Three-dimensional analysis of submerged, moored, horizontal, rigid cylinders used as breakwaters |
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Authors: | Timothy W Mays Raymond H Plaut Stergios I Liapis |
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Institution: | a Charles E. Via, Jr Department of Civil Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0105, USA;b Shell E and P Technology Co., Houston, TX 77001-0481, USA |
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Abstract: | Wave attenuation by moored cylinders is considered. The cylinders are submerged with their axes horizontal. Linear potential theory is applied. Three-dimensional motions of the cylinders subjected to normal and oblique monochromatic waves are determined using potential theory and a boundary integral method. Each cylinder has length 9.1 m (30 ft) and radius 1.5 m (5 ft), with its top 1.5 m (5 ft) below the still water line and its bottom 3.0 m (10 ft) above the seabed. Free-surface elevations are obtained for a single cylinder and for two cylinders in series. These configurations are effective wave barriers for a range of wave frequencies and incident angles. |
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Keywords: | submerged breakwater moored cylinder wave attenuation vibrations oblique waves potential flow 3-D fluid– structure interaction |
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