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Improving the Panel-Free Method for the Prediction of Ship Motions and Wave Induced Loads

[+] Author Affiliations
Wei Qiu, Heather Peng, Junshi Wang, Shahriar Nizam

Memorial University, St. John’s, NL, Canada

Paper No. OMAE2017-61137, pp. V07AT06A004; 8 pages
doi:10.1115/OMAE2017-61137
From:
  • ASME 2017 36th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 7A: Ocean Engineering
  • Trondheim, Norway, June 25–30, 2017
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-5773-1
  • Copyright © 2017 by ASME

abstract

Frequency-domain methods are proven efficient and reliable, especially for zero forward speed, in early design stage for the prediction of ship motions and wave-induced wave loads. There are still challenges for ships with forward-speed due to the inaccuracy in the computation of m-terms. In this paper, the panel-free method is further improved to predict motions and wave-induced loads on real ships with forward speeds. A simple algorithm has been developed to re-arrange the control points for Non-Uniform Rational B-Splines (NURBS) surfaces. This method led to reliable and accurate m-term computations and therefore improved ship motion and load predictions. Validation studies have been carried out for a hydroelastic model of a frigate. Computed motions and loads were compared with experimental data.

Copyright © 2017 by ASME
Topics: Stress , Waves , Ships

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