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contributor authorR. Eatock Taylor
contributor authorS. M. Hung
date accessioned2017-05-08T23:25:22Z
date available2017-05-08T23:25:22Z
date copyrightNovember, 1987
date issued1987
identifier issn0892-7219
identifier otherJMOEEX-28045#327_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/102803
description abstractHydrodynamic interactions between the component bodies of a multi-body offshore system can cause substantial enhancement of certain load effects, such as mean horizontal drift forces and radiation damping. It is found, for example, that for a group of N similar members these forces can be of the order of N2 times the force on one member in isolation, over a range of low frequencies; and at higher frequencies interaction effects continue to have important consequences on design parameters. This paper discusses some theoretical background which sheds light on this phenomenon, and presents numerical results for semisubmersible, TLP and other configurations which provide further insight. The numerical evaluation of wave flow past these complex multibody systems is performed using a coupled finite element/boundary element model, together with the near field (direct integration) calculation of drift forces. Results are compared with an existing approximate method, and with idealizations based on the columns alone, with a view to the development of simple procedures for hydrodynamic synthesis.
publisherThe American Society of Mechanical Engineers (ASME)
titleWave Drift Enhancement Effects for Semisubmersible and TLP Systems
typeJournal Paper
journal volume109
journal issue4
journal titleJournal of Offshore Mechanics and Arctic Engineering
identifier doi10.1115/1.3257028
journal fristpage327
journal lastpage334
identifier eissn1528-896X
treeJournal of Offshore Mechanics and Arctic Engineering:;1987:;volume( 109 ):;issue: 004
contenttypeFulltext


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