caa a22 4500 475737237 CHVBK 20180406123450.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1007/PL00010632 doi (NATIONALLICENCE)springer-10.1007/PL00010632 Wave-drift damping in slow surge-sway-yaw coupling motions of a cylinder array [Elektronische Daten] [Takeshi Kinoshita, Shunji Sunahara, Mengwei Li, Mitsuru Tsukui] Abstract:: Both experimental and theoretical investigations were made on wave-drift damping of a moored array of circular cylinders which undergo slow oscillations in horizontal modes, i.e., surge, sway, and yaw, due to the nonlinear excitation of ocean waves. Detail descriptions of the experimental arrangement and methods of processing the measured data are given. The model is restrained from the linear responses to wave excitations. An assumption of a quasisteady state for each position of rotation is made in data processing for the yaw mode of slow motion. To calculate wave-drift damping, the slow oscillations are approximated by the corresponding steady motions. The velocity potential is expanded into perturbation series based on two small parameters that measure wave slope and the velocity of steady flow, respectively. Wave-drift forces (moment) are calculated by the far-field method. Some new treatments to deal with the integral over the free surface are presented to improve the convergence and accuracy. The results of calculations and experiments are compared and satisfactory agreement is observed, which verifies the theory. The Society of Naval Architects of Japan, 2000 Key words: Nonlinear wave force nationallicence Wave drift damping nationallicence Kinoshita Takeshi Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan, JP aut Sunahara Shunji School of Marine Science and Technology, Tokai University, Japan, JP aut Li Mengwei Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan, JP aut Tsukui Mitsuru School of Marine Science and Technology, Tokai University, Japan, JP aut https://doi.org/10.1007/PL00010632 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00010632 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kinoshita Takeshi Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan, JP aut NATIONALLICENCE 700 1- Sunahara Shunji School of Marine Science and Technology, Tokai University, Japan, JP aut NATIONALLICENCE 700 1- Li Mengwei Institute of Industrial Science, University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan, JP aut NATIONALLICENCE 700 1- Tsukui Mitsuru School of Marine Science and Technology, Tokai University, Japan, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer