Chapter
Dec 31, 2015
Bottom Turbulent Boundary Layer in Wave-Current Co-Existing Systems
Authors: Toshiyuki Asano and Yuichi IwagakiAuthor Affiliations
Publication: Coastal Engineering 1984
Abstract
This study presents a new mathematical method calculating the water particle velocity in the wave-current co-existing systems. A boundary layer thickness Δw in the co-existing system is expected to be variable with the water particle velocity ratio of wave component to current component. In this method, the boundary layer equation is solved as a free boundary problem by treating Δw as an unknown boundary value. Several characteristics of the turbulent boundary layer such as the friction factor, friction velocity, boundary layer thickness, etc. are calculated by this method and the effect of the wave-current velocity ratio on them is discussed. Furthermore, the velocity reduction of the current due to wave superimposing is investigated.
In addition, near-bottom velocities are measured by a laser-doppler velocimeter in the pure current, the pure wave and the wave-current co-existing fields. These results are compared with calculated ones by this mathematical method.
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Published In
Coastal Engineering 1984
Pages: 2397 - 2413
Copyright
© 1985 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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Authors
Affiliations
Toshiyuki Asano
Research Associate, Kyoto University
Yuichi Iwagaki
Professor, Kyoto University, M. of ASCE Yoshida-Honmachi, Sakyo-ku Kyoto 606, Japan
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.