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DYNAMIC RESPONSE OF FLOATING WIND TURBINE UNDER CONSIDERATION OF DYNAMIC BEHAVIOR OF CATENARY MOORING-LINES
Guo SX(郭双喜); Li YL; Li M(李敏); Chen WM(陈伟民); Fu YQ; Chen, WM (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China.
会议录名称PROCEEDINGS OF THE ASME 36TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2017, VOL 10
2017
会议名称36th ASME International Conference on Ocean, Offshore and Arctic Engineering
会议日期JUN 25-30, 2017
会议地点Trondheim, NORWAY
摘要

Recently, wind turbine has been developed from onshore area to offshore area because of more powerful available wind energy in ocean area and more distant and less harmful noise coming from turbine. As it is approaching toward deeper water depth, the dynamic response of the large floating wind turbine experiencing various environmental loads becomes more challenge. For examples, as the structural size gets larger, the dynamic interaction between the flexible bodies such as blades, tower and catenary mooring-lines become more profound, and the dynamic behaviors such as structural inertia and hydrodynamic force of the mooring-line get more obvious. In this paper; the dynamic response of a 5MW floating wind turbine undergoing dfflerent ocean waves is examined by our FEM approach in which the dynamic behaviors of the catenary mooring-line are involved and the integrated system including flexible multi-bodies such as blades, tower, spar platform and catenaries can be considered. Firstly, the nonlinear dynamic model of the integrated wind turbine is developed. Different from the traditional static restoring force, the dynamic restoring force is analyzed based on our 3d curved flexible beam approach where the structural curvature changes with its spatial position and the time in terms of vector equations. And, the modified finite element simulation is used to model a flexible and moving catenary of which the hydrodynamic load depending on the mooring-line's motion is considered Then, the nonlinear dynamic governing equations is numerically solved by using Newmark-Beta method. Based on our numerical simulations, the influences of the dynamic behaviors of the catenary mooring-line on its restoring performance are presented. The dynamic responses of the floating wind turbine, e.g. the displacement of the spar and top tower and the dynamic tension of the catenary, undergoing various ocean waves, are examined. The dynamic coupling between different spar motions, i.e. surge and pitch, are discussed too. Our numerical results show: the dynamic behaviors of mooring-line may significantly increase the top tension, particularly, the peak-trough tension gap of snap tension may be more than 9 times larger than the quasi-static result. When the wave frequency is much higher than the system, the dynamic effects of the mooring system will accelerate the decay of transient items of the dynamic response; when the wave frequency and the system frequency are close to each other, the displacement of the spar significantly reduces by around 26%. Under regular wave condition, the coupling between the surge and pitch motions are not obvious; but under extreme condition, pitch motion may get about 20% smaller than that without consideration of the coupling between the surge and pitch motions.

关键词Model Test Spar Systems Dynamic Response Floating Wind Turbine Catenary Mooring-line Dynamic Tension
WOS记录号WOS:000417228200074
资助信息The authors of this paper would like to thank the financial supports provided by the National Natural Sciences Foundation (Grant No. 11232012 and 11372320).
ISBN号978-0-7918-5778-6
收录类别CPCI-S ; EI
语种英语
引用统计
文献类型会议论文
条目标识符http://dspace.imech.ac.cn/handle/311007/72176
专题流固耦合系统力学重点实验室
通讯作者Chen, WM (reprint author), Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China.
作者单位1.[Guo, Shuangxi] AVIC Composite Corp LTD, Natl Key Lab Adv Composites, Beijing 100095, Peoples R China
2.[Guo, Shuangxi
3.Chen, Weimin
4.Fu, Yiqin] Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China
5.[Li, Yilun] Beijing Univ Aeronaut & Astronaut, Sinofrench Engn Sch, Beijing 100191, Peoples R China
6.[Li, Min] Beijing Univ Aeronaut & Astronaut, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China
7.[Chen, Weimin] Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
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Guo SX,Li YL,Li M,et al. DYNAMIC RESPONSE OF FLOATING WIND TURBINE UNDER CONSIDERATION OF DYNAMIC BEHAVIOR OF CATENARY MOORING-LINES[C]. NEW YORK:AMER SOC MECHANICAL ENGINEERS,2017.
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