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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.10
- 수록면
- 341 - 350 (10page)
이용수
초록· 키워드
오류제보하기
A series of model tests was carried out to investigate the vortex-induced vibration (VIV) characteristics of a free hanging PVC pipe under forced oscillation conditions. The prescribed displacement with a period and amplitude was forced at the top of the riser. The motion of the riser along its length was measured with underwater cameras in three dimensions. The top-excited responses in the inline direction and vortex-induced vibration in the cross-flow direction were examined in the time and frequency domains. Multi-peak frequencies in the VIV were demonstrated to be strongly dependent upon the Keulegan-Carpenter number, corresponding with the results of Blevin. It was found that the Reynolds numbers (excitation period) was a critical parameter for the dominant VIV characteristics, even under the condition of using the same Keulegan-Carpenter number, under the top-excited condition. In the resonance at the nth natural frequency by the forced-motion induced VIV frequency, the riser responded with a large amplitude and forced frequency, dominantly in the VIV CF direction.
목차
ABSTRACT
1. 서론
2. 모형시험
3. 결과 및 고찰
4. 결론
References
참고문헌 (12)
참고문헌 신청
Blevin R.D., 2001. Flow-Induced Vibration. Second edition.
Gustafsson, A., 2012. Analysis of Vortex-Induced Vibrations of Risers. Master’s Thesis, Chalmers University of Technology, Gothenburg, Sweden.
Joseph, R.S., Wang, J., Ong, M.C., Jakobsen, J.B., 2017. Vortex-induced Vibration (VIV) Effects of a Drilling Riser Due to Vessel Motion. First Conference of Computational Methods in Offshore Technology(COTech2017), 276, 1-10.
Jung, D.H., Kwon, Y.J., Park, B.W., Jung, J.H., Choi, J.S., Cho, S.K., Sung, H.G., 2018. Study on the Measurement System of Behavior of a Slender Structure Using an Underwater Camera Which is Applied in DOEB. Journal of Navigation and Port Research, 42, 1-7.
Liang, S., Wang, J., Hu, Z., 2018. Vortex-induced Vibration of a Circular Cylinder with Fairings. Proceedings of the Twentyeighth International Ocean and Polar Engineering Conference, 1, 966-970.
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UCI(KEPA) : I410-ECN-0101-2018-454-003536126