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UBC Theses and Dissertations
Numerical model of wave effects on permeable vertical barriers above the seabed Yang, Gang
Abstract
This thesis describes a numerical model used to predict the interaction of a regular small amplitude wave train with a thin permeable vertical barrier extending from the water surface to some distance above the seabed. The case of wave interactions with a pair of such barriers is also treated. The approach used is based on an eigenfunction expansion method and utilizes a boundary condition at the barrier surface which accounts for energy dissipation within the barrier. Comparisons of results based on the method have been carried out with those of previous numerical studies for related situations, and close agreement has been obtained in all such cases. A selection of results based on the method are presented for the transmission, reflection, and energy dissipation coefficients, the wave runup, and the maximum horizontal force on the barrier. These exhibit various features of interest which are discussed. The numerical model is written in the FORTRAN language. With appropriate input, it can be used to calculate wave interactions with one or two barriers under a wide range of conditions. It is confirmed that the results of the numerical model are consistent for various limiting conditions including those of a solid barrier, a fully transparent barrier, and a barrier extending to the seabed. Overall, the numerical model is found to provide a reasonably flexible and reliable means of predicting wave effects on thin permeable vertical barriers.
Item Metadata
Title |
Numerical model of wave effects on permeable vertical barriers above the seabed
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1996
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Description |
This thesis describes a numerical model used to predict the interaction of a regular small
amplitude wave train with a thin permeable vertical barrier extending from the water
surface to some distance above the seabed. The case of wave interactions with a pair of
such barriers is also treated. The approach used is based on an eigenfunction expansion
method and utilizes a boundary condition at the barrier surface which accounts for energy
dissipation within the barrier. Comparisons of results based on the method have been
carried out with those of previous numerical studies for related situations, and close
agreement has been obtained in all such cases.
A selection of results based on the method are presented for the transmission,
reflection, and energy dissipation coefficients, the wave runup, and the maximum
horizontal force on the barrier. These exhibit various features of interest which are
discussed.
The numerical model is written in the FORTRAN language. With appropriate input, it
can be used to calculate wave interactions with one or two barriers under a wide range of
conditions. It is confirmed that the results of the numerical model are consistent for various
limiting conditions including those of a solid barrier, a fully transparent barrier, and a
barrier extending to the seabed.
Overall, the numerical model is found to provide a reasonably flexible and reliable
means of predicting wave effects on thin permeable vertical barriers.
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Extent |
2834303 bytes
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Genre | |
Type | |
File Format |
application/pdf
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Language |
eng
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Date Available |
2009-03-09
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Provider |
Vancouver : University of British Columbia Library
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Rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.
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DOI |
10.14288/1.0050366
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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Graduation Date |
1997-05
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Campus | |
Scholarly Level |
Graduate
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Aggregated Source Repository |
DSpace
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Item Media
Item Citations and Data
Rights
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use.