Development of a Sloping-Slit Caisson Breakwater

Sekiguchi, Shin-ichiro; Miyabe, Shuichi; Yamamoto, Yoshiyuki; Miwa, Toshihiko

doi:10.1142/s0578563402000548

Cited by 1 publication

(4 citation statements)

References 2 publications

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“…The entire region exhibits a reduction in height as shown in Figure 3(b). This reduction is 42.9% less than the numerical results given for the case without the trench where d 2 = 1:5d 1 , 35.1% less for d 3 = 2d 1 and 19.2% less for d 4 = 2:5d 1 .…”

Section: Numerical Results and Analysismentioning

confidence: 54%

“…The reasons are the incident wave angle is in normal direction with the refracted part of the breakwater and effect of the trench is remarkably revealed. The following estimations can be made in terms of wave height reduction due to the presence of the trench: 42.3% for d 2 = 1:5d 1 , 43.5% for d 3 = 2d 1 , and 36% for d 4 = 2:5d 1 .…”

Section: Numerical Results and Analysismentioning

confidence: 99%

“…where H (1) 0 is the Hankel function of the first kind of order zero and R = ffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffiffi ffi (x 0 À x) 2 + (y 0 À y) 2 q . (x, y) represents the arbitrary points in the fluid regions, whereas (x 0 , y 0 ) shows the points of boundaries in the refracted breakwater and the trench.…”

Section: Theoretical Developmentmentioning

confidence: 99%

“…One example would be to construct the section of a corner into a slit type, absorbed type, or a curved type. [1][2][3][4] The purpose of this study is to reduce the incident wave energy before it reaches the corner of the breakwater by utilizing the dredged region (trench region). When the high-energy sourced waves pass over the trench with discontinuity water depth, the high wave energy level can be reduced.…”

Section: Introductionmentioning

confidence: 99%

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The wave energy scattering by interaction with the refracted breakwater and varying trench depth

Kim

Jun

Lee

2015

Advances in Mechanical Engineering

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The purpose of this study is to estimate the wave height located at the front face of the offshore refracted breakwater when the trench is dredged in the exterior region of the breakwater at various depths. The problems that arise with regard to the different obliquely incident wave field involve having two-dimensional planes and having the configuration of the trench region designated by a single horizontal rectangular system. The numerical approach involves applying the Green function based on the boundary integral approach. The results of the present numerical works are illustrated. The ratio of the wave height reduction at the front face of the refracted breakwater is shown to be more than 25% due to the trench's effect on the seabed. The corner of the refracted breakwater is where the wave energy is concentrated, and through utilizing the trench, the wave energy can be subdued to reduce the damage on the breakwater. The trench brings about a reduction in wave amplitude and wave energy in, around, and directly downstream of the trench.

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Section: Numerical Results and Analysismentioning

confidence: 54%

Section: Numerical Results and Analysismentioning

confidence: 99%

Section: Theoretical Developmentmentioning

confidence: 99%