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The Ground Effect in Anguilliform Swimming

Uchenna E Ogunka, Mohsen Daghooghi, Amir M Akbarzadeh, Iman Borazjani
2020 Biomimetics  
To investigate whether swimming near ground has hydrodynamics benefits, two large-eddy simulations of a self-propelled anguilliform swimmer are carried out—one swimming far away from the ground (free swimming  ...  This indicates that swimming near the ground with a gap larger than 0 . 04 L does not improve the swimming performance of anguilliform swimmers when there is no incoming flow, that is, the interaction  ...  The kinematics for anguilliform swimmers is usually in the form of a backward traveling wave, with the wave amplitude increasing almost linearly from the head to the tail of the fish [16] .  ... 
doi:10.3390/biomimetics5010009 pmid:32138387 pmcid:PMC7148536 fatcat:vao7gr377fdubi4cd7bqbdjs6q

Wave-like aquatic propulsion of mono-hull marine vessels

V.V. Krylov, E. Porteous
2010 Ocean Engineering  
The present paper describes the results of the experimental investigation of a smallscale mono-hull model boat propelled by a localised flexural wave propagating along the plate of finite width forming  ...  Forward propulsion of the boat was achieved through flexural wave propagation in the opposite direction, which is similar to the aquatic propulsion used in nature by stingrays.  ...  Such low wave velocities have been specifically chosen to provide several wavelengths of flexural waves on the length of the propulsive fin, which was required to emulate the 'rajiform' wave-like motion  ... 
doi:10.1016/j.oceaneng.2009.12.008 fatcat:mgentjc7prbk5mvczhyvp4g76e

Rajiform locomotion: three-dimensional kinematics of the pectoral fin surface during swimming in the freshwater stingray Potamotrygon orbignyi

E. L. Blevins, G. V. Lauder
2012 Journal of Experimental Biology  
Rajiform locomotion in fishes is dominated by distinctive undulations of expanded pectoral fins.  ...  We present the first three-dimensional analysis of undulatory rajiform locomotion in a batoid, the freshwater stingray Potamotrygon orbignyi.  ...  Williston of the Ichthyology Collection at the Harvard University Museum of Comparative Zoology.  ... 
doi:10.1242/jeb.068981 pmid:22693031 fatcat:yfkyftir5ngazdndk5pmsfx2au

Hydrodynamics of Biomimetic Marine Propulsion and Trends in Computational Simulations

M. I. Lamas, C. G. Rodriguez
2020 Journal of Marine Science and Engineering  
of investigation of computational models.  ...  The aim of the present paper is to provide the state of the works in the field of hydrodynamics and computational simulations to analyze biomimetic marine propulsors.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/jmse8070479 fatcat:cuiqvdwpn5c6xchsmt2wejfq7a

On the role of nonlinear distortion in the theory of wave-like aquatic propulsion

V.V. Krylov
2017 Ocean Engineering  
in the case of linear flexural wave of constant amplitude.  ...  Recent experimental investigations of small model boats propelled by propagating flexural waves carried out by the present author and his co-workers demonstrated viability of this type of propulsion as  ...  compression waves for the wedge material, θ is the wedge angle, and k = ω/c is the wavenumber of a wedge mode characterised by the number n = 1, 2, 3,..., where c is the velocity of wedge mode of number  ... 
doi:10.1016/j.oceaneng.2017.08.049 fatcat:z6a7v3volfgddcwdsdk7lvvdue

Review of fish swimming modes for aquatic locomotion

M. Sfakiotakis, D.M. Lane, J.B.C. Davies
1999 IEEE Journal of Oceanic Engineering  
The motivation is to provide a relevant and useful introduction to the existing literature for engineers with an interest in the emerging area of aquatic biomechanisms.  ...  Several physico-mechanical designs evolved in fish are currently inspiring robotic devices for propulsion and manoeuvring purposes in underwater vehicles.  ...  In [4] the use of a dual flapping foil device for propulsion and/or manoeuvring of a rigid cylinder-shaped body is demonstrated, investigating both a 'clapping' and a 'waving' mode of operation.  ... 
doi:10.1109/48.757275 fatcat:q6savwo2dja5xjv2y46vuc4qy4

Articulated swimming creatures

Jie Tan, Yuting Gu, Greg Turk, C. Karen Liu
2011 ACM SIGGRAPH 2011 papers on - SIGGRAPH '11  
We optimize over the space of these functions in order to find a motion that causes the creature to swim straight and stay within a given energy budget.  ...  The swimming motion of a given creature is described as a set of periodic functions, one for each joint degree of freedom.  ...  We thank the members of the Aquatic Propulsion Lab for their help on this work.  ... 
doi:10.1145/1964921.1964953 fatcat:rx7lrw5zsrgmfjigdzfrvk77qi

Articulated swimming creatures

Jie Tan, Yuting Gu, Greg Turk, C. Karen Liu
2011 ACM Transactions on Graphics  
We optimize over the space of these functions in order to find a motion that causes the creature to swim straight and stay within a given energy budget.  ...  The swimming motion of a given creature is described as a set of periodic functions, one for each joint degree of freedom.  ...  We thank the members of the Aquatic Propulsion Lab for their help on this work.  ... 
doi:10.1145/2010324.1964953 fatcat:uhl6ckhuxrgxhceejnodecvgxi

Development and Motion Testing of a Robotic Ray

Jianhui He, Yonghua Zhang
2015 Journal of Robotics  
In order to improve the stability and maneuvering of biomimetic fish like underwater propulsors, we selected bluespotted ray that propel themselves by taking advantage of their pectoral fins as target.  ...  The fin undulating motion patterns, fin ray angle, and fin shape to be investigated are briefly introduced. Later, the kinematic analysis of fin ray and the whole fin is discussed.  ...  Acknowledgment The authors would first like to thank Professor JIA Laibing of University of Science and Technology of China for his support on the works over these years.  ... 
doi:10.1155/2015/791865 fatcat:r7j5wqmctvghxc6fttlmmxgjsi

Mechatronics and buoyancy implementation of robotic fish swimming with modular fin mechanisms

K. H. Low
2007 Proceedings of the Institution of mechanical engineers. Part I, journal of systems and control engineering  
The workspace of the fin mechanism is derived and applied in locomotion implementation. The mechatronics design and locomotion control of the integrated robotic fish are presented.  ...  This paper presents an underwater vehicle mimicking the undulating fins of fish. To mimic the actual flexible fins of real fish, a fin-like mechanism is modelled with a series of connecting linkages.  ...  Mechanical control of swimming speed: stiffness The author wishes to thank reviewers for their  ... 
doi:10.1243/09596518jsce276 fatcat:mrrqa32zqfea5hziviusjr7uwa

Experimental confirmation of the propulsion of marine vessels employing guided flexural waves in attached elastic fins

V.V. Krylov, G.V. Pritchard
2007 Journal of Fluids and Structures  
Experimental conrmation of the propulsion of marine vessels employing guided exural waves in attached elastic ns.  ...  The principle of employing such guided flexural waves as a source of aquatic propulsion is similar to that used in nature by stingrays.  ...  Further work is required to investigate the efficiency of wave propulsion in comparison with its main rival, a propeller.  ... 
doi:10.1016/j.jfluidstructs.2006.08.015 fatcat:ikfpvip65ba3bj76v27dbye6e4

Diversity, mechanics and performance of natural aquatic propulsors [chapter]

F.E. Fish
2006 Flow Phenomena in Nature Volume 1  
These behaviors include swimming in discrete formations (e.g. schooling, drafting), aerial leaps (e.g. porpoising), intermittent swimming (e.g. burst-andcoast), free-riding (e.g. wave and bow riding, hitchhiking  ...  However, evolution is not a conscious process and is dictated by variation in the genetic code and multi-functional roles of animals in response to local environments.  ...  Acknowledgments This chapter is based in part on research performed with support from the Office of Naval Research (ONR) and Defense Advanced Research Projects Agency (DARPA).  ... 
doi:10.2495/1-84564-001-2/2a fatcat:rice7744nvdpzdettagferhufe

Evolving Optimal Swimming in Different Fluids: A Study Inspired by batoid Fishes [chapter]

Vito Cacucciolo, Francesco Corucci, Matteo Cianchetti, Cecilia Laschi
2014 Lecture Notes in Computer Science  
The proposed model allowed an investigation of the co-evolution of morphology and control, exploiting dynamics emergent from the interaction between the environment and the mechanical properties of the  ...  Having condensed such aspects in a mathematical model, we studied the adaptability of a batoid -like morphology to different environments.  ...  Most of the investigators found that Batoids propel themselves by moving their enlarged pectoral fins in a flapping motion, combined with an undulatory motion (a traveling wave moving in the downstream  ... 
doi:10.1007/978-3-319-09435-9_3 fatcat:yl5sc7stwjaaddqxqsjwcpsc74

Pectoral fin locomotion in batoid fishes: undulation versus oscillation

L J Rosenberger
2001 Journal of Experimental Biology  
Batoid species fall onto a continuum between undulation and oscillation on the basis of the number of waves present on the fins.  ...  In contrast, the four Dasyatis species increase swimming speed by increasing frequency and wavespeed, although D. americana also changes wave number.  ...  Heine for giving me advice on catching and storing rays and for allowing me to analyze his video recordings of Rhinoptera bonasus.  ... 
pmid:11136623 fatcat:mpyc2jihnrblvaiv2bkt7k5z3i

Investigating the Thrust Production of a Myliobatoid-Inspired Oscillating Wing [chapter]

Keith W. Moored, W. Smith, J.M. Hester, W. Chang, Hilary Bart-Smith
2008 Advances in Science and Technology  
They are extremely efficient swimmers, can cruise at high speeds and can perform turn-on-a-dime maneuvering, making these fishes excellent inspiration for an autonomous underwater vehicle.  ...  Lessons are distilled from studying the fluid dynamics of myliobatoids that can be applied to the design of biomimetic underwater vehicles using morphing wing technology.  ...  Undulatory motion defined as having greater than one wave present on a fin [7] is one extreme of kinematic motion and was termed 'rajiform' by Breder [8] .  ... 
doi:10.4028/3-908158-15-x.25 fatcat:7fz4welwf5ai3adkijmjkibtba
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