표제지
요약
목차
1. 서론 11
1.1. 연구 배경 11
1.2. 선행 연구 14
1.2.1. 소형 선박의 저항 성능 14
1.2.2. 소형 선박의 추진 성능 16
1.3. 연구 목적 17
2. 수치해석 기법 및 이론 18
2.1. 지배방정식 18
2.2. 격자계 구성 19
2.3. Propeller open water test 20
2.4. 정수 중 저항 해석 21
2.5. 정수 중 자항 해석 23
3. 모형시험(저항시험)을 통한 검증 27
3.1. 대상 선형 27
3.2. 실험 시설 29
3.3. 수치해석 30
3.3.1. 저항시험 결과 30
3.3.2. 수치해석 결과 비교 32
4. 수치해석을 통한 성능 평가 35
4.1. 대상선형 35
4.2. 대상 프로펠러 37
4.3. 수치해석 39
4.3.1. Propeller open water test 결과 39
4.3.2. 정수 중 저항 성능 검증 41
4.3.3. 정수 중 자항 성능 검증 42
4.4. 대상선박 수치해석 결과 43
5. Propeller 설계 변경 (Potential 해석 기반) 56
5.1. CFD - Potential 해석 결과의 비교 56
5.2. Propeller 설계 변경 과정 58
5.3. 설계 변경된 프로펠러의 성능해석 결과 59
6. 결론 61
7. 참고문헌 63
Table 1. Main Particulars 27
Table 2. Particulars of propeller 37
Table 3. Target case 41
Table 4. RTM results in target case 41
Table 5. Comparison of self-propulsion factors in case1 43
Table 6. Comparison of self-propulsion factors in case2 44
Table 7. Comparison of self-propulsion factors in case3 45
Table 8. Comparison of self-propulsion factors in case4 46
Table 9. Comparison of self-propulsion factors in case5 47
Table 10. Particulars of propeller 58
Table 11. Particulars of propeller 58
Table 12. Comparison of self-propulsion factors in case4 59
Table 13. Comparison of self-propulsion factors in New propeller case 60
Figure 1. 최근 5년 간 해양사고 사례 원인 분석 12
Figure 2. Boundary of Resistance in calm water 19
Figure 3. KP 505 POW graph 20
Figure 4. Components of hull resistance 21
Figure 5. Coefficient pressure of G/T 4.99ton fishing vessel (a) front view, (b) oblique view 22
Figure 6. 회전수, 프로펠러 추력 및 토크 계산 그래프 (대상선 10knots 기준) 24
Figure 7. Thrust identity method and Torque identity method 25
Figure 8. Geometry of G/T 4.99ton fishing vessel (a) front view, (b) back view, (c) side view, (d) oblique view 28
Figure 9. Plans of Inha university towing tank 29
Figure 10. Resistance experiments in (Left) w/o transom device and (Right) w/ transom device 30
Figure 11. Comparison in experiment (a) CTM, (b) Trim, (c) Sinkage[이미지참조] 31
Figure 12. Wave distribution in experiment (a) w/o transom device, (c) w/ transom device, in CFD (b) w/o transom device, (d) w/ transom device 32
Figure 13. Comparison in experiment and CFD (a) CTM, (b) Trim, (c) Sinkage[이미지참조] 33
Figure 14. 4.99ton fishing vessel (w/ appendage and propeller) mesh distribution 35
Figure 15. Comparison of Hull type, (a) Bare hull (b) w/ appendage, (c) w/ appendage and propeller 36
Figure 16. Propeller geometry 37
Figure 17. POW Mesh distribution (a) Side view (b) Front view 39
Figure 18. Comparison of POW characteristics 40
Figure 19. POW results 40
Figure 20. Pressure distribution in self-propulsion test 42
Figure 21. Comparison of thrust deduction factor 48
Figure 22. Wake fraction distribution (a) w/ appendage (b) w/ appendage and propeller 48
Figure 23. Comparison of wake fraction (model) 49
Figure 24. Comparison of wake fraction (ship) 50
Figure 25. Wake fraction distribution (a) Barehull (b) W/ appendage 50
Figure 26. ITTC Guideline 51
Figure 27. Comparison of eta H 52
Figure 28. Comparison of eta R 52
Figure 29. Comparison of eta O 53
Figure 30. Comparison of eta D 54
Figure 31. Comparison of EHP 54
Figure 32. Comparison of DHP 55
Figure 33. POW graph (New propeller) 56
Figure 34. POW results (New propeller) 57