Non-smooth discrete element method analysis of channel width's effect on ice resistance in broken ice field

A numerical model based on NDEM is used to investigate the effect of channel width on broken-ice resistance in the channel. The model incorporates a limited impulse method to simulate the ice crushing failure. The accuracy of the numerical model is benchmarked against experimental data from model tests conducted on the Araon icebreaker at KRISO. The simulations successfully capture the characteristic effects of channel width on broken-ice resistance observed in the experiment. Beyond benchmarking of the numerical model, this study analyses the force chain characteristics in the broken ice field, revealing the crucial role of force chains in the resistance increase caused by channel width constraints. Building upon the established numerical model, further sensitivity analyses are conducted to investigate the correlation between channel width effect and other relevant factors such as ice concentration, ship velocity and ice thickness. Among these factors, it is found that ice concentration emerges as the predominant determinant of the critical channel width. The increase in ice resistance attributable to the channel width is exacerbated under the condition of thicker ice floes and lower ship velocity, where the occurrence of ice floe rotation is less frequent and the corresponding force chains are stronger and more stable.

• Record URL:
  • https://doi.org/10.1016/j.oceaneng.2024.119419
• Record URL:
  • http://www.sciencedirect.com/science/article/pii/S0029801824027574
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00298018
• Supplemental Notes:
  • © 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies. Abstract reprinted with permission of Elsevier.
• Authors:
  • Yang, Biye
  • Sun, Zhe
  • Zhang, Guiyong
  • 0000-0002-6569-6286
  • Yang, Borui
  • Lubbad, Raed
• Publication Date: 2024-12-1

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: 119419
• Serial:
  • Ocean Engineering
  • Volume: 313
  • Issue Number: 0
  • Publisher: Pergamon
  • ISSN: 0029-8018
  • EISSN: 1873-5258
  • Serial URL: http://www.sciencedirect.com/science/journal/00298018

Subject/Index Terms

• TRT Terms: Channels (Waterways); Discrete element method; Ice floes; Width
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 01934322
• Record Type: Publication
• Files: TRIS
• Created Date: Oct 18 2024 1:42PM