Hydrodynamic performance of a T-shaped floating breakwater
The comprehensive utilization of floating breakwaters, specially acting as a supporting structure for offshore marine renewable energy explorations, has received more and more attention recently. Based on linear water-wave theory, the hydrodynamic performance of a T-shaped floating breakwater is semi-analytically investigated through the matched eigenfunction expansion method (MEEM). Auxiliary functions, to speed up the convergence and improve the accuracy in the numerical computations, are introduced to represent the singular behavior of fluid field near the lower salient corners of the structure. The effects of the height and installation position of the vertical screen on the reflection and transmission coefficients, dynamic response and wave forces are examined. It is found that the presence of the screen shifts the resonance frequency of RAO for both surge and pitch modes to the low-frequency area, while has no effect on heave mode. The identical added masses, damping and transmission coefficients can be obtained in the cases where the screen holds the same distance away from the longitudinal central axis of the upper box-type structure. Moreover, a relatively small pitch response can be achieved in a wide wave–frequency range, when the breakwater is Γ-shaped.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/01411187
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Supplemental Notes:
- © 2018 Elsevier Ltd. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Deng, Zhengzhi
- Wang, Lin
- Zhao, Xizeng
- Huang, Zhiyong
- Publication Date: 2019-1
Language
- English
Media Info
- Media Type: Digital/other
- Features: Figures; References; Tables;
- Pagination: pp 325-336
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Serial:
- Applied Ocean Research
- Volume: 82
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0141-1187
- Serial URL: https://www.sciencedirect.com/journal/applied-ocean-research
Subject/Index Terms
- TRT Terms: Floating breakwaters; Hydrodynamics; Water waves; Wave motion
- Uncontrolled Terms: Eigenfunctions
- Subject Areas: Hydraulics and Hydrology; Marine Transportation;
Filing Info
- Accession Number: 01690326
- Record Type: Publication
- Files: TRIS
- Created Date: Dec 28 2018 4:38PM