Title page for etd-0217111-155136


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URN etd-0217111-155136
Author Kuang-Li Huang
Author's Email Address No Public.
Statistics This thesis had been viewed 5580 times. Download 1467 times.
Department Marine Environment and Engineering
Year 2010
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Wave energy capture system – surge motion tank
Date of Defense 2011-01-21
Page Count 141
Keyword
  • tuned mass damper
  • liquid tank
  • wave energy capture system
  • coupled motions
  • tuned liquid damper
  • Dynamic Vibration Absorber System
  • Abstract Liquid sloshing in a 2D tank applied on a wave energy capture system and reducing the oscillation of an offshore platform are discussed in this study. A fully nonlinear time-independent finite difference method and the forth-order Runge-Kutta method are implemented to solve the coupled motions of liquid sloshing in a 2D tank with a floating platform. When the external forcing frequency of the Dynamic Vibration Absorber System composed by a tuned liquid damper and a tuned mass damper is identical to the fundamental frequency of the tank, the external force can be effectively diminished by the sloshing-induced force. In the meantime, the maximum effect of tuned mass damper on reducing the amplitude of the floating platform appears. When the frequency of external forcing is close to the first natural frequency of the liquid tank, the coupled effect between the motions of both the tank and the platform can effectively reduce the vibration of the platform and the total energy of the whole system. The Eigenfrequency of a wave capture system is formed by the coupled effect of a liquid tank and a wave capture system. When the excitation frequency of the wave capture system is near its Eigenfrequency, the sloshing-induced force is much larger than that of external and the maximum displacement of the wave energy capture system occurs. As a result, the wave energy capacity of the wave capture system can be averagely increased to 150% by the influence of liquid sloshing in the tank.
    Advisory Committee
  • Kuo-Tung Chang - chair
  • Wen-Juinn Chen - co-chair
  • Bang-Fuh Chen - advisor
  • Files
  • etd-0217111-155136.pdf
  • indicate access worldwide
    Date of Submission 2011-02-17

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