Prediction of the forces acting on container carriers in muddy navigation areas using a fluidization parameter |
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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 safety of navigation in muddy areas, a comprehensive captive manoeuvring model test program was executed. Based
on the results of this experimental program, a four-quadrant manoeuvring model was built with a separate set of coefficients
for each combination of under-keel clearance and mud layer characteristics. The disadvantage of this model is that only conditions
corresponding with the experimental ones can be simulated. A more consolidated mathematical model was needed. This was achieved
with the introduction of a fluidization parameter that 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 hull forces,
the propeller thrust and torque, and the forces acting on the rudder will be discussed. |
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Keywords: | Nautical bottom Mud Manoeuvring Container Fluidization Captive model testing |
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