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Effects of three-dimensionality on thrust production by a pitching panel

  • MELISSA A. GREEN (a1) and ALEXANDER J. SMITS (a1)
Abstract

To understand the fluid dynamics of a biologically inspired unsteady low-aspect-ratio propulsor, unsteady pressure distributions were measured and compared with time-averaged thrust performance and wake visualizations. The experiments were performed on rigid rectangular panels with different aspect ratios, pitching in a uniform flow. Panel aspect ratio and pitching amplitude were shown to affect the magnitude and time dependence of the pressure distribution on the panel surface, the vorticity generation on the panel, and thrust production. A new scaling is proposed that includes these parameters and collapses the oscillating pressure magnitude and the thrust coefficient.

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P. L. Ardonceau 1989 Unsteady pressure distribution over a pitching airfoil. AIAA J. 27, 660662.

M. Hultmark , M. Leftwich & A. J. Smits 2007 Flowfield measurements in the wake of a robotic lamprey. Exps. Fluids 43, 683690.

M. M. Koochesfahani 1989 Vortical patterns in the wake of an oscillating airfoil. AIAA J. 27, 12001205.

S. Sarkar & K. Venkatraman 2006 Numerical simulation of thrust generating flow past a pitching airfoil. Computers Fluids 35, 1642.

N. Singh , S. Aikat & B. C. Basu 1989 Potential flow calculation for three-dimensional wings and wing-body combination in oscillatory motion. AIAA J. 27, 16651666.

G. Triantafyllou , M. Triantafyllou & M. Grosenbaugh 1993 Optimal thrust development in oscillating foils with application to fish propulsion. J. Fluids Struct. 7, 205224.

E. D. Tytell & G. V. Lauder 2004 The hydrodynamics of eel swimming i. wake structure. J. Expl Biol. 207, 18251841.

J. Usherwood , T. Hedrick , C. McGowan & A. Biewener 2005 Dynamic pressure maps for wings and tails of pigeons in slow, flapping flight, and their energetic implications. J. Expl Biol. 208, 355369.

C. H. K. Williamson & A. Roshko 1988 Vortex formation in the wake of an oscillating cylinder. J. Fluids Struct. 2, 355381.

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Journal of Fluid Mechanics
  • ISSN: 0022-1120
  • EISSN: 1469-7645
  • URL: /core/journals/journal-of-fluid-mechanics
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