직립벽 앞에 놓인 일정깊이 잠긴 슬릿판에 의한 반사율 해석

Abstract

Based on the eigenfunction expansion method, the interaction between monochromatic waves anda partially immersed sloted plate with a back wal has ben investigated. Analytical results show that thereflection coefficients by a partialy immersed sloted plate depend on the porosity, immersed depth, chamberwidth, incidence angle and wave frequency. It is found that the reflection coeficient has minimum value withinentire frequency range when the porosity has optimal value 0.1. Comparison between the analytical results andthe experimental results(Zhu,2001) of reflection coefficients is made for various chamber widths, immerseddepths and wave periods with good agreement. The present analytic method can account adequately for energydisipation caused by flow separation behind a sloted plate and provide the design informations for theconstruction of slit caison breakwater.