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URN etd-0907110-174347
Author Pei-chi Huang
Author's Email Address funsoo@gmail.com
Statistics This thesis had been viewed 5343 times. Download 11 times.
Department Marine Environment and Engineering
Year 2010
Semester 1
Degree Master
Type of Document
Language zh-TW.Big5 Chinese
Title Study on Wave Field with Multiple Porous Layers
Date of Defense 2010-09-03
Page Count 145
Keyword
  • permeable structure
  • porous media
  • Abstract Wave interaction with a rubble-mound breakwater has been studied experimentally in the thesis.
    The breakwater may contain multi-layer anisotropic but homogeneous media. Fluid outside the
    porous layer field is assumed to incompressible and viscous,and the flow field is irrational. The study
    applies the velocity potential to describe the wave field with small amplitude incident wave.
    Under the consideration of linearity, Analytical solution is solved from boundary value
    program by the method of separation of variables. It bases on dispersion equation. Try to find the
    range and position of the complex eigenvalues in each porous column and to solve the velocity
    potential in the field by numerical methods. Wave reflection, transmission, and energy dissipation
    with a rubble-mound breakwater have been investigated experimentally, and consider the wave close
    linear wave theory, the wave steepness smaller than 0.035. Three different sizes of grain are used to
    construct the porous base, they are 16mm, 25mm, and 35mm, respectively. Single and double layers
    of porous base are considered.
    Some of the reflection coefficient are convergence, but they are the unreasonable results.
    Maybe the trouble is in the process of the computation with determination of .eigenvalues. When the
    wave has long period, the double-layer porous model reduces more wave energy, when the wave has
    short period, the single-layer porous and the smaller porous material model can disappears more wave
    energy. The characteristic of internal resistance in the porous has the difference along with the wave
    period. When the model crest is higher than the sea level, the consumption of wave energy are more
    when it is shorter along with the wave period. As a submerged breakwater, the effect for disappears
    wave energy to be limited.
    Advisory Committee
  • Tai-Wen Hsu - chair
  • I-Fan Tseng - co-chair
  • Yung-Fang Chiu - co-chair
  • Yang-Yih Chen - co-chair
  • Chung-Pan Lee - advisor
  • Files
  • etd-0907110-174347.pdf
  • indicate in-campus access in a year and off_campus not accessible
    Date of Submission 2010-09-07

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