基于CFD的海底管道油气泄漏扩散模拟分析-《集美大学学报（自然科学版）》

文章信息/Info

Title:: Simulation and Analysis of Diffusion of Oil and Gas Leakage from Submarine Pipeline Based on CFD

作者:: 吕国录1; 张军2; 杨云朋1; 刘志萌1; （1.集美大学轮机工程学院，福建厦门 361021；2.集美大学机械与能源工程学院，福建省清洁燃烧与能源高效利用工程技术研究中心，福建厦门 361021）

Author(s):: LYU Guolu1; ZHANG Jun2; YANG Yunpeng1; LIU Zhimeng1; (1.School of Marine Engineering，Jimei University，Xiamen 361021，China； 2.School of Mechanical and Energy Engineering，Fujian Province Key Laboratory of Energy Cleaning Utilization andDevelopment， Xiamen 361021，China)

Keywords:: submarine pipeline; oil and gas leakage; CFD; quantitative analysis

摘要:: 针对海底管道泄漏后的油气扩散特性进行了数值模拟研究。建立了海底管道上部区域的泄漏扩散模型，利用计算流体动力学(computational fluid dynamics，CFD)方法对该模型进行了油气泄漏后的扩散模拟，并定量分析了泄漏物扩散距离。模拟结果表明：该模型及模拟方法能够在一定程度上反映油气泄漏扩散真实情况，且随着含气率增大，大油滴越易破碎成大量的小油滴，溢油扩散范围更广；随着泄漏速度增大，溢油横向漂移距离逐渐增大，且变化接近线性分布；海流速度对溢油的横向漂移有直接影响，随着海流速度增大，溢油的射流高度不断减小。

Abstract:: The leakage diffusion model of the upper part of the submarine pipeline was established in order to study the characteristics of oil and gas diffusion after submarine pipeline leakage.By using the computational fluid dynamics (CFD) method, the oil gas diffusion after the leakage was stimulated and the diffusion distance was quantitatively analyzed.The results show that the model and the simulation method can reflect the real situation of the oil gas leakage and diffusion to some extent,and large oil droplets more easily break into small oil droplets with the increase of the gas content,which will result in a wider range. Results also reveal that the horizontal drifting distance of the spilled oil gradually increases in the leakage velocity with a linear distribution.It suggests that the current velocity has a direct influence on the horizontal drifting of the spilled oil,which bring about the continuous decrement of the jet height.