Open Access Open Access  Restricted Access Subscription Access

Thrust Analysis of A Fish Robot Actuated by Piezoceramic Composite Actuators

Q. S. Nguyen, H. C. Park, D. Y. Byun


In this work, a three-dimension simulation model was built for a tail fin of a fish robot actuated by piezoceramic composite actuator to find out a best tail-beat frequency. First, a simulation for the tail fin at a tail-beat frequency
was carried out to confirm a measured thrust data in the previous study. The computed and measured thrusts were in good agreement. Then, a series of thrust simulations were conducted for various tail-beat frequencies to confirm the best tail-beat frequency, which was obtained from the thrust measurement in the previous study. The largest thrust was calculated at 3.7Hz of tail-beat frequency, when vortices around the cross section were fully separated. The calculated best tail-beat frequency well agreed with measured one.

Full Text:



J. C. Liao, D. N. Beal, G. V. Lauder, and M. S. Triantafyllou, Fish exploiting vortices decrease muscle activity. Science, 302, 1566−1569, 2003.

M. J. Lighthill, Note on the swimming of slender fish, J. Fluid Mech, 9, pp. 305–317, 1960.

J. Lighthill, Mathematical Biofluiddynamics, SIAM, 1975.

T. Y. Wu, Swimming of a waving plate, J. Fluid Mech, 10, pp. 321–344, 1961.

M. J. Lighthill, Aquatic animal propulsion of high hydromechanical efficiency, J. Fluid Mech, 44, pp. 265–301, 1970.

M. J. Lighthill, Large-amplitude elongated-body theory of fish locomotion, in Proc. R. Soc. Lond. B., 179, pp. 125–138, 1971.

J. Y. Cheng, L. X. Zhuang, and B. G. Tong, Analysis of swimming three-dimensional waving plates, J. Fluid mech, 232, 341-355, 1991.

D. Adkins, and Y. Y. Yan, CFD simulation of fish-like body moving in viscous liquid, J. of Bionic Engineering, 3, pp. 147-153, 2006.

Z. Zhang, A. J. Gil, O. Hassan, and K. Morgan, The simulation of 3D unsteady incompressible flows with moving boundaries on unstructured meshes, Computers and Fluids, 37, pp. 620-631, 2008.

W. Kowalczyk, and A. Delgado, Simulation of fluid flow in a channel induced by three types of fin-like motion, J. of Bionic Eng., 4, pp. 165-176, 2007.

Q. S. Nguyen, S. Heo, H. C. Park, and D. Y. Byun, Perfomance evaluation of an improved fish robot actuated by piezoceramic actuators, Smart Mater. Struct., 19, Issue 3, 2010.

M. Sfakiotakis, D. M. Lane, and J. B. C. Davies, Review of fish swimming modes for aquatic locomotion, IEEE Journal of Oceanic Engineering, Vol. 24, pp. 237-252, April 1999.

K. J. Yoon, K. H. Park, S. K. Lee, N. S. Goo and H. C. Park, Analytical design model for a piezo-composite unimorph actuator and its verification using lightweight piezo-composite actuators, Smart Material and Structure. 13, pp. 459-467, 2004.

S. V. Patankar, Numerical heat transfer and fluid flow, Hemisphere Publishing Corporation, Washington, DC, USA, 1980.



  • There are currently no refbacks.