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Application of potential flow methods to ship squat in different canal widths
Gourlay, T.P.; Lataire, E.; Delefortrie, G. (2016). Application of potential flow methods to ship squat in different canal widths, in: Uliczka, K. et al. (Ed.) Proceedings of the 4th International Conference on Ship Manoeuvring in Shallow and Confined Water with Special Focus on Ship Bottom Interaction, Hamburg, Germany, 23 to 25 May 2016 (4th MASHCON). pp. 146-155
In: Uliczka, K. et al. (Ed.) (2016). Proceedings of the 4th International Conference on Ship Manoeuvring in Shallow and Confined Water with Special Focus on Ship Bottom Interaction, Hamburg, Germany, 23 to 25 May 2016 (4th MASHCON). Bundesanstalt für Wasserbau: Karlsruhe. ISBN 978-3-939230-38-0. XVIII, 314 pp., meer

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Documenttype: Congresbijdrage

Auteurs  Top 
  • Gourlay, T.P.
  • Lataire, E., meer
  • Delefortrie, G., meer

Abstract
    This paper presents a comparison of numerical methods with model test results for squat (sinkage and trim) of a 1:75 KVLCC2 model in the Flanders Hydraulics Research towing tank, at a range of rectangular canal widths and depths. The numerical methods are the Linear-2D and Nonlinear-1D methods in ShallowFlow, the Double-Body method in HullWave and the Rankine-Source method in GL Rankine. Analysis of the model tests showed that in the narrowest canals, mass flux past the ship was not conserved, nevertheless it appears that the Nonlinear-1D method may give good results for the narrowest canals. The Linear-2D method was found to give good results in the widest canal, particularly at the shallowest water depth. The Rankine-Source method was found to give good results for the widest canal, particularly at high speed. The Double-Body method was found to give quite consistently good results across all conditions.

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