Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers
Model scale data from the National Research Council of Canada, Institute for Marine Dynamics for the Canadian Coast Guard's R-Class icebreaker are compared with previous model tests and, more importantly, with three sets of full-scale ice trials data colModel scale data from the National Resear...
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:8896045 2023-05-15T16:42:01+02:00 Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers Spencer, D. Jones, S. J. 2001 text https://nrc-publications.canada.ca/eng/view/ft/?id=0fe96263-ccea-4a63-868d-b8ff2135de56 https://nrc-publications.canada.ca/eng/view/object/?id=0fe96263-ccea-4a63-868d-b8ff2135de56 https://nrc-publications.canada.ca/fra/voir/objet/?id=0fe96263-ccea-4a63-868d-b8ff2135de56 unknown Journal of Ship Research, Volume: 45, Issue: 4, Publication date: 2001, Pages: 249–261 report_number:IR-2002-05 R-Class icebreaker article 2001 ftnrccanada 2021-09-01T06:34:21Z Model scale data from the National Research Council of Canada, Institute for Marine Dynamics for the Canadian Coast Guard's R-Class icebreaker are compared with previous model tests and, more importantly, with three sets of full-scale ice trials data colModel scale data from the National Research Council of Canada, Institute for Marine Dynamics for the Canadian Coast Guard's R-Class icebreaker are compared with previous model tests and, more importantly, with three sets of full-scale ice trials data collected in 1978,1979 and 1991. In open water, good agreement between model and full-scale was found for bollard tests, and for self propulsion tests provided a roughness allowance of 0.0008 was used. In ice, good correlation was found with the 1978 tests when the ship was new and there was little snow cover, using a model hull/ice friction coefficient of 0.05. Good agreement with the later tests, 1979 and 1991, was also obtained with somewhat higher model/ice friction coefficients of 0.055 and 0.065. This is attributed to a deteriorating, and hence rougher, full-scale ship hull surface. The model tests showed that a change in friction coefficient from 0.03 to 0.09 causes a doubling of the delivered power. For the full-scale ship, it is suggested that relatively inexpensive localised hull maintenance in the shoulder area, where ice jamming occurs and hence hull/ice friction is important, could improve performance and reduce the chance of structural damage. Peer reviewed: Yes NRC publication: Yes Article in Journal/Newspaper Icebreaker National Research Council Canada: NRC Publications Archive Canada |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
unknown |
topic |
R-Class icebreaker |
spellingShingle |
R-Class icebreaker Spencer, D. Jones, S. J. Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers |
topic_facet |
R-Class icebreaker |
description |
Model scale data from the National Research Council of Canada, Institute for Marine Dynamics for the Canadian Coast Guard's R-Class icebreaker are compared with previous model tests and, more importantly, with three sets of full-scale ice trials data colModel scale data from the National Research Council of Canada, Institute for Marine Dynamics for the Canadian Coast Guard's R-Class icebreaker are compared with previous model tests and, more importantly, with three sets of full-scale ice trials data collected in 1978,1979 and 1991. In open water, good agreement between model and full-scale was found for bollard tests, and for self propulsion tests provided a roughness allowance of 0.0008 was used. In ice, good correlation was found with the 1978 tests when the ship was new and there was little snow cover, using a model hull/ice friction coefficient of 0.05. Good agreement with the later tests, 1979 and 1991, was also obtained with somewhat higher model/ice friction coefficients of 0.055 and 0.065. This is attributed to a deteriorating, and hence rougher, full-scale ship hull surface. The model tests showed that a change in friction coefficient from 0.03 to 0.09 causes a doubling of the delivered power. For the full-scale ship, it is suggested that relatively inexpensive localised hull maintenance in the shoulder area, where ice jamming occurs and hence hull/ice friction is important, could improve performance and reduce the chance of structural damage. Peer reviewed: Yes NRC publication: Yes |
format |
Article in Journal/Newspaper |
author |
Spencer, D. Jones, S. J. |
author_facet |
Spencer, D. Jones, S. J. |
author_sort |
Spencer, D. |
title |
Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers |
title_short |
Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers |
title_full |
Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers |
title_fullStr |
Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers |
title_full_unstemmed |
Model-scale/full-scale correlation in open water and ice for Canadian Coast Guard "R-Class" icebreakers |
title_sort |
model-scale/full-scale correlation in open water and ice for canadian coast guard "r-class" icebreakers |
publishDate |
2001 |
url |
https://nrc-publications.canada.ca/eng/view/ft/?id=0fe96263-ccea-4a63-868d-b8ff2135de56 https://nrc-publications.canada.ca/eng/view/object/?id=0fe96263-ccea-4a63-868d-b8ff2135de56 https://nrc-publications.canada.ca/fra/voir/objet/?id=0fe96263-ccea-4a63-868d-b8ff2135de56 |
geographic |
Canada |
geographic_facet |
Canada |
genre |
Icebreaker |
genre_facet |
Icebreaker |
op_relation |
Journal of Ship Research, Volume: 45, Issue: 4, Publication date: 2001, Pages: 249–261 report_number:IR-2002-05 |
_version_ |
1766032481331445760 |