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Modelling the Interaction between Ice and Ships

  • Roderick Y. EdwardsJr.
Part of the International Union of Theoretical and Applied Mechanics book series (IUTAM)

Abstract

Physical modelling of the steady motion of a ship through level, unbroken ice has developed to the point where experiments can be carried out routinely. Nonetheless, there are in the literature very few illustrations of the degree to which estimates of performance derived from model tests in simulated ice correlate with full scale performance for the corresponding prototype.

This paper presents results of extensive level ice resistance model experiments at 1/48th and 1/36th scale for CCGS LOUIS S. ST. LAURENT in conjunction with full scale transitting performance of that ship in Goose Bay. Model test results at 1/36th scale for CCGS NORMAN McLEOD ROGERS are presented and compared with limited full scale data in the St. Lawrence River. Model test results for USCGC MACKINAW are presented with corresponding full scale results.

In the cases presented, model/full scale correlation is very good despite difficulties in correctly scaling down troublesome ice properties. Continued acquisition of full scale data and research into improving model ice properties is urged.

Keywords

Compressive Strength Full Scale Friction Factor Unconfined Compressive Strength Ship Speed 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. [1]
    Edwards, R.Y.Jr. et al, “Full Scale and Model Tests of a Great Lakes Icebreaker”, Transaction of the Society of Naval Architects and Marine Engineers, Volume 80, 1972.Google Scholar
  2. [2]
    Edwards, R.Y.Jr. et al, “Influence of Major Characteristics of Icebreaker Hulls on Their Powering Requirements and Maneuverability in Ice”.Google Scholar
  3. [3]
    Bradford, J.D., “Icebreaker Probes to Lake Melville, Labrador in 1972”, Manuscript Report Series No. 54, 1979, Marine Sciences Directorate, Dept. of Fisheries & Oceans, Ottawa.Google Scholar
  4. [4]
    Edwards, R.Y. Jr., German, J. Gordon, and Lawrence, R.G.A., “Comparative Model Test of the Performance of Two Canadian Coast Guard Icebreakers”, Second Int’l. Conf. on Port & Ocean Engineering Under Arctic Conditions, Iceland, 1973.Google Scholar
  5. [5]
    Enkvist, E., “On Ice Resistance Encountered by Ships in the Continuous Mode of Icebreaking”, The Swedish Academy of Engineering Sciences in Finland, Report No. 24, 1972.Google Scholar
  6. [6]
    Weeks, W.R. and Assur, A., “Mechanical Properties of Sea Ice”, U.S.A. CRREL, September 1967.Google Scholar
  7. [7]
    Dykins, J.E., “Elastic Behavior of Saline Ice”, Naval Civil Engineering Laboratory, 1967.Google Scholar
  8. [8]
    Keinonen, Arno, “An Analytical Method for Calculating the Pure Ridge Resistance Encountered by Ships in First Year Ice Ridges”, Helsinki U. of Tech., Ship Hydrodynamics Lab., Finland, Report, No. 17, 1979.Google Scholar
  9. [9]
    Edwards, R.Y. and Kotras, T., “Results of Model Ice Properties Research”, 12 July 1972, ARCTEC Report 0057.Google Scholar
  10. [10]
    Makinen, F. Ero, Lahti, Antti and Rimppi, Martin, “Influence of Friction on Resistance, Search for Low Friction Surfaces”, Ice Tech 75, Symposium on Icebreaking Technologies, April 1975.Google Scholar
  11. [11]
    Lewis, J.W. and Benze, D.L., “Technical Progress Report of Model Ice Resistance Tests of USCGC MACKINAW”, ARCTEC Report 00771–3, 1971Google Scholar
  12. [12]
    Lecourt, E.J., Major, R.A., Thomas, H.L., Nargle, J.N., “Recent United States Coast Guard Efforts to Improve Icebreaking Efficiency” SNAME STAR Symposium, April 1978.Google Scholar
  13. [13]
    Lewis, J.W. and Edwards, R.Y.Jr., “Methods for Predicting the Resistance of Icebreakers and Icebreaking Ships”, Transactions Society of Naval Architects, Volume 78, 1970.Google Scholar

Copyright information

© Springer-Verlag, Berlin, Heidelberg 1980

Authors and Affiliations

  • Roderick Y. EdwardsJr.
    • 1
  1. 1.Arctec Canada LimitedOttawaCanada

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