지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수
초록· 키워드
오류제보하기
ANSYS multi-physics software was applied to solve the coupled dynamic problem related to a full-scale TIP foundation for floating wind turbines. In this coupled dynamics simulation, the forced oscillation imposed on the tethers' top resulting from the sway of the wind turbine platform and the self-excited vortex-induced vibration (VIV) along the tether span have been taken into account. The stability of this tensioned tether system has been validated in the form of separate static and dynamic analyses. The dynamic characteristics of the tensioned tether linked to the floating wind turbine were analyzed by the resultant modal form and its corresponding vortex shedding pattern. The calculated result shows that even a slight forced oscillation imposed on the tethers' top leads to the VIV amplification and enhances the risk of instability in the case of low pretension. It is also found that the "synchronization" would be aggravated when the top tension decreases and the "2P" vortex shedding mode takes place. The increased top tension imposed on the tethers contributes to the stability of the tensioned legs by diminishing the oscillation amplitude markedly.
목차
ABSTRACT
1. Introduction
2. Numerical Solution
3. FSI Analysis
4. Conclusions
Acknowledgements
References
참고문헌 (13)
참고문헌 신청
1. [기타자료] - ANSYS / 2007 / ANSYS CFX-Solver Modeling Guide (V11 SP1)
2. [학술지(정기간행물)] - Aranha, J.A.P / 2001 / Dynamic Tension in Risers and Mooring Lines / Journal of Applied Ocean Research 23 : 263 ~ 281
3. [학술지(정기간행물)] - Chandrasekaran, S / 2006 / Stability Analysis of TLP Tethers / Ocean Engineering 33 : 471 ~ 482
4. [학술지(정기간행물)] - Chatjigeorgiou, I.K / 2002 / Bound and Unbounded Transverse Response of Parametrically Excited Vertical Marine Risers and Tension Cable Legs / Journal of Applied Ocean Research 24 : 341 ~ 354
5. [단행본] - Chen, Z.S. / 2008 / Numerical Simulation of a Large-scale Riser with Vortex-induced Vibration / ISOPE PACOMS : 121 ~ 128
2. [학술지(정기간행물)] - Aranha, J.A.P / 2001 / Dynamic Tension in Risers and Mooring Lines / Journal of Applied Ocean Research 23 : 263 ~ 281
3. [학술지(정기간행물)] - Chandrasekaran, S / 2006 / Stability Analysis of TLP Tethers / Ocean Engineering 33 : 471 ~ 482
4. [학술지(정기간행물)] - Chatjigeorgiou, I.K / 2002 / Bound and Unbounded Transverse Response of Parametrically Excited Vertical Marine Risers and Tension Cable Legs / Journal of Applied Ocean Research 24 : 341 ~ 354
5. [단행본] - Chen, Z.S. / 2008 / Numerical Simulation of a Large-scale Riser with Vortex-induced Vibration / ISOPE PACOMS : 121 ~ 128
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UCI(KEPA) : I410-ECN-0101-2010-559-002627168