Discrete element simulation of the resistance of a ship in unconsolidated ridges

Resistance on a ship penetrating a sea ice ridge is a key design parameter of ice breaking ships. The resistance of a ship in an unconsolidated ridge has been studied by using a three dimensional discrete element method. Ridges of equal depth but different widths were used and it was observed that t...

Full description

Saved in:
Bibliographic Details
Published in:Cold regions science and technology 2019-11, Vol.167, p.102855, Article 102855
Main Authors: Gong, Hanyang, Polojärvi, Arttu, Tuhkuri, Jukka
Format: Article
Language:English
Subjects:
Discrete element method
Ice ridge
Ridge resistance
Sea ice
Ship
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Resistance on a ship penetrating a sea ice ridge is a key design parameter of ice breaking ships. The resistance of a ship in an unconsolidated ridge has been studied by using a three dimensional discrete element method. Ridges of equal depth but different widths were used and it was observed that the ridge width has a major effect on the ridge resistance: the ridge resistance increases with increasing ridge width, until the ridge width is of the same order as the ship length. The ridge resistance was decomposed into a frictional force and a deformation force. The deformation force is due to the ridge deformation by the ship bow and it was shown that the deformation force is related with the mass of ice blocks accelerated by and moving with the ship. •3D discrete element simulations of a ship passage through unconsolidated ridges of equal thickness but different widths.•The ridge width has a major effect on the ridge resistance.•Force due to ridge deformation is related with the mass of ice blocks accelerated by and moving with the ship.
ISSN:0165-232X
1872-7441
DOI:10.1016/j.coldregions.2019.102855