実験水槽における長周期再反射波の低減方法

抄録

When the hydraulic model tests for wave propagation are done, the re-reflected waves caused at the wave generators also propagate to the experimental area. The absorption methods for the short-period waves are well known, but they are not useful for the reduction of long-period reflected waves. In this study, the analytical model for producing long-period waves using the pump-type wave maker is presented, and laboratory tests for the reduction of long-period re-reflected waves are carried out. In addition, the reduction of short-reflected waves using filter materials is also tested. The combination of these reduction methods for long-and short-period waves might be generally useful for the hydraulic model tests.