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Comparative Frequency Domain Seakeeping Analysis of a Fast Monohull in Regular Head Waves

[+] Author Affiliations
Thomas E. Schellin, Christian Beiersdorf

Germanischer Lloyd, Hamburg, Germany

Xiao-Bo Chen

Bureau Veritas, Courbevoie, France

Adolfo Maron

Canal de Experiencias Hidrodinamicas de El Pardo, El Pardo, Spain

Paper No. OMAE2002-28502, pp. 753-760; 8 pages
doi:10.1115/OMAE2002-28502
From:
  • ASME 2002 21st International Conference on Offshore Mechanics and Arctic Engineering
  • 21st International Conference on Offshore Mechanics and Arctic Engineering, Volume 1
  • Oslo, Norway, June 23–28, 2002
  • Conference Sponsors: Ocean, Offshore, and Arctic Engineering Division
  • ISBN: 0-7918-3611-8 | eISBN: 0-7918-3599-5
  • Copyright © 2002 by ASME

abstract

Two sets of seakeeping computations and comparative model teats were performed for a fast monohull in regular waves. The first set of computations used an existing three-dimensional frequency domain panel code that formulates the potential flow problem by means of the zero-speed Green function. The second set used a modified version of this code that implemented an advanced software module, newly developed within the European research project WAVELOADS, where the free-surface forward-speed Green function method based on the Fourier-Kochin formulation accounts for forward speed effects. Although this formulation provided a solid mathematical basis for obtaining robust and accurate numerical predictions, numerical inaccuracies prevented obtaining satisfactory results. For nearly all cases investigated, predictions from the original (zero-speed Green function) code correlated more favorably with test data than those from the modified (forward-speed Green function) code. For the fast monohull investigated here, practically relevant global load predictions based on the zero-speed Green function correlated favorably with measurements.

Copyright © 2002 by ASME
Topics: Waves

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