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Numerical assessment of a double-acting offshore vessel's performance in level ice with experimental comparison

Abstract

In this paper a numerical model is used to investigate the level ice performance of a double-acting intervention vessel, and the results are compared with a limited set of experimental data. The icebreaking capability and maneuverability in level ice are analyzed by evaluating the behavior of the vessel when it is running both ahead and astern. The simulated icebreaking patterns, h–v curves, and turning circles in different modes of operation are discussed and compared partly with the corresponding ice model tests. The simulation results can supplement the experimental data by providing more information about the vessel's maneuverability in level ice and identifying the physical foundation for the exhibited performance of the vessel. The paper also presents the implementation of a random crack size model for more realistic icebreaking behavior, giving more consistent evaluation of the ship's performance in various ice conditions.

Category

Academic article

Client

  • Research Council of Norway (RCN) / 146025
  • Research Council of Norway (RCN) / 223254
  • Research Council of Norway (RCN) / 199567
  • Research Council of Norway (RCN) / 203471

Language

English

Author(s)

  • Biao Su
  • Roger Skjetne
  • Tor Einar Berg

Affiliation

  • Norwegian University of Science and Technology
  • SINTEF Ocean / Skip og havkonstruksjoner

Year

2014

Published in

Cold Regions Science and Technology

ISSN

0165-232X

Publisher

Elsevier

Volume

106-107

Page(s)

96 - 109

View this publication at Cristin