On an Analysis of Reflection and Transmission Coefficients by a Vertical Slit Plate

J. Ocean Eng. Technol. 2002;16(3):1-7.

직립 슬릿판에 의한 반사율과 투과율 해석

조일형,김남형

제주대학교 해양산업공학부,제주대학교 지구환경시스템공학부

Keywords: Slit Plate, Reflection Coefficient, Transmission Coefficient, Energy Loss Coefficient, Linear Potential Theory, Model Test, Wave Absorber

핵심용어: 슬릿판, 반사율, 투과율, 에너지 손시율, 선형포텐셜 이론, 모형실험, 소파제

Abstract

In this paper, a numerical model to analyze the performance of a vertical slit-type wave absorber is developed under the assumption of inviscid water waves. The formulation combines the linear potential theory with a semi-empirical description of the eddy-shedding at a slit-type wave absorber. We investigated the reflection coefficients over a wide frequency range for a vertical slit-type wave absorber both with and without a solid rear wall. Model test was conducted at KRISO' s two dimensional wave tank to validate the theoretical results. It is found that the agreement between theoretical results and experimental data is surprisingly good. We found that the wave absorbing system using a vertical slit plate has sufficient potentials for breakwaters for cean development