为了研究横流作用下海底管道微孔溢油运动轨迹及其影响因素,采用雷诺时均Navier-Stokes方程,结合标准k-e两方程模型和多相流VOF方法,在Fluent平台上建立二维数值模型。模拟结果与前人实验值对比,吻合较好。讨论了不同溢油初始速率与水流速率比值R0、溢油口密度弗劳德数Fr0(油品密度ro)对溢油水下漂移轨迹的影响,数值模拟结果反映出速率比值R0较小和油品密度ro较大时,由于溢油上浮慢,使污染范围增大,海面初现油膜的位置离溢油口水平距离较远,增加了溢油事故的发现和清理工作的难度。研究成果在海底管道溢油事故应急预报方面具有实际意义。 In order to study the locomotion trajectory and its influencing factors of micro-bore oil spill under cross-flow, a two-dimensional numerical model was established on the Fluent platform using the Reynolds-averaged Navier-Stokes equation, the standard k-e two-equation model and the multiphase flow VOF method. Compared with the previous experimental results, the simulation results are in good agreement. The effects of initial ratio of oil spill rate to water flow rate R0 and F0 Fr0 oil density on the drift trajectory of oil spill are discussed. The numerical simulation results show that the ratio R0 is small and oil is small When the product density ro is large, the scope of pollution increases due to the slow floating of oil spill, and the position of the original oil film on the sea surface is far away from the horizontal position of the oil spill, which increases the difficulty of finding and cleaning oil spill accidents. The research results have practical significance in the emergency forecast of oil spill accidents on the seabed.