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Ship resistance when operating in floating ice floes: A combined CFD&DEM approach

Huang, L; Tuhkuri, J; Igrec, B; Li, M; Stagonas, D; Toffoli, A; Cardiff, P; (2020) Ship resistance when operating in floating ice floes: A combined CFD&DEM approach. Marine Structures , 74 , Article 102817. 10.1016/j.marstruc.2020.102817. Green open access

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Abstract

Whilst climate change is transforming the Arctic into a navigable ocean where small ice floes are floating on the sea surface, the effect of such ice conditions on ship performance has yet to be understood. The present work combines a set of numerical methods to simulate the ship-wave-ice interaction in such ice conditions. Particularly, Computational Fluid Dynamics is applied to provide fluid solutions for the floes and it is incorporated with the Discrete Element Method to govern ice motions and account for ship-ice/ice-ice collisions, by which, the proposed approach innovatively includes ship-generated waves in the interaction. In addition, this work provides two algorithms that can implement computational models with natural ice-floe fields, which takes floe size distribution and randomness into consideration thus achieving high-fidelity modelling of the problem. Following validation against experiments, the model is shown accurate in predicting the ice-floe resistance of a ship, and then a series of simulations are performed to investigate how the resistance is influenced by ship speed, ice concentration, ice thickness and floe diameter. This paper presents a useful approach that can provide power estimates for Arctic shipping and has the potential to facilitate other polar engineering purposes.

Type: Article
Title: Ship resistance when operating in floating ice floes: A combined CFD&DEM approach
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.marstruc.2020.102817
Publisher version: https://doi.org/10.1016/j.marstruc.2020.102817
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Arctic shipping, Ice floe, Ship resistance, Computational fluid dynamics, Discrete element method
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10105955
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