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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
WangGook Lee (Inha University) Sang-Hyun Kim (Inha University) DooJin Jung (Inha University) Sooyeon Kwon (Inha University)
저널정보
한국해양공학회 한국해양공학회지 한국해양공학회지 제36권 제2호(통권 제165호)
발행연도
2022.4
수록면
91 - 100 (10page)

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초록· 키워드

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In general, the effect of roll motion is not considered in the study on maneuverability in calm water. However, for high-speed twin-screw ships such as the DTMB 5415, the coupling effects of roll and other motions should be considered. Therefore, in this study, the estimation of maneuverability using a 4-degree-of-freedom (DOF; surge, sway, roll, yaw) maneuvering mathematical group (MMG) model was conducted for the DTMB 5415, to improve the estimation accuracy of its maneuverability. Furthermore, a study on the change in turning performance according to the fin angle was conducted. To accurately calculate the lift and drag forces generated by the fins, it is necessary to consider the three-dimensional shape of the wing, submerged depth, and effect of interference with the hull. First, a maneuvering simulation model was developed based on the 4-DOF MMG mathematical model, and the lift force and moment generated by the side fins were considered as external force terms. By employing the CFD model, the lift and drag forces generated from the side fins during ship operation were calculated, and the results were adopted as the external force terms of the 4-DOF MMG mathematical model. A 35° turning simulation was conducted by altering the ship’s speed and the angle of the side fins. Accordingly, it was confirmed that the MMG simulation model constructed with the lift force of the fins calculated through CFD can sufficiently estimate maneuverability. It was confirmed that the heel angle changes according to the fin angle during steady turning, and the turning performance changes accordingly. In addition, it was verified that the turning performance could be improved by increasing the heel angle in the outward turning direction using the side fin, and that the sway speed of the ship during turning can affect the turning performance. Hence, it is considered necessary to study the effect of the sway speed on the turning performance of a ship during turning.
#Maneuverability #Turning ability #Side fin #MMG mathematical model #Heel angle #CFD

목차

ABSTRACT
1. Introduction
2. 4-DOF Maneuvering Motion Equation
3. Numerical Analysis of the Side Fin Lift and Drag
4. 35° Turn Simulation in Consideration of the Side Fin Attack Angle
5. Discussion
References

참고문헌 (13)

참고문헌 신청
Celik, I.B., Ghia, U., Roache, P.J., Freitas, C.J., Coleman, H., & Raad, P.E. (2008). Procedure for Estimation and Reporting of Uncertainty Due to Discretization in CFD Applications. Journal of Fluids Engineering, Transactions of the ASME, 130(7), 0780011–0780014. https://doi.org/10.1115/1.2960953 Crossref Dash, A.K., Nagarajan, V., & Sha, O.P. (2015). Uncertainty Assessment for Ship Maneuvering Mathematical Model. International Shipbuilding Progress, 62(1–2), 57–111. https://doi.org/10.3233/ISP-150117 Crossref ITTC Resistance Committee. (2017). Uncertainty Analysis in CFD Verification and Validation Methodology and Procedures. ITTC - Recommended Procedures and Guidelines, 1–13. google schola Lihua, L., Peng, Z., Songtao, Z., & Jia, Y. (2019). Simulation Analysis of Fin Stabilizers on Turning Circle Control During Ship Turns. Ocean Engineering, 173, 174–182. https://doi.org/10.1016/j.oceaneng.2018.12.067 Crossref Olivieri, A., Pistani, F., Avanzini, A., Stern, F., & Penna, R. (2001). Towing Tank Experiments of Resistance, Sinkage and Trim, Boundary Layer, Wake, and Free Surface Flow Around a Naval Combatant INSEAN 2340 Model. Security, 421, 1–42. google schola

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