关键词: 海底输油管道, 泄漏, 海水流速, 泄漏方向, 数值模拟

Abstract: Oil leakage caused by failure accident of submarine pipeline can harm marine environment and affect oil transportation. For different water flow velocities and leakage directions in the case of halfburial pipe, a 2D leakage under water model was calculated by flow filed analysis software FLUENT. The simulation results show that water velocities and leakage angles would effect oil diffusion underwater directly|greater diffusion would occur when oil leakage go against stream with 45°|with larger water flow velocity, more time would be spent for oil floating upon seaair surface, and larger effects on oil diffusion caused by leakage direction would be enhanced. The conclusions of the present work could provide reasonable basis to oil leakage emergency underwater .

Key words: Pipeline under the ocean, Leakage, Water flow velocity, Leakage direction, Numerical simulation