Three-Dimensional Analysis of Wave Attenuation by Anchored Hemicylindrical Shell

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dc.contributor.authorDewi, Fata Dwi Endyana Jr.en
dc.contributor.committeechairLiapis, Stergios I.en
dc.contributor.committeememberPlaut, Raymond H.en
dc.contributor.committeememberNeu, Wayne L.en
dc.contributor.committeememberFortune, Jimmie C.en
dc.contributor.committeememberFu, Victoria R.en
dc.contributor.committeememberMcDaniels, Carl O.en
dc.contributor.departmentAerospace and Ocean Engineeringen
dc.date.accessioned2014-03-14T20:48:08Zen
dc.date.adate1998-01-14en
dc.date.available2014-03-14T20:48:08Zen
dc.date.issued1997-08-27en
dc.date.rdate1999-01-14en
dc.date.sdate1997-08-27en
dc.description.abstractThe performance of a flexible structure as a breakwater is investigated numerically. The structure is a hemicylinder and is filled with water of uniform pressure. It is anchored along the sides. Only flexural modes are present. The structure is modeled as an elastic shell using the finite element program ABAQUS. The fluid is assumed to be inviscid and incompressible. The fluid flow is analyzed using a boundary integral method and the integral equation is solved numerically by a panel method. The vibration characteristics of the structure are analyzed both in the absence and presence of water. The hydrodynamic coefficients, forces, and the dynamic response of the structure in waves are obtained as a function of the wave number. Two different water depths of 5 m and 6 m are considered. For each water depth, normal and oblique incident waves are considered. The free surface elevation in front of and behind the structure is evaluated for different wave frequencies and directions. The results indicate that the flexible structure is effective in reducing the incident wave intensity over a wide range of frequencies.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-11197-171225en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11197-171225/en
dc.identifier.urihttp://hdl.handle.net/10919/35761en
dc.publisherVirginia Techen
dc.relation.haspartETD.PDFen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectVibrationen
dc.subjectInflatableen
dc.subjectBreakwateren
dc.subjectWaveen
dc.titleThree-Dimensional Analysis of Wave Attenuation by Anchored Hemicylindrical Shellen
dc.typeThesisen
thesis.degree.disciplineAerospace and Ocean Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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