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http://dx.doi.org/10.3744/SNAK.2021.58.3.175

Change of Ice Resistance of Ice-Breaking Tanker According to Frictional Coefficient  

Cho, Seong-Rak (Korea Research Institute of Ships & Ocean Engineering, KIOST)
Lee, Sungsu (School of Civil Engineering, Chungbuk National University)
Lee, Yong-Chul (Ship and Offshore Research Institute, Samsung Heavy Industries Co., Ltd.)
Yum, Jong-Gil (Korea Research Institute of Ships & Ocean Engineering, KIOST)
Jang, Jinho (Korea Research Institute of Ships & Ocean Engineering, KIOST)
Publication Information
Journal of the Society of Naval Architects of Korea / v.58, no.3, 2021 , pp. 175-181 More about this Journal
Abstract
This study describes the model tests in ice according to the frictional coefficient of an ice-breaking ship and the change in ice resistance by the analysis method for each component of ice resistances. The target vessel is a 90K DWT ice-breaking tanker capable of operating in ARC7 ice conditions in the Arctic Ocean, and twin POD propellers are fitted. The hull was specially painted with four different frictional coefficients on the same ship model. The total ice resistance can be separated by ice breaking, ice buoyancy, ice clearing resistances through the tests in level ice, pre-sawn ice and creep test in pre-sawn ice under sea ice thickness of 1.2 m and 1.7 m. Ice resistance was analyzed by correcting the thickness and bending strength of model ice by the ITTC correction method. As the frictional coefficient between the hull and ice increases, ice buoyancy and clearing resistances increase significantly. When the surface of the hull is rough, it is considered that the broken ice pieces do not slip easily to the side, resulting in an increase in ice buoyancy resistance. Also, the frictional coefficient was found to have a great influence on the ice clearing resistance as the ice thickness became thicker.
Keywords
Ice buoyancy resistance; Ice clearing resistance; Frictional coefficient; Surface roughness;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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