투과성 잠제에 의한 쓰나미의 전파시간 지연에 관한 수치모의

• 영문명: A Numerical Simulation on Delay Time of Tsunami Propagation due to Permeable Submerged Breakwater
• 발행기관: 한국연안방재학회
• 저자명: 허동수(Dong-Soo Hur) 이우동(Woo-Dong Lee) 장병진(Byeong-Jin Jang)
• 간행물 정보: 『한국연안방재학회지』제2권 제4호, 197~205쪽, 전체 9쪽
• 주제분류: 사회과학 > 사회과학일반
• 파일형태: PDF
• 발행일자: 2015.10.30

영문 초록

In order to analysis the delay times of tsunami propagation due to the crown depths of a permeable submerged breakwater, a numerical wave tank(LES-WASS-3D; Lee et al., 2014) with non-reflected wave generation system of tsunami(solitary wave) was used in this study. Then, the model were compared with Fenton’s theoretical wave celerity(3rd-solitary wave theory) for its verification. The numerical simulations have been carried out to understand the delay times of tsunami propagation with various rations of crown depth to incident wave height. It is shown that the delay times by permeable submerged breakwater is 0.3~0.65sec smaller than wave transmission through flat bottom because of tsunami energy loss inside the porous media. In addition, the simulation results due to variation of crown depths show the wave attenuation up to 24~68% at 2Leff(effective wave length) away from the breakwater.

목차

1. 서 론

2. 수치모델(LES-WASS-3D)의 개요

3. 수치모형실험의 개요

4. 수치해석결과

5. 결 론

키워드

LES-WASS-3D Tsunami Solitary wave Delay time Permeable submerged breakwater