Exp Fluids (2007) 43:639 DOI 10.1007/s00348-007-0413-0 Michael Triantafyllou Published online: 17 October 2007 Springer-Verlag 2007 Biomimesis is a recently coined word denoting the energetics of the ﬂow; these will also drive further work in endeavor to emulate the performance and function of live terms of sensing and control as applied by live animals. organisms. The principles of ﬁsh and bird locomotion hold Observations and ﬂow visualization with live ﬁsh and a special place in the ﬁeld of biomimetics, because they are experimentation with robotic ﬁsh-like swimming devices intriguingly different from the engineering principles are unique tools in exploring the properties of the ﬂow applied in ships and airplanes. Fluid loads are so signiﬁcant structures produced by ﬁsh. for moving ﬁsh and birds that they are expected to have The ﬁeld of micro-organism swimming is equally developed efﬁcient ﬂow control procedures through evo- intriguing and with potentially even more signiﬁcant con- lutionary progress—a clear case where ﬂuid mechanics tributions to understanding the function of life; it is a ﬁeld should matter most. And yet, sharply contrasting views as that will grow rapidly in the near future. to the energy efﬁciency of this different paradigm of pro- In preparing this special issue a special thanks goes out pulsion, especially for marine animals, requires a careful to all the authors and referees who made a great effort to assessment of the forces and energy expended at realistic deliver their manuscripts, reviews and revisions in a timely Reynolds numbers—hence, an experimental approach is manner. Furthermore it has been a pleasure to work toge- often the most appropriate methodology. ther with the staff at Springer-Verlag, who helped This special issue on Swimming is intended to provide coordinate the production of all contributions in a single as many answers as to pose problems for further study. manuscript. While there has been great progress in identifying the principles and role of vorticity shedding and control in ﬁsh Michael Triantafyllou swimming, much remains to be done in terms of the three- dimensional structure of the vortical patterns and the Guest Editor M. Triantafyllou (&) MIT, Mechanical and Ocean Engineering, 77 Massachusetts Avenue, Cambridge, MA 02139, USA e-mail: email@example.com
Experiments in Fluids – Springer Journals
Published: Oct 17, 2007
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