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논문

PIV시스템을 이용한 규칙파중 2차원 사각형 부유식 구조물 주위의 유통특성 연구

Esperimental Study of Flow Characteristics of Regular Wave Interacting with Rectangular Floating Structure Using PIV Technique

전호환|정광효
한국해양공학회 (The Korean Society of Ocean Engineers (KSOE))|2006.12|한국해양공학회지 (Journal of Ocean Engineering and Technology)|제20권 제6호|pp. 41-53

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참고문헌

키워드

Regular wave 규칙파Particle image velocimetry 입자영상유속계Vortex 와류Turbulence 난류Roll motion 횡요운동
주제분류해양공학

초록

Abstract

This experimental study investigated the flow characteristics for regular waves passing a rectangular floating structure in a two-dimensional wave tank. The particle image velocimetry (PIV) was employed to obtain the velocity field in the vicinityof the structure. The phase average was used to extract the mean flow and turbulence property from repeated instantaneous PIV velocity profiles.The mean velocity field represented the vortex generation and evolution on both sides of the structure. The turbulence properties, including the turbulence length scale and the turbulent kinetic energy budget were investigated to characterize the flow interactionbetween the regular wave and the structure. The results show the vortex generated near the structure corners,which are known as the eddy-making damping or viscous damping. However, the vortex induced by the wave is longer than the roll natural period of the structure, whichpresents the phenomena opposing the roll damping effect; that is, the vortex may increase the roll motion under the wave condition longer than the roll natural period.1. 서 론

참고문헌 (24)

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관련 논문AI추천

Flow Pattern around Floating Breakwater Using PIV Technique서성부, 정광효한국해양공학회 · 한국해양공학회지2010 · 제24권 제3호부방파제의 유동과 와의 생성 및 소멸에 관한 연구김가야, 김명규, 윤종성, 정광효한국해양공학회 · 한국해양공학회지2008 · 제22권 제3호연직판형 부소파제의 수리학적 특성과 동적거동김도삼, 손병규, 신종근, 양용수, 정성재한국수산과학회 · 한국수산과학회지2005 · 제38권 제5호PIV기법을 이용한 정사각 실린더의 후류에 관한 실험적 연구이종붕, 장태현한국마린엔지니어링학회 · 한국마린엔지니어링학회지2004 · 제28권 제2호PIV기법을 활용한 쇄파의 유동구조 해석도덕희, 이언주, 조효제한국해양공학회 · 한국해양공학회지2009 · 제23권 제1호Experimental Study on Nonlinearity Characteristics Near the Free Surface in the Regular Wave Condition서성부, 정광효, 조효제, 최한석, 최해진한국해양공학회 · 한국해양공학회지2010 · 제24권 제1호

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