Jet-Like Flow and Thrust From a Flexible Flapping Foil in Stationary Fluid

Abstract : Many lifting and propulsive surfaces in Nature are structurally flexible. How important is this flexibility on the lift and thrust forces generated and on the efficiency is an important and open question. The objective of the present work is to study some aspects of the unsteady flow associated with flapping flexible foils. The present research aims to experimentally study the effect of chordwise flexibility on the flow past a flexible flapping foil.

[1]  C. Ellington.  Insects versus birds: the great divide , 2006 .

[2]  T. Maxworthy.  The Fluid Dynamics of Insect Flight , 1981 .

[3]  M. Lighthill.  On the Weis-Fogh mechanism of lift generation , 1973, Journal of Fluid Mechanics.

[4]  Jun Zhang,et al.  Flexible filaments in a flowing soap film as a model for one-dimensional flags in a two-dimensional wind , 2000, Nature.

[5]  C. Ellington.  The Aerodynamics of Hovering Insect Flight. I. The Quasi-Steady Analysis , 1984 .

[6]  M. Dickinson,et al.  Wing rotation and the aerodynamic basis of insect flight. , 1999, Science.

[7]  T. Maxworthy.  Experiments on the Weis-Fogh mechanism of lift generation by insects in hovering flight. Part 1. Dynamics of the ‘fling’ , 1979, Journal of Fluid Mechanics.

[8]  O. Martienssen.  Die Gesetze des Wasser- und Luftwiderstandes: und ihre Anwendung in der Flugtechnik , 1913 .

[9]  Thomas L Daniel,et al.  Flexible Wings and Fins: Bending by Inertial or Fluid-Dynamic Forces?1 , 2002, Integrative and comparative biology.

[10]  Rasche Richtungsänderungen und Torsionen schwingender Fliegenflügel und Hypothesen über zugeordnete instationäre Strömlingseffekte , 1979, Journal of comparative physiology.

[11]  T. Daniel,et al.  The Journal of Experimental Biology 206, 2979-2987 © 2003 The Company of Biologists Ltd , 2022 .

[12]  Max F. Platzer,et al.  Characteristics of a Plunging Airfoil at Zero Freestream Velocity , 2001 .

[13]  T. Daniel,et al.  The Journal of Experimental Biology 206, 2989-2997 © 2003 The Company of Biologists Ltd , 2003 .

[14]  J. Rayner.  A vortex theory of animal flight. Part 1. The vortex wake of a hovering animal , 1979, Journal of Fluid Mechanics.

[15]  M. Dickinson,et al.  The aerodynamic effects of wing rotation and a revised quasi-steady model of flapping flight. , 2002, The Journal of experimental biology.

[16]  C. Ellington.  THE AERODYNAMICS OF HOVERING INSECT FLIGHT. V. A VORTEX THEORY , 1984 .

[17]  G. Batchelor,et al.  An Introduction to Fluid Dynamics , 1968 .

[18]  Sam Heathcote,et al.  Flexible Flapping Airfoil Propulsion at Zero Freestream Velocity , 2003 .

[19]  Z. J. Wang.  Two dimensional mechanism for insect hovering , 2000 .

[20]  Sam Heathcote,et al.  Effect of Spanwise Flexibility on Flapping Wing Propulsion , 2006 .

[21]  C. Ellington.  The Aerodynamics of Hovering Insect Flight. IV. Aeorodynamic Mechanisms , 1984 .

[22]  C. Ellington.  The Aerodynamics of Hovering Insect Flight. III. Kinematics , 1984 .

[23]  R Katzmayr,et al.  Effect of Periodic Changes of Angle of Attack on Behavior of Airfoils , 1922 .

[24]  Sanjay P Sane,et al.  The aerodynamics of insect flight , 2003, Journal of Experimental Biology.

[25]  T. Weis-Fogh.  Quick estimates of flight fitness in hovering animals , 1973 .

[26]  岩本 周平.  I. Ein Beitrag zur Erklarung des Segelfluges. , 1921 .

[27]  B. Tobalske,et al.  Aerodynamics of the hovering hummingbird , 2005, Nature.

[28]  Herbert Wagner.  Über die Entstehung des dynamischen Auftriebes von Tragflügeln , 1925 .

[29]  C. M. Dohring,et al.  Experimental and Computational Investigation of the Knoller-Betz Effect , 1998 .

[30]  S. Sane,et al.  Aerodynamic effects of flexibility in flapping wings , 2010, Journal of The Royal Society Interface.

[31]  Z. Jane Wang,et al.  DISSECTING INSECT FLIGHT , 2005 .

[32]  Sam Heathcote,et al.  Jet switching phenomenon for a periodically plunging airfoil , 2007 .

[33]  G. I. Taylor.  Formation of a Vortex Ring by Giving an Impulse to a Circular Disk and then Dissolving it Away , 1953 .

[34]  Peter Freymuth,et al.  Thrust generation by an airfoil in hover modes , 1990 .