Sloshing motion of water in a moonpool
Madhani, Jehangir T. (1985) Sloshing motion of water in a moonpool. Masters by Research thesis, University of Strathclyde.
This thesis is concerned with the sloshing motion of water in a moonpool. It is a relatively new problem, that is particularly predominant in moonpools with relatively large
dimensions. The problem is further complicated by the additional behaviour of vertical oscillation. It is inevitable that large moonpools will be needed as offshore
technology advances, therefore making a problem an important
one. The research involves two parts, the theoretical and
experimental study. The theoretical study consists of idealising the moonpool to a two dimensional system, represented by two surface piercing parallel barriers at a distance 2a apart. The barriers are forced to undergo roll motion which in turn generates waves. These travelling waves are travelling in opposite directions to each other and have the same amplitude and period, and thus can be expressed in terms of a standing wave. This is mathematically achieved by applying the theory of wavemaking, and therefore the wave amplitude at the side wall can be evaluated at near resonant conditions. The experimental study comprises of comparing the results obtained from the tank and moonpool experiments. The rolling
motion creates the sloshing waves in both cases, in addition
the vertical oscillation in the moonpool is produced by
generating waves at one end of the towing tank. Apart from
highlighting influencing parameters, the resonant frequencies obtained from these experiments are then compared with the theoretical values. Experiments in demonstrating the effect of increasing damping with the aid of baffles are also conducted. This is an important aspect which is very necessary if operations in launching and retrieving are to be carried out efficiently and safely.
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|Item Type:||Thesis (Masters by Research)|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MARITIME ENGINEERING (091100) > Marine Engineering (091101)|
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MARITIME ENGINEERING (091100) > Ocean Engineering (091103)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MARITIME ENGINEERING (091100) > Ship and Platform Hydrodynamics (091104)
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Engineering Systems
|Institution:||University of Strathclyde|
|Copyright Owner:||Copyright 1985 Jehangir T. Madhani|
|Deposited On:||12 May 2011 08:51|
|Last Modified:||15 May 2011 00:31|
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