Experimental and numerical study on hydrodynamics of swimming paddle for a shoal crab robot

The rigid swimming paddle as an auxiliary motive power underwater is modeled and designed as the first attempt for the shoal crab robot Crabot-I. In this work, the hydrodynamics of a swimming paddle is investigated numerically and experimentally. The primary focus of our study is related specifically to the effect of St on hydrodynamic performance of a single swimming paddle in lift-based and drag-based modes, and the load-generating mechanism by studying the relations among evolution of vortex, pressure distribution and load characteristics, as well as demonstration and validation in low-speed tunnel. The results of numerical calculations by CFD and tests in the Ship Maneuverability Laboratory (HEU) Water Tunnel are both used to demonstrate fundamental properties of swimming paddle, and to provide a reference for the further research on subsea swimming gait based on the synergetic motion of two paddles.

[1]  Naomi Kato,et al.  Hydrodynamic Characteristics of a Mechanical Pectoral Fin , 1999 .

[2]  Agus Budiyono,et al.  Design and Implementation of Paired Pectoral Fins Locomotion of Labriform Fish Applied to a Fish Robot , 2009 .

[3]  Katya J. Honsa,et al.  Structural definition of the neuromuscular system in the swimming-paddle opener muscle of blue crabs , 2002, Cell and Tissue Research.

[4]  George V Lauder,et al.  Experimental Hydrodynamics of Fish Locomotion: Functional Insights from Wake Visualization1 , 2002, Integrative and comparative biology.

[5]  Lauder,et al.  KINEMATICS OF PECTORAL FIN LOCOMOTION IN THE BLUEGILL SUNFISH LEPOMIS MACROCHIRUS , 1994, The Journal of experimental biology.

[6]  Naomi Kato,et al.  A Numerical Study On Unsteady Flow Around a Mechanical Pectoral Fin , 2005 .

[7]  Wang Liquan.  On Alternating Equal-Phase Wave Gait of Crab-like Robot , 2011 .

[8]  Naomi Kato,et al.  Locomotion by mechanical pectoral fins , 1998 .

[9]  Gang Wang,et al.  On Alternating Equal-Phase Wave Gait of Crab-like Robot: On Alternating Equal-Phase Wave Gait of Crab-like Robot , 2011 .

[10]  Afzal Suleman,et al.  A numerical study of the propulsive efficiency of a flapping hydrofoil , 2003 .

[11]  P. W. Webb,et al.  Kinematics of Pectoral Fin Propulsion in Cymatogaster Aggregata , 1973 .

[12]  Qin Zai-bai.  Experimental study on the hydrodynamic performance analysis of a pectoral-fin propulsive system , 2010 .

[13]  Koichi Suzumori,et al.  Load characteristics of mechanical pectoral fin , 2008 .

[14]  R. W. Blake,et al.  The Mechanics of Labriform Locomotion I. Labriform Locomotion in the Angelfish (Pterophyllum Eimekei): An Analysis of the Power Stroke , 1979 .

[15]  Wang Hailon.  Dynamic Modeling and Motion Control of a Crablike Robot in Floating Gait , 2015 .

[16]  Frederic Libersat,et al.  Motor pattern analysis in the shore crab (Carcinus maenas) walking freely in water and on land , 1987 .

[17]  M. Triantafyllou,et al.  Wake mechanics for thrust generation in oscillating foils , 1991 .

[18]  K. H. Low,et al.  Modular design and initial gait study of an amphibian robotic turtle , 2007, 2007 IEEE International Conference on Robotics and Biomimetics (ROBIO).

[19]  Yumin Su,et al.  Numerical simulation for hydrodynamic characteristics of a bionic flapping hydrofoil , 2012 .

[20]  Xi Chen,et al.  Prototype development and gait planning of biologically inspired multi-legged crablike robot , 2013 .

[21]  R. W. Blake,et al.  Crab carapace hydrodynamics , 2009 .