빙수조 모형시험법 개선 연구
A Study on Improvement of Ice Model Test Procedure
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초록
In this study, the target FSICR class is 1A whose target thickness of the brash ice is 46 mm in model scale. Normally ice floes for brash ice do not exceed 2 m in full scale, so the model ice sheet was cut by about 10 cm by 10 cm using hand saws. Since the target thickness of brash ice is 46 mm, 46 mm ice sheet makes one layer brash ice. For 23 mm thickness ice sheet, two layers should be accumulated to reach 46mm brash ice thickness. For 15mm thickness ice sheet, three layers need to be accumulated as the same as those in 23 mm ice sheet. New methodology to produce a brash ice was proposed. The results showed that it would be important to use multi-layer rather than single layer possibly because of significant thrust deduction from the propeller-ice interaction in the present ice condition (FSICR 1A).
Abstract
In this study, the target FSICR class is 1A whose target thickness of the brash ice is 46 mm in model scale. Normally ice floes for brash ice do not exceed 2 m in full scale, so the model ice sheet was cut by about 10 cm by 10 cm using hand saws. Since the target thickness of brash ice is 46 mm, 46 mm ice sheet makes one layer brash ice. For 23 mm thickness ice sheet, two layers should be accumulated to reach 46mm brash ice thickness. For 15mm thickness ice sheet, three layers need to be accumulated as the same as those in 23 mm ice sheet. New methodology to produce a brash ice was proposed. The results showed that it would be important to use multi-layer rather than single layer possibly because of significant thrust deduction from the propeller-ice interaction in the present ice condition (FSICR 1A).
참고문헌 (6)
- 최경식, "쇄빙선 및 쇄빙상선에 대한 빙저항 추정식과 실측자료의 비교 분석", 대한조선학회 논문집, 43(2), pp.147~155 (2006), 대한조선학회
- Finnish Maritime Administration, "Guidelines for the Application of the Finnish-Swedish Ice Class Rules" (2005), Finish Maritime
- ITTC, "The Specialist Committee on Ice: Final Report and Recommendations to the 22nd ITTC", Proc. of the 22nd International Towing Tank Conference (1999)
- Ice Tank Test Procedure at the Institute for Marine Dynamics, "Jones, S", Institute for Ocean Technology, National Research Council of Canada, ~, pp.Report No. LM-AVR-20 (1987)
- 김현수, "쇄빙 유조선과 일반 유조선의 저항특성 비교연구", 대한조선학회 논문집, 43(1), pp.759~765 (2006), 대한조선학회
- Spencer D, "Model-Scale", Full-Scale Correlation in Open Water and Ice for Canadian Coast Guard R-Class Icebreakers, 2001, pp.45(4), 249~261