선박 측면 파공에서의 기름 유출 방지를 위해 설계된 앵커형 봉쇄장치의 유동 해석

초록

In 2007, a lot of crude oil was spilled after the collision of the VLCC Hebei Spirit near the port of Daesan on the Yellow Sea coast of Taean County, South Korea. The development of technology to effectively prevent the leakage of crude oil due to the marine accidents has been ongoing for a long time. In recent years, the devices to prevent the release of oil from a damaged ship have been developed as an alternative to the accidents. Many experiments have been conducted to verify the performance of such devices. In this study, the experimental method pressurizing the water tank to satisfy the real hydrostatic pressure at the puncture of hull is compared to the experimental method using the gravity to satisfy the hydrostatic pressure. The comparison is performed with the computation fluid dynamics based on the finite volume method. The flow structure inside the tank with different shapes of puncture and the pressure changes in the cross-section of the punctures are investigated. And the drag forces acting on the anchor are compared between the pressured water and the gravity tank.