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Hydrodynamic Performance Evaluation of an Ice Class Podded Propeller Under Ice Interaction

[+] Author Affiliations
Pengfei Liu, Ayhan Akinturk

National Research Council Canada, St. John’s, NL, Canada

Moqin He, Mohammed Fakhrul Islam, Brian Veitch

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

Paper No. OMAE2007-29508, pp. 669-676; 8 pages
doi:10.1115/OMAE2007-29508
From:
  • ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering
  • Volume 4: Materials Technology; Ocean Engineering
  • San Diego, California, USA, June 10–15, 2007
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 0-7918-4270-3 | eISBN: 0-7918-3799-8
  • Copyright © 2007 by ASME and National Research Council of Canada

abstract

Fluid-structure interaction between an ice sheet on the water surface and a podded R-Class propeller was examined and analyzed in terms of numerical simulation using a newly enhanced unsteady time-domain, multiple body panel method model. The numerical model was validated and verified and also checked against various previous in-house experimental measurements. The simulation was performed in a real unsteady case, that is, the ice piece stands still and the podded propeller moves and approaches the ice piece until collision occurs. Experimental data were taken from a previous cavitation tunnel test program for a bare R-Class ice breaker propeller under open water conditions, for the R-Class propeller approaching a blade-leading-edge contoured large size ice block under the proximity condition, and from an ice tank test program for a tractor type podded/strutted R-Class propeller under open water conditions. Comparison between experimental and numerical results was made. A general agreement was obtained. The magnitude of force fluctuations during the interaction increased significantly at the instant immediately before the impact between the propeller blades and the ice piece.

Copyright © 2007 by ASME and National Research Council of Canada

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