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An Experimental Study on the Motion of Floating Bodies Arranged in Series for Wave Power Generation



Author(s)

Seiki Chiba¹, Kenta Hasegawa², Mikio Waki³ and Sho Kurita⁴

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DOI:10.17265/2161-6213/2017.11-12.001

1. Chiba Science Institute, Yakumo, Meguro-Ward, Tokyo 152-0023, Japan
2. National Maritime Research Institute, 6-38-1 Shinkawa, Mitaka-City, Tokyo 181-0004, Japan
3. Wits Inc., Oshiage, Sakura-City, Tochigi 329-1334, Japan
4. Kureha Elastomer Co. Ltd, Kanonnji-cho, Tsu-City, Mie 514-8511, Japan

This paper considered the optimal arrangement on the assumption that multiple power generation systems are used in a row ahead of the realization of the wave power generation system using the DE (dielectric elastomer) which is expected to be popularized in the future. A power generation system using DEs was studied as a moored floating body, and tank tests were conducted. There are few studies on the influence of multiple moored floating bodies on each other. Those studies clarified the fluctuation, energy absorption efficiency, tension mooring force and quietness characteristics produced from differences in the arrangement of the floating bodies within the floating body group and so on utilizing the principle of double oscillating water columns. The purpose of this paper is to clarify the influence of floating body intervals and number of floating bodies on floating motion and mooring tension when a plurality of floating bodies are moored in a row perpendicular to the advancing wave direction. We also discuss the conditions of the large power generation system in actual sea areas using the DEs.

Plural floating bodies, motion of floating body, mooring tension, electroactive polymer artificial muscle, dielectric elastomer, generator, marine energy, actuator, Chiba theory.