On the Characteristics of an Absorbing Wavemaker with a Cross Section Having a Plumb Part near the Free Surface

抄録

The characteristics of a plunger absorbing wavemaker are studied. In the present wave absorption system the wavemaker is controlled to absorb the incoming waves by means of digital filtering of wave elevation signal measured in front of a wavemaker. This study is focused on the influence of plunger’s shape on wave absorption. Instead of the wedge-shaped plunger whose performance was investigated before, the plunger with the cross section having a plumb part near the free surface is adopted as the wavemaker. The absorption efficiency is investigated in period 0.5sec to 1.3sec.