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http://dx.doi.org/10.5050/KSNVE.2013.23.7.662

Numerical Investigation on Surge Motion of a Rectangular Floating Body due to Inner Sloshing Phenomena  

Ha, Minho (Pusan National University)
Cheong, Cheolung (Pusan National University)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.23, no.7, 2013 , pp. 662-668 More about this Journal
Abstract
In this paper, possibility of controlling motion of a floating structure using a tuned liquid damper (TLD) is numerically investigated. A TLD is a tank partially filled with liquid. Sloshing motion of liquid inside a tank is known to suppress movement of the tank subject to external excitations at specific frequency. The effects of sloshing phenomena inside a rectangular floating body on its surge motion are investigated by varying external excitation frequency. First, a grid-refinement study is carried out to ensure validity of grid independent numerical solutions using present numerical techniques. Then, surge motion of the floating body subjected to external wave is simulated for five different excitation frequencies of which the center frequency equals to the natural frequency of internal liquid sloshing. The normalized amplitudes of surge motion of the target floating body are compared according to the excitation frequency, for the cases with and without water inside the floating body. It is shown that the motion of the floating body can be minimized by matching the sloshing natural frequency to the excitation frequency.
Keywords
Wave; Wave Maker; Sloshing; Tuned Liquid Damper; Floating Body;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Kareem, A. and Kijewski, T., 1999, Mitigation of Motions of Tall Buildings with Specific Examples of Recent Applications, Wind and Structures, Vol. 2, No. 3, pp. 201-251.   DOI   ScienceOn
2 Ha, M. H., Kim, D. H., Choi, H. I., Cheong, C. U. and Kwon, S. H., 2012, Numerical and Experimental Investigations Into Liquid Sloshing in a Rectangular Tank, Advances in Wind and Structures 2012, Seoul, Korea.
3 Ha, M. H., Kim, D. H. and Cheong, C. U., 2012, Numerical Parametric Study on Liquid Sloshing in a Rectangular Tank, Advances in Wind and Structures 2012, Seoul, Korea.
4 Seo, M. W., Jeong, W. B. and Cho, J. R., 2012, Experiment on Sloshing of Annular Cylindrical Tank for Development of Attitude Control Devices of Floating Offshore Wind Turbines, Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 23, No. 1, pp. 25-33.   과학기술학회마을   DOI   ScienceOn
5 Rognebakke, O. F. and Faltinsen, O. M., 2003, Coupling of Sloshing and Ship Motions, Journal of Ship Research, Vol. 47, No. 3, pp. 208-221.
6 Kim, Y. H., Sung, H. G., Cho, S. K., Jeong, H. U. and Choi, H. S., 2012, An Experimental Study on the Sloshing Effect to the Rectangular Cylinder's 1-DoF & 2-DoF Motions, KAOSTS, pp. 1388-1392.
7 Dean, R. G. and Dalrymple, R. A., 2000, Water Wave Mechanics for Engineers and Scientiscts, World Scientific.
8 Maguire, A. E., 2011, Hydrodynamics, Control and Numerical Modeling of Absorbing Wavemakers, University of Edinburgh.
9 Anant Lal, M. Elangovan, 2008, CFD Simulation and Validation of Flap Type Wave-maker, WASET, 46, pp. 76-82.
10 Silva, M. C., Vitola, M. D. A., Pinto, W. T. P., and Levi, C. A., 2010, Numerical Simulation of Monochromatic Wave Generated in Laboratory: Validation of a CFD Code. In 23 Congresso Nacional de Transport Aquaviario Construcao Naval Oshore, pages 1-12, Rio de Janeiro.