Modelling propeller and rudder induced forces acting on deep drafted vessels in muddy navigation areas |
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Authors: | Guillaume Delefortrie Marc Vantorre |
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Institution: | (1) Flanders Hydraulics Research, Berchemlei 115, 2140 Antwerp, Belgium;(2) Maritime Technology Division, Ghent University, Technologiepark 904, 9052 Ghent, Belgium |
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Abstract: | To assess the navigability of deep drafted vessels in muddy navigation areas a mathematical model has been built that takes
into account the characteristics of the mud layer. This was achieved with the introduction of a fluidization parameter which
determines the corresponding hydrodynamically equivalent depth above a solid bottom. As a result, the under keel clearance
dependency of a given mathematical manoeuvring model can be reformulated in such way that the effect of any realistic muddy
condition is included. In this article the modelling of the propeller and rudder induced forces and the implementation possibilities
of the model will be discussed. It is concluded that the mathematical model, initially formulated for a 6,000 TEU container
carrier, provides reliable predictions of the behaviour of larger container carriers and even fuller deep drafted ships. |
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Keywords: | Nautical bottom Mud Manoeuvring Fluidization Captive model testing Container |
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