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Effect of Energy Loss by a Vertical Slotted Wall
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 Title & Authors
Effect of Energy Loss by a Vertical Slotted Wall
Cho, Il-Hyoung;
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The eigenfunction expansion method is appled for the wave scattering by a vertical slotted, where both the inertial and quadratic drag terms are involved. Quadratic drag term representing the energy loss is linearized by the application of socalled equivalent linearization. The drag coefficient, which was empirically determined by Yoon et al.(2006) and Huang(2007) is used. Analytical results are verified by comparison to the experimental results conducted by Kwon et al.(2014) and Zhu and Chwang(2001). Using the developed design tool, the effect of energy loss by a vertical slotted wall is estimated with various design parameters, such as porosity, submergence depth, shape of slits and wave characteristics. It is found that the maximum value of energy loss across the slotted wall is generated at porosity value less than P = 0.1. The present solutions can provide a good predictive tools to estimate the wave absorbing efficiency by a slotted-wall breakwater.
slotted wall;transmission coefficient;energy loss coefficient;wave force;porosity;
 Cited by
Bennett, G.S., McIver, P., and Smallman, J.V. (1992). A mathematical model of a slotted wavescreen breakwater, Coastal Engineering, 18, 231-249. crossref(new window)

Cho, I.H. and Kim, N.H. (2002). On an analysis of reflection and transmission coefficients by a vertical slit plate. Journal of Ocean Engineering and Technology, 16(3), 1-7 (in Korean).

Cho, I.H. and Koh, H.J. (2007). Reflection and transmission coefficients by a circular pile breakwater. Journal of Korean Society of Coastal and Ocean Engineers, 19(1), 38-44 (in Korean).

Cho, I.H. and Kim, M.H. (2013). Transmission of oblique incident waves by a submerged horizontal porous plate, Ocean Engineering, 61, 56-65. crossref(new window)

Chwang, A.T. and Chan, A.T. (1998). Interaction between Porous Media and Wave Motion, Annu. Rev. Fluid Mechanics, 30, 53-84. crossref(new window)

Crowley, S. and Porter, R. (2012). The effect of slatted screens on waves, Journal of Engineering Mathematics, 76, 53-76.

Flagg, C.N. and Newman, J.N. (1971). Sway added-mass coefficients for rectangular profiles in shallow water. Journal of Ship Research, 15, 257-265.

Huang, Z. (2007). Wave interaction with one or two rows of closely spaced rectangular cylinders. Ocean Engineering, 34, 1584-1591. crossref(new window)

Isaacson, M., Premasirl, S. and Yang, G. (1998). Wave interaction with vertical slotted barrier. Journal of Waterway, Port, Coastal, and Ocean Engineering, 124(3), 118-126. crossref(new window)

Kakuno, S. and Liu, P.L.-F. (1993). Scattering of water waves by vertical cylinders. Journal of waterway, Port, Coastal, and Ocean Engineering, 119(3), 302-322. crossref(new window)

Kim, B.H. (1998). Interactions of waves, seabed and structures. PhD dissertation, Seoul National Univ., Seoul, Korea.

Kriebel, D.L. (1992). Vertical wave barriers: wave transmission and wave forces. proceedings of 23th Conference on Coastal Engineering, ASCE, New York, 1313-1326.

Kwon, K.K., Lee, J.I. and Yoon, S.B. (2014). Effect of wall thickness of perforated wall with vertical slits on wave reflection and transmission. Journal of Korean Society of Coastal and Ocean Engineers. 26(6), 343-351 (in Korean). crossref(new window)

Li, Y., Liu, Y. and Teng, B. (2006). Porous effect parameter of thin permeable plates. Coastal Engineering Journal, 48, 309-336. crossref(new window)

Mei, C.C. (1989). The applied dynamics of ocean surface waves. World Scientific, Singapore.

Mei, C.C., Liu, P.L.-F. and Ippen, A.T. (1974). Quadratic loss and scattering of long waves. Journal of Waterway, Harbour and Coastal Engineering Division, ASCE, 100(3), 217-239.

Molin, B. (2011). Hydrodynamic modeling of perforated structures. Applied Ocean Research, 33, 1-11. crossref(new window)

Sollitt, C.K. and Cross, R.H. (1972). Wave transmission through permeable breakwaters. In: Proceedings of the 13th Conference on Coastal Engineering. ASCE, Vancouver, Canada, 1827-1846.

Suh, K.D., Ji, C.H. and Kim, B.H. (2011). Closed-form solutions for wave reflection and transmission by vertical slotted barrier. Coastal Engineering, 58, 1089-1096. crossref(new window)

Taylor, P.J. (1973). The blockage coefficient for flow about an arbitrary body immersed in a channel. Journal of Ship Research, 17(2), 97-105.

Wu, J., Wan, Z. and Fang, Y. (1998). Wave reflection by a vertical wall with a horizontal submerged porous plate, Ocean Engineering, 25(9), 767-779. crossref(new window)

Yoon, S.B., Lee, J.I., Nam, D.H. and Kim, S.H. (2006). Energy loss coefficient of waves considering thickness of perforated wall. Journal of Korean Society of Coastal and Ocean Engineers. 18(4), 321-328 (in Korean).

Zhu, S. and Chwang, A.T. (2001). Investigation on the reflection behaviour of a slotted seawall. Coastal Engineering, 43, 93-104. crossref(new window)