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Forces on a cylinder due to waves and a colinear current Buckingham, William Richard
Abstract
A series of laboratory experiments was conducted to examine the oscillatory forces" and the wave runup on a vertical, circular, surface piercing, rigid cylinder in the presence of both waves and a colinear current. It was found that a current which ran opposite to the direction of wave propagation reduced the oscillatory force and the runup on the cylinder. The results for a current running in the same direction as the waves were more scattered, with some cases indicating an increase in force while others a decrease. The runup, however, increased in all cases. An innovative numerical technique which is currently under development was applied to this problem. The loads on the cylinder were obtained by a time stepping procedure in which the flow at each time step was calculated by an integral equation method based on Green's theorem. The general results of the numerical method agreed quite well with the experimental observations, within the constraints of some simplifying assumptions.
Item Metadata
Title |
Forces on a cylinder due to waves and a colinear current
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Creator | |
Publisher |
University of British Columbia
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Date Issued |
1982
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Description |
A series of laboratory experiments was conducted to examine the oscillatory forces" and the wave runup on a vertical, circular, surface piercing, rigid cylinder in the presence of both waves and a colinear current. It was found that a current which ran opposite to the direction of wave propagation reduced the oscillatory force and the runup on the cylinder. The results for a current running in the same direction as the waves were more scattered, with some cases indicating an increase in force while others a decrease. The runup, however, increased in all cases.
An innovative numerical technique which is currently under development was applied to this problem. The loads on the cylinder were obtained by a time stepping procedure in which the flow at each time step was calculated by an integral equation method based on Green's theorem. The general results of the numerical method agreed quite well with the experimental observations, within the constraints of some simplifying assumptions.
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Genre | |
Type | |
Language |
eng
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Date Available |
2010-04-16
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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 |
10.14288/1.0062983
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URI | |
Degree | |
Program | |
Affiliation | |
Degree Grantor |
University of British Columbia
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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.