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http://dx.doi.org/10.9765/KSCOE.2015.27.5.295

Effect of Energy Loss by a Vertical Slotted Wall  

Cho, Il-Hyoung (Dept. of Ocean System Engineering, Jeju National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.27, no.5, 2015 , pp. 295-303 More about this Journal
Abstract
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.
Keywords
slotted wall; transmission coefficient; energy loss coefficient; wave force; porosity;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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