빙마찰계수에 따른 쇄빙탱커의 빙저항 변화
Change of Ice Resistance of Ice-Breaking Tanker According to Frictional Coefficient
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참고문헌
키워드
초록
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.
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.
참고문헌 (15)
- ABS, "Rules for building and classing: Steel vessels for service on rivers and intracoastal waterways 2007" (2007)
- 조성락, "빙-선체 마찰계수 측정 기법", 대한조선학회 논문집, 48(4), pp.363~367 (2011), 대한조선학회
- 정재환, "프로펠러 회전류에서 작동하는 방향타의받음각 특성 연구", 대한조선학회 논문집, 50(6), pp.421~428 (2013), 대한조선학회
- Cho, S, "Paint for the Control of Frictional Coefficient for Model Ship. Rep. of Korea Patent 10-1240777", ~
- 조성락, "A prediction method of ice breaking resistance using a multiple regression analysis", International Journal of Naval Architecture and Ocean Engineering, 7(4), pp.708~719 (2015), 대한조선학회
- Daidola, J. C, "A procedure for the structural design of icebreakers and other ships navigating in ice", SNAME 1988 Transaction, 96, pp.271~308 (1989)
- ITTC, "The Performance in Ice-Covered Waters Committee of 21st ITTC"
- Final report and recommendations to the 23rd ITTC, "ITTC", ~ (2002)
- Jones, S.J, "Resistance and propulsion model tests of the USCGC healy (model 546) in ice" (2005)
- Kashteljan, V, "Ice resistance to motion of a ship" (1968), Sudostroyeniye
- full–scale correlation of OCRE’s model test results in supporting the CCGS polaricebreaker model test data evaluation, "Model-scale", pp.2012, Lau, M
- Mäkinen, E, "Search for Low Friction Surfaces" (1975), The Society of Naval Architects and Marine Engineers(Icetech 75)
- Mäkinen, E, "Friction and hull coatings in ice operations" (1994), The Society of Naval Architects and Marine Engineers(Icetech 94)
- Northern sea route reconnaissance study, "Sodhi, D", CRREL, ~, pp.Report 95-17 (1995)
- Vance, G, "A scaling system for ships modelled in ice" (1975), The Society of Naval Architects and Marine Engineers(Icetech 75)