한국해양공학회:학술대회논문집 (Proceedings of the Korea Committee for Ocean Resources and Engineering Conference)
- 한국해양공학회 2004년도 학술대회지
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- Pages.210-211
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- 2004
주기 회전하는 원형주상체 주위 유동장의 수치 시뮬레이션
Numerical simulation on laminar flow past an oscillating circular cylinder
- MOON JIN-KOOK (Dept. of NAOE, Pusan National University) ;
- PARK JONG-CHON (Dept. of NAOE, Pusan National University) ;
- CHUN HO-HWAN (Dept. of NAOE, Pusan National University)
- 발행 : 2004.11.01
초록
The effect of oscillating on the unsteady laminar flow past a circular cylinder is numerically investigated in the present study. Our study is to analyze the vortex formation behind a circular cylinder for different rotary oscillation conditions. And then we are study to portray the unsteady dynamics of wake flows. We decide lock-on region by observing the phase switching phenomena We classify the vortex formation patterns in the primary lock-on region The present study is to identify the quasi-periodic state around lock-on region. At the boundary between lock-on and non-lock-on the shedding frequency is bifurcated. After the bifurcation, one frequency follow the forcing frequency (
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