합성얼음과 냉동얼음을 사용한 쇄빙선의 저항 자항시험 비교연구 = Comparative Study on Resistance and self-propulsion of Icebreaker with Synthetic ice and Refrigerated ice

다국어 초록 (Multilingual Abstract)

This paper deals with the model tests with synthetic(model) ice in normal towing tank instead of refrigerated ice for the model tests of resistance and self-propulsion in pack ice condition. The main purpose of this research is to find the correlation between with synthetic ice and with refrigerated ice and also to find the possibility of ice model tests in normal towing tank. The tests of resistance and self-propulsion have been conducted with synthetic in normal towing tank and refrigerated ice in ice tank, respectively and the results are compared with each other. The present comparisons shows the difference between them because of the difference of bending stress of each model ice. The present study is expected to be carried out with more variation of synthetic ice properties such as bending moment, viscous coefficients to have much closer correlation with refrigerated ice results. In the case of resistance, the density variation for the correlation between the two ices is mainly focused on the present study. According to the increase of density, the correlation becomes better and other parametric studies such as ice size, friction coefficient, bending moment, etc.

목차 (Table of Contents)

• 목차 i
• 표 목차 ii
• 그림 목차 iii
• Nomenclature iv
• 1. 서 론 1
• 1-1 연구배경 1
• 1-2 연구목적 2
• 1-3 연구내용 3
• 2. 실험 장비 5
• 2-1 빙 수조설비 5
• 2-2 예인 수조설비 6
• 2-3 모형선 6
• 3. ICE 8
• 3-1 냉동얼음(Refrigerated ice) 8
• 3-2 합성얼음(Synthetic ice) 8
• 3-3 합성얼음의 밀도 변화 9
• 3-4 Ice class rule 10
• 4. 쇄빙선의 저항시험 12
• 4-1 저항시험 방법 12
• 4-2 밀도 차에 의한 저항시험 13
• 5. 쇄빙선의 자항시험 15
• 6. 쇄빙선의 저항과 자항 해석법 18
• 6-1 쇄빙선의 저항 해석법 18
• 6-2 쇄빙선의 자항 해석법 22
• 7. 결 과 24
• 7-1 밀도변화에 따른 저항시험 결과 24
• 7-2 냉동얼음과 합성얼음의 자항결과 비교 25
• 8. 결 론 28
• 참 고 문 헌 30
• Abstract 64