Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations
A recently developed FE (Finite Element) model for ship performance in ice is presented in this paper. Hydrodynamic loads and ship-ice interaction loads are numerically calculated based on the Fluid Structure Interaction (FSI) method by using commercial FE package LS-DYNA (www.lstc.com). Actual test...
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ftnrccanada:oai:cisti-icist.nrc-cnrc.ca:cistinparc:17210723 2023-05-15T16:42:01+02:00 Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations Wang, J. Derradji-Aouat, A. 2010-11-29 text https://doi.org/10.4224/17210723 https://nrc-publications.canada.ca/eng/view/ft/?id=6ffa0b09-e387-444c-b118-594a9f54695b https://nrc-publications.canada.ca/eng/view/object/?id=6ffa0b09-e387-444c-b118-594a9f54695b https://nrc-publications.canada.ca/fra/voir/objet/?id=6ffa0b09-e387-444c-b118-594a9f54695b eng eng Technical Report; no. TR-2010-24, Publication date: 2010-11-29 doi:10.4224/17210723 open access ship in ice numerical calculation LS-DYNA technical report 2010 ftnrccanada https://doi.org/10.4224/17210723 2021-09-01T06:30:57Z A recently developed FE (Finite Element) model for ship performance in ice is presented in this paper. Hydrodynamic loads and ship-ice interaction loads are numerically calculated based on the Fluid Structure Interaction (FSI) method by using commercial FE package LS-DYNA (www.lstc.com). Actual test results from laboratory physical model scale experiments are used to validate and benchmark the numerical simulations. One of the NRC-IOT’s standard icebreaker models (a model for the Canadian icebreaker Terry Fox) is used in the numerical simulations in two different concentrations (80% and 60%) of pack ice conditions. In this paper, only broken ice conditions are numerically simulated, and therefore ice material failure was not considered. All ice properties such as density and Young’s modulus used are the same as those measured in the NRC-IOT ice tank. The numerical challenge is to evaluate hydrodynamic loads on the ship hull. This is due to the fact that LS-DYNA is an explicit FE solver and FSI value is calculated by using a penalty method. For this purpose, a 2-D wavemaker was simulated and compared with experiments. Although the hydrodynamic loads directly acting on the ship are small compared to the ice loads, the interaction between water and ice could be important for simulating pack ice conditions or ice floe management. Comparisons between numerical and experimental results are shown and main conclusions are pointed out. Peer reviewed: No NRC publication: Yes Report Icebreaker National Research Council Canada: NRC Publications Archive |
institution |
Open Polar |
collection |
National Research Council Canada: NRC Publications Archive |
op_collection_id |
ftnrccanada |
language |
English |
topic |
ship in ice numerical calculation LS-DYNA |
spellingShingle |
ship in ice numerical calculation LS-DYNA Wang, J. Derradji-Aouat, A. Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations |
topic_facet |
ship in ice numerical calculation LS-DYNA |
description |
A recently developed FE (Finite Element) model for ship performance in ice is presented in this paper. Hydrodynamic loads and ship-ice interaction loads are numerically calculated based on the Fluid Structure Interaction (FSI) method by using commercial FE package LS-DYNA (www.lstc.com). Actual test results from laboratory physical model scale experiments are used to validate and benchmark the numerical simulations. One of the NRC-IOT’s standard icebreaker models (a model for the Canadian icebreaker Terry Fox) is used in the numerical simulations in two different concentrations (80% and 60%) of pack ice conditions. In this paper, only broken ice conditions are numerically simulated, and therefore ice material failure was not considered. All ice properties such as density and Young’s modulus used are the same as those measured in the NRC-IOT ice tank. The numerical challenge is to evaluate hydrodynamic loads on the ship hull. This is due to the fact that LS-DYNA is an explicit FE solver and FSI value is calculated by using a penalty method. For this purpose, a 2-D wavemaker was simulated and compared with experiments. Although the hydrodynamic loads directly acting on the ship are small compared to the ice loads, the interaction between water and ice could be important for simulating pack ice conditions or ice floe management. Comparisons between numerical and experimental results are shown and main conclusions are pointed out. Peer reviewed: No NRC publication: Yes |
format |
Report |
author |
Wang, J. Derradji-Aouat, A. |
author_facet |
Wang, J. Derradji-Aouat, A. |
author_sort |
Wang, J. |
title |
Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations |
title_short |
Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations |
title_full |
Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations |
title_fullStr |
Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations |
title_full_unstemmed |
Ship Performance in Broken Ice Floes - Preliminary Numerical Simulations |
title_sort |
ship performance in broken ice floes - preliminary numerical simulations |
publishDate |
2010 |
url |
https://doi.org/10.4224/17210723 https://nrc-publications.canada.ca/eng/view/ft/?id=6ffa0b09-e387-444c-b118-594a9f54695b https://nrc-publications.canada.ca/eng/view/object/?id=6ffa0b09-e387-444c-b118-594a9f54695b https://nrc-publications.canada.ca/fra/voir/objet/?id=6ffa0b09-e387-444c-b118-594a9f54695b |
genre |
Icebreaker |
genre_facet |
Icebreaker |
op_relation |
Technical Report; no. TR-2010-24, Publication date: 2010-11-29 doi:10.4224/17210723 |
op_rights |
open access |
op_doi |
https://doi.org/10.4224/17210723 |
_version_ |
1766032479993462784 |