TY - JOUR
T1 - Ship resistance when operating in floating ice floes
T2 - A combined CFD&DEM approach
AU - Huang, Luofeng
AU - Tuhkuri, Jukka
AU - Igrec, Bojan
AU - Li, Minghao
AU - Stagonas, Dimitris
AU - Toffoli, Alessandro
AU - Cardiff, Philip
AU - Thomas, Giles
N1 - | openaire: EC/H2020/723526/EU//SEDNA
PY - 2020/11
Y1 - 2020/11
N2 - 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.
AB - 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.
KW - Arctic shipping
KW - Computational fluid dynamics
KW - Discrete element method
KW - Ice floe
KW - Ship resistance
UR - http://www.scopus.com/inward/record.url?scp=85088922568&partnerID=8YFLogxK
U2 - 10.1016/j.marstruc.2020.102817
DO - 10.1016/j.marstruc.2020.102817
M3 - Article
AN - SCOPUS:85088922568
SN - 0951-8339
VL - 74
JO - Marine Structures
JF - Marine Structures
M1 - 102817
ER -
