Title page for etd-0021115-160407


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URN etd-0021115-160407
Author Chuan-yu Lin
Author's Email Address No Public.
Statistics This thesis had been viewed 5570 times. Download 11 times.
Department Marine Environment and Engineering
Year 2014
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Study on the OWC wave power converting system combined with breakwater
Date of Defense 2015-01-19
Page Count 340
Keyword
  • Renewable Energy
  • CFX
  • Numerical Tank
  • Oscillating Water Column converter
  • OWC
  • Abstract The main function of the breakwater is to shielded the traveling waves and it's established to keep the waves in the harbor be stable and prevent the directly impact of the waves from open sea therefore the breakwater will suffer considerable impact from the wave, the current practice is put lots of tetrapods in front of the breakwater to reduce the wave pressure and wave reflection ,but it's always with the high construction coats and also impact the landscape .If we can build a new type of structure that can not only reduce the wave energy in the harbor but also converting the renewable energy for the bay area will be great.The Oscillating Water Column converter is the most common of the wave energy converter nowadays ,we can maximize the conversion efficiency by study the hydrodynamic of OWC under the Specific wave condition to design the optimal geometry of OWC .In this study numerical tank will be build by ANSYS CFX to simulate the OWC reaction with incoming waves .After compared with the liner wave theory can prove the settings in CFX has been chose correctly.
    This study will design 3 kinds of OWC geometric variables , simulate 3 group wave height and 5 group wave period to investigate how the air flow speed ,pressure and reflection affected by the different dimensionless front wall draft , dimensionless chamber length and porosity .The results show that when the dimensionless front wall draft become greater the minimum value of reflection will become show up on the smaller wave sharpness .The relationship between dimensionless chamber length and reflection will along with the dimensionless front wall draft and wave conditions . The results also show that the porosity will affect the reflection and air flow speed .
    Advisory Committee
  • Yang-Yih Chen - chair
  • Chau-Chang Wang - co-chair
  • Hsien-Hua Lee - advisor
  • Files
  • etd-0021115-160407.pdf
  • Indicate in-campus at 3 year and off-campus access at 5 year.
    Date of Submission 2015-01-21

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