Sea-Wave Streak-Line Patterns around a Wave-Receiver Plate of a Wave Energy Conversion System of Pendulum Type, Located at the Seashore

The authors have been investigated the characteristics of a wave energy conversion system of pendulum type, located at the seashore, with a sea-wave channel in Muroran Institute of Technology, Muroran. The aim of the study is to search a new natural energy resource. In this paper, the results of observations of wave streak-line patterns around a wave-receiver plate, which oscillates as a pendulum, are presented with several illustrations of photographs and figures. In the case of proper load for the receiver plate, wave streakline patterns tend to form series of circles at offshore side of the receiver plate; in the case of light load, they tend to form series of ellipses with vertical long axes; and in the case of heavy load series of ellipses with horizontal long axes.