Three-dimensional analysis of wave attenuation by a submerged, horizontal, bottom-mounted, flexible shell |
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| Authors: | Fata D. E. Dewi Stergios I. Liapis Raymond H. Plaut |
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| Affiliation: | a Friede and Goldman, 935 Gravier Street, New Orleans, LA 70112, USA;b Shell E&P Technology Co., Houston, TX 77001-0481, USA;c Charles E. Via, Jr. Department of Civil Engineering, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0105, USA |
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| Abstract: | The effectiveness of a submerged, bottom-mounted, flexible breakwater is investigated numerically. The structure is a horizontal, hemicylindrical shell filled with water. Potential flow is considered, and steady-state motions caused by monochromatic waves are studied. The three-dimensional response to normal and oblique waves is determined using the finite element method and a boundary integral method. Results are presented for a shell with a length of 150 m and a radius of 4 m, situated in water having a mean depth of 6 m. They indicate that the structure is effective in reducing the incident wave intensity over a wide range of frequencies. |
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| Keywords: | submerged breakwater wave attenuation hemicylindrical shell vibrations oblique waves potential flows fluid-structure interaction |
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