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dc.contributor.advisorJerome J. Connor.en_US
dc.contributor.authorLee, Jooeun, S.M. Massachusetts Institute of Technologyen_US
dc.contributor.otherMassachusetts Institute of Technology. Dept. of Civil and Environmental Engineering.en_US
dc.date.accessioned2011-11-01T19:55:28Z
dc.date.available2011-11-01T19:55:28Z
dc.date.copyright2011en_US
dc.date.issued2011en_US
dc.identifier.urihttp://hdl.handle.net/1721.1/66869
dc.descriptionThesis (S.M.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2011.en_US
dc.descriptionCataloged from PDF version of thesis.en_US
dc.descriptionIncludes bibliographical references.en_US
dc.description.abstractWith the advances in technology, recent tall building design has undergone a shift to the free-style geometric forms in the exuberant and liberal atmosphere. As a height of the building increases, it is more susceptible to vibration caused by wind because of its asymmetric distribution of mass and stiffness, increased flexibility and insufficient inherent damping. This wind-induced motion, in particular crosswind response, endangers the dynamic response of tall structures, the performance of cladding and window, and the habitability of occupants. Therefore, much research on mitigating wind induced excitations of tall buildings has been carried out. This thesis focuses on the effect of shape modification on the wind flow pattern around tall buildings. An appropriate choice of this architectural modification can significantly reduce aeroelastic instabilities. Four aerodynamic modifications to reduce wind-induced responses of a tall building, such as a basic square model, a corner recession model, a 3- step setback model, and a 180 degree helical model, are evaluated through commercial CFD (Computational Fluid Dynamics) software, STAR-CD and compared with results from wind tunnel tests. Based on this comparison, the optimal model to effectively mitigate adverse wind excitations is recommended.en_US
dc.description.statementofresponsibilityby Jooeun Lee.en_US
dc.format.extent140 p.en_US
dc.language.isoengen_US
dc.publisherMassachusetts Institute of Technologyen_US
dc.rightsM.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.en_US
dc.rights.urihttp://dspace.mit.edu/handle/1721.1/7582en_US
dc.subjectCivil and Environmental Engineering.en_US
dc.titleThe role of the aerodynamic modifications of the shapes of tall buildingsen_US
dc.typeThesisen_US
dc.description.degreeS.M.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Dept. of Civil and Environmental Engineering.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Civil and Environmental Engineering
dc.identifier.oclc758168007en_US


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