
  • Français

Hydrodynamic propulsion by large amplitude oscillation of an airfoil with chordwise flexibility

Published online by Cambridge University Press:  19 April 2006

J. Katz  and
D. Weihs
J. Katz
Affiliation:
Department of Aeronautical Engineering, Technion-Israel Institute of Technology, Haifa
D. Weihs
Affiliation:
Department of Aeronautical Engineering, Technion-Israel Institute of Technology, Haifa
Get access Rights & Permissions [Opens in a new window]

Abstract

The hydrodynamic forces due to the motion of a flexible foil in a large amplitude curved path in an inviscid incompressible flow are analysed. A parametric study of large amplitude oscillatory propulsion, with special emphasis on the effect of chordwise flexibility of the fin, is presented. This flexibility was found to increase the propulsive efficiency by up to 2% while causing small decreases in the overall thrust, compared with similar motion with rigid foils.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 88 , Issue 3 , 13 October 1978 , pp. 485 - 497
Copyright
© 1978 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bonthron, R. J. & Fejer, A. A. 1962 A hydrodynamic study of fish locomotion. Proc. 4th U.S. Nat. Cong. Appl. Mech., Berkeley, California, pp. 1249–1255.Google Scholar
Chopra, M. G. 1974 Hydromechanics of lunate-tail swimming propulsion. J. Fluid Mech. 64, 375–391.Google Scholar
Chopra, M. G. 1976 Large amplitude lunate-tail theory of fish locomotion. J. Fluid Mech. 74, 161–182.Google Scholar
Giesing, J. P. 1968 Nonlinear two dimensional unsteady potential flow with lift. J. Aircraft 5 (2), 135–143.Google Scholar
James, E. C. 1973 A linearized theory for the unsteady motions of a wing in curved flight. Naval Ship. R. & D. Center, Bethesda, Maryland, Rep. no. 4098.Google Scholar
Karamcheti, K. 1966 Principles of Ideal-Fluid Aerodynamics. Wiley.Google Scholar
Katz, J. & Weihs, D. 1978 The effect of chordwise flexibility on the lift of a suddenly accelerated cairfoil. (To appear.)Google Scholar
Lighthill, M. J. 1960 Note on the swimming of slender fish. J. Fluid Mech. 9, 305–317.Google Scholar
Lighthill, M. J. 1970 Aquatic animal propulsion of high hydromechanical efficiency. J. Fluid Mech. 44, 265–301.Google Scholar
Lighthill, M. J. 1971 Large amplitude elongated body theory of fish locomotion. Proc. Roy. Soc. B 179, 125–138.Google Scholar
Picken, J. & Crowe, C. T. 1974 Performance efficiency of swim-fins. Ocean Engng 2, 251–258.Google Scholar
Robinson, A. & Laurmann, J. A. 1956 Wing Theory. Cambridge University Press.Google Scholar
Scherer, J. O. 1968 Experimental and theoretical investigation of large amplitude oscillating foil propulsion systems. Hydronautics Inc. Tech. Rep. no. 662–1.Google Scholar
Siekmann, J. 1962 Theoretical studies of sea animal locomotion. Part 1. Ing. Arch. 31, 214–228.Google Scholar
Siekmann, J. 1963 Theoretical studies of sea animal locomotion. Part 2. Ing. Arch. 32, 40–50.Google Scholar
Webb, P. W. 1975 Hydrodynamics and energetics of fish propulsion. Fisheries Res. Bd Can. Bull. no. 190.Google Scholar
Wu, T. Y. 1961 Swimming of a waving plate. J. Fluid Mech. 10, 321–344.Google Scholar