Wave action on a vertical wall with a submerged horizontal plate: Analysis of phase variation of forces and probability of exceedance
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
In this study, experiments on the wave forces and moments acting on a Vertical Wall (VW) and a VW attached to a horizontal plate (VWHP) subjected to regular and random wave fields were conducted. In the experiments, the phase lag between the horizontal and vertical wave forces was analyzed for the regular waves and the probability density was analyzed for the random waves. The experimental results showed that attaching a horizontal plate with a length equal to the water depth to a VW at a position corresponding to 28.5% of the water depth reduced the 95% non-exceedance value of the normalized horizontal wave force from 1.05 to 0.8 for a relative water depth of d/Lp ¼ 0.1, where d is the water depth and Lp is the wavelength of the peak period. For d/Lp ¼ 0.5, the corresponding reduction was from 0.6 to 0.17. The results of this study can be used to optimize the design of VW- and VWHP-type marine structures.
Abstract
In this study, experiments on the wave forces and moments acting on a Vertical Wall (VW) and a VW attached to a horizontal plate (VWHP) subjected to regular and random wave fields were conducted. In the experiments, the phase lag between the horizontal and vertical wave forces was analyzed for the regular waves and the probability density was analyzed for the random waves. The experimental results showed that attaching a horizontal plate with a length equal to the water depth to a VW at a position corresponding to 28.5% of the water depth reduced the 95% non-exceedance value of the normalized horizontal wave force from 1.05 to 0.8 for a relative water depth of d/Lp ¼ 0.1, where d is the water depth and Lp is the wavelength of the peak period. For d/Lp ¼ 0.5, the corresponding reduction was from 0.6 to 0.17. The results of this study can be used to optimize the design of VW- and VWHP-type marine structures.
참고문헌 (30)
- AlYousif, A., "Hydrodynamic characteristics of a vertical wall with an immersed horizontal plate subjected to regular and random waves", Ocean. Eng, 236, pp.109489~ (2021)[DOI]
- Chioukh, N., "Meshless method for analysis of permeable breakwaters in the proximity of a vertical wall", China Ocean Eng, 33, pp.148~159 (2019)[DOI]
- Fang, Z., "Generalized analytical solution to wave interaction with submerged multi-layer horizontal porous plate breakwaters", J. Eng. Math, 105, pp.117~135 (2017)[DOI]
- Franco, L., "Vertical breakwaters: Italian experience", Coast. Eng, 22, pp.31~55 (1994)
- Hu, H., "Wave motion over a breakwater system of a horizontal plate and a vertical porous wall", Ocean Eng, 29, pp.373~386 (2002)[DOI]
- Hu, H. H., "Damping effect on waves propagating past a submerged horizontal plate and a vertical porous wall", J. Eng. Mech, 131, pp.427~437 (2005)[DOI]
- Koley, S., "Numerical and experimental modeling of water wave interaction with rubble mound offshore porous breakwaters", Ocean Eng, 218, pp.108218~ (2020)
- Koraim, A., "Hydrodynamic characteristics of porous seawall protected by submerged breakwater", Appl. Ocean Res, 46, pp.1~14 (2014)[DOI]
- Liu, Y., "Wave interaction with a perforated wall breakwater with a submerged horizontal porous plate", Ocean Eng, 34, pp.2364~2373 (2007)[DOI]
- Mohapatra, A. K., "Effect of seabed profiles on the wave interaction of a horizontal submerged plate attached to a vertical wall", 64th Congress of the Indian Society of Theoretical and Applied Mechanics, pp.9~12 (2019), School of Mechanical Sciences and School of Basic Sciences (Mathematics), Indian Institute of Technology Bhubaneswar
- Muni Reddy, M. G., "Hydrodynamic studies on vertical seawall defensed by an offshore low-crested breakwater", Ocean Eng, 32, pp.747~764 (2005)
- Neelamani, S., "Wave transmission and reflection characteristics of a rigid surface and submerged horizontal plate", Ocean Eng, 19, pp.327~341 (1992)
- Neelamani, S., "Wave forces on and water surface fluctuations around a vertical cylinder encircled by a perforated square caisson", Ocean Eng, 27, pp.775~800 (2000)
- Neelamani, S., "Wave forces on a seawater intake caisson", Ocean Eng, 29, pp.1247~1263 (2002)
- Neelamani, S., "Experimental investigation on wave reflection characteristics of slotted vertical barriers with an impermeable back wall in random wave fields", J. Waterw. Port, Coast. Ocean Eng, pp.143~ (2017)[DOI]
- Oumeraci, H., "Probabilistic Design Tools for Vertical Breakwaters" (2001), A. A. Balkema Publishers
- Poguluri, S. K., "Analytical and numerical study of wave interaction with a vertical slotted barrier", Ships Offshore Struct, 16(9), pp.1012~1024 (2020)[DOI]
- Poguluri, S. K., "Wave dissipation over a horizontal slotted plate with a leeside vertical seawall: analytical and numerical approaches", Coast Eng. J, 63, pp.52~67 (2020)[DOI]
- Sadeghi, K., "An overview of construction and installation of vertical breakwaters", Int. J. Innovative Technol. Explor. Eng, 7(3), pp.2278~3075 (2017)
- Sainflou, M., "Treatise on Vertical Breakwaters" (1928), Annales Des Points et Chaussees
- Silvester, R., "Wave reflection at sea walls and breakwaters", Proc. Inst. Civ. Eng. Civ. Eng, 51, pp.123~131 (1972)
- Sumer, B. M., "Scour at the head of a vertical-wall breakwater", Coast. Eng, 29, pp.201~230 (1997)
- Design of Vertical Breakwaters, "Takahashi, S", Port and Airport Research Institute, ~, pp.Revised Version of Reference Document No. 34 (2002)
- Tian, Z., "Study on reflection characteristic of a curved winglike submerged structure before a vertical wall", Int. J. Offshore Polar Eng, 30, pp.340~348 (2020)[DOI]
- Vijayalakshmi, K., "An experimental study on regular wave loads on a perforated circular caisson and suction pipe configuration", J. Ocean Technol, 2, pp.50~63 (2007)
- Wu, J., "Wave reflection by a vertical wall with a horizontal submerged plate", Ocean Eng, 25, pp.767~779 (1998)
- Yip, T. L., "Perforated wall breakwater with internal horizontal plate", J. Eng. Mech, 126, pp.533~538 (2000)[DOI]
- Zhao, Y., "Oblique wave scattering by a submerged porous breakwater with a partially reflecting sidewall", J. Mar. Sci. Technol, 25, pp.383~392 (2017)[DOI]
- Zhao, Y., "Analytical study for oblique wave interaction with a submerged horizontal perforated plate near a partially reflecting vertical wall", Meccanica, 56, pp.1751~1770 (2021)[DOI]
- Zhu, S., "Investigations on the reflection behaviour of a slotted seawall", Coast. Eng, 43, pp.93~104 (2001)[DOI]