Field Observation and Numerical Modeling for Secondary Undulation

J. Ocean Eng. Technol. 2002;16(2):27-31.

항만 부진동에 관한 현장관측 및 수치실험

김규한,김덕중,배기성

관동대학교 건설환경시스템공학부,관동대학교 건설환경시스템공학부,경상대학교 해양과학과 해양토목공학과

Keywords: Secondary Undulation, Field Observation, Finite Element Method, Long Period Wave

핵심용어: 항만 부진동, 현장관측, 유한요소법, 장주기파

Abstract

The purpose of this study is to investigate the variation of resonance that is possible caused by construction of new port in a practical sea area between the existing port and the new one. The research of amplification that of the sea area was accomplished for the variation of resonance. In this study, long period wave that is observed continuously in the practical sea area was analyzed, and then secondary undulation was reproduced by numerical analysis. As a result of numerical analysis, the first mode resonant periods in the existing port is 640sec, and in the new one is 500sec. On the other hand, we know there is long period wave of 500sec from analyzation of field datas. Because that period this period is the resonant period in the new port. There is also the possibility of secondary undulation cause of resonant.