선저청소로봇 저항성능 향상에 관한 수치적 연구
Numerical Study on the Enhancement of the Resistant Performance of ROV
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초록
The flow around a remotely-operated vehicle (ROV) has been investigated numerically to improve the resistant performance by modifying the hull form of the ROV. In the case of the base hull form considered in this study, form drag rather than friction drag was the dominant component of total drag. Subsequently, the surfaces that were most susceptible to local pressure effects were modified to give them a more streamlined shape. Eleven different hull forms were chosen to undergo surface modification for drag reduction. In addition, four different boat-tail appendages with different slant angles were installed at the stern to reduce the wake vortices that are induced by the local regions of very low pressure. Consequently, a total of 11 different hull forms for drag reduction were considered. The final hull form, which combined the hull for which surface modification resulted in the lowest drag with a boat-tail appendage with a 15-degree slant angle, resulted in a drag reduction of 20%.
Abstract
The flow around a remotely-operated vehicle (ROV) has been investigated numerically to improve the resistant performance by modifying the hull form of the ROV. In the case of the base hull form considered in this study, form drag rather than friction drag was the dominant component of total drag. Subsequently, the surfaces that were most susceptible to local pressure effects were modified to give them a more streamlined shape. Eleven different hull forms were chosen to undergo surface modification for drag reduction. In addition, four different boat-tail appendages with different slant angles were installed at the stern to reduce the wake vortices that are induced by the local regions of very low pressure. Consequently, a total of 11 different hull forms for drag reduction were considered. The final hull form, which combined the hull for which surface modification resulted in the lowest drag with a boat-tail appendage with a 15-degree slant angle, resulted in a drag reduction of 20%.
참고문헌 (6)
- 서장훈, "선저청소로봇 저항성능 전산해석", 한국해양공학회지, 22(6), pp.64~74 (2008), 한국해양공학회
- 송시명, "선박 및 항만 검사용 ROV 의 운영 시스템 개발", SNAK, pp.445~449 (2004)
- 이욱, "수동제어 장치를 이용한 3차원 자동차 모형의 항력감소", 2007년도 대한기계학회 춘추학술대회, pp.2407~2411 (2007), 대한기계학회
- 이종식, "300m 급 수중 ROV의 개발에 관한 연구", 한국해양공학회지, 8(1), pp.50~61 (1994), 한국해양공학회
- Nakamura, M, "Development of an ROV Operated Both as Towed and Self-Propulsive Vehicle", Ocean Engineering, 28, pp.1~43 (2000)
- Sayer,P, "Hydrodynamic Loads During the Deployment of ROVs", Ocean Engineering, 35, pp.41~46 (2008)