Damage From Long Swell to Coastal Protection Facilities in a Fishing Port Area and Its Effect on Design Offshore Waves

Iwase, Hiroyuki; Kato, Hideaki; Suzuyama, Katsuyuki; Inoue, Masahito

doi:10.2208/kaigan.77.2_i_817

Cited by 1 publication

(1 citation statement)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, the effect of the long-period components of wind waves on coastal structures was suggested by [39], and the reef-zone disaster due to the longperiod waves that were bore-like surf beats was investigated by [40]. In Japan, the coastal structures at the Pacific and Kyushu coasts are frequently damaged by swells [41]. Moreover, in 2008, the "roundabout waves" caused great damage to the coast facing the Sea of Japan in Toyama Prefecture.…”

Section: Introductionmentioning

confidence: 99%

Response of Wave Dissipating Blocks Composing a Detached Breakwater to Waves with Various Periods

Kakinuma¹

2022

J. Civ. Eng. Constr.

View full text Add to dashboard Cite

We discuss the response of the wave dissipating blocks composing a detached breakwater to the waves with various periods, based on both the experimental and numerical results. First, in the hydraulic experiments, the number of the blocks fallen by the irregular waves was the largest when the still water level is moderate, namely the HWL. When the large and long wave is incident, the overflow that lasted for a long time fell many blocks at the back of the breakwater. When the irregular waves, long wave, and irregular waves are continuously incident in this order, the first irregular wave train shifted several blocks, and the subsequent long wave dropped these shifted blocks, displacing the blocks around them, whereafter the second irregular wave train dropped many of the displaced blocks. Second, in the vertically two-dimensional calculations, when the long wave struck the breakwater, a large-scale vortex was created near the seabed in front of the breakwater and remained during the pushing wave. The overflow due to the long wave generated negative wave pressure at the top behind the breakwater. Based on both the numerical and experimental results behind the breakwater, when a large positive wave pressure is generated after a negative wave pressure that is not large in absolute value, the number of fallen blocks will reduce. When large and short waves cause overtopping, and negative wave pressure frequently appears behind a breakwater, the blocks at the back of the breakwater can gradually shift, loosening their engagement.

show abstract

Section: Introductionmentioning

confidence: 99%

Response of Wave Dissipating Blocks Composing a Detached Breakwater to Waves with Various Periods

Kakinuma¹

2022

J. Civ. Eng. Constr.

View full text Add to dashboard Cite

show abstract

Damage From Long Swell to Coastal Protection Facilities in a Fishing Port Area and Its Effect on Design Offshore Waves

Cited by 1 publication

References 2 publications

Response of Wave Dissipating Blocks Composing a Detached Breakwater to Waves with Various Periods

Response of Wave Dissipating Blocks Composing a Detached Breakwater to Waves with Various Periods

Contact Info

Product

Resources

About