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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2011.6
- 수록면
- 222 - 232 (11page)
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This article examines the scale effect of the flow characteristics, resistance and propulsion performance on a 317k VLCC. The turbulent flows around a ship in both towing and self-propulsion conditions are analyzed by solving the Reynolds-averaged Navier-Stokes equation together with the application of Reynolds stress turbulence model. The computations are carried out in both model-and full-scale. A double-body model is applied for the treatment of free surface. An asymmetric body-force propeller is used. The speed performances including resistance and propulsion factors are obtained from two kinds of methods. One is to analyze the computational results in model scale through the revised ITTC’78 method. The other is directly to analyze the computational results in full scale. Based on the computational predictions, scale effects of the resistance and the self-propulsion factors including form factor, thrust deduction fraction, effective wake fraction and various efficiencies are investigated. Scale effects of the streamline pattern, hull pressure and local flow characteristics including x-constant sections, propeller and center plane, and transom region are also investigated. This study presents a useful tool to hull-form and propeller designers, and towing-tank experimenters to take the scale effect into consideration.
목차
Abstract
1. 서론
2. 수치해석 방법
3. 대상선, 계산조건 및 격자생성
4. 저항, 자항요소 및 속도성능 추정방법
5. 결과 및 토의
6. 결론
참고문헌
참고문헌 (18)
참고문헌 신청
1. [학술대회논문] - Choi, J.E / 2003 / Study on the Scale Effects on the Flow Characteristics around a Full Slow-Speed Ship / Proceedings of the 8th Numerical Ship Hydrodynamics
2. [학술지(정기간행물)] - Choi, J.E / 2009 / Computational predictions of ship-speed performance / Journal of Maritime Science and Technology 14 (3) : 322 ~ 333
3. [학술지(정기간행물)] - Choi, J.K / 2003 / Prediction of Unsteady Effective Wake by a Euler Solver/Vortex-Lattice Coupled Method / Journal of Ship Research 47 : 131 ~ 144
4. [학술지(정기간행물)] - Dyne, G. / 1974 / A Study of Scale Effect on Wake, Propeller Cavitation, and Vibratory Pressure at Hull of Two Tanker Models / SNAME 82 : 162 ~ 179
5. [학술대회논문] - Eca, I / 2001 / Numerical Prediction of Scale Effect in Ship Stern Flows with Eddy-Vicosity Turbulence Models / Proceedings of the 23rd Symposium on Naval Hydrodynamics
2. [학술지(정기간행물)] - Choi, J.E / 2009 / Computational predictions of ship-speed performance / Journal of Maritime Science and Technology 14 (3) : 322 ~ 333
3. [학술지(정기간행물)] - Choi, J.K / 2003 / Prediction of Unsteady Effective Wake by a Euler Solver/Vortex-Lattice Coupled Method / Journal of Ship Research 47 : 131 ~ 144
4. [학술지(정기간행물)] - Dyne, G. / 1974 / A Study of Scale Effect on Wake, Propeller Cavitation, and Vibratory Pressure at Hull of Two Tanker Models / SNAME 82 : 162 ~ 179
5. [학술대회논문] - Eca, I / 2001 / Numerical Prediction of Scale Effect in Ship Stern Flows with Eddy-Vicosity Turbulence Models / Proceedings of the 23rd Symposium on Naval Hydrodynamics
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