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http://dx.doi.org/10.9765/KSCOE.2018.30.1.1

Reflection of Porous Wave Absorber Using Quasi-linear Numerical Model  

Ko, Chang-hyun (Faculty of Wind Energy Engineering, Jeju National University)
Cho, Il-Hyoung (Faculty of Ocean System Engineering, Jeju National University)
Publication Information
Journal of Korean Society of Coastal and Ocean Engineers / v.30, no.1, 2018 , pp. 1-9 More about this Journal
Abstract
In present study, we suggested the quasi-linear model that linearizes the quadratic drag representing the energy loss across the porous plate. The quasi-linear model was solved by Boundary Element Method (BEM) for development of the porous wave absorber suitable for 2-D wave tank. The drag coefficient at the porous plate was newly obtained through comparison of experimental results. It is found that the porous wave absorber with porosity 0.1, submergence depth d/h = 0.1, and inclined angle $10^{\circ}{\leq}{\theta}{\leq}20^{\circ}$ shows the effective wave absorption. Using the developed quasi-linear numerical model, the optimal design of various types of a porous wave absorber will be applied.
Keywords
wave absorber; quasi-linear model; porous plate; reflection coefficient; model test;
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