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

Abstract

In 2007, a large volume of crude oil was spilled following the collision of the VLCC Hebei Spirit near the port of Daesan on the Yellow Sea coast of Taean County, South Korea. Technology to effectively prevent the leakage of crude oil owing to marine accidents has been ongoing for years. Recently, devices such as the anchor type liquid spill stopper have been developed in response to these incidents. Numerous experiments have been conducted to verify the performance of such devices. In this study, an experimental method wherein a water tank is pressurized to satisfy the actual hydrostatic pressure at the puncture site on the hull was compared to an experimental method using gravity to satisfy the hydrostatic pressure. The comparison was performed using computational fluid dynamics based on the finite volume method. The flow characteristics inside the tank for punctures of various shapes and the pressure changes in the cross-sections of the punctures were investigated. Furthermore, the drag forces acting on the anchor were compared between the pressurized water and gravity tank.