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[1]李新宏　朱红卫　陈国明　孟祥坤.海底管道泄漏天然气扩散规律数值模拟[J].油气储运,2016,35(预出版):1-6.
　LI Xinhong,ZHU Hongwei,CHEN Guoming,et al.Numerical simulation on the gas diffusion law due to leakage of submarine pipeline[J].Oil & Gas Storage and Transportation,2016,35(预出版):1-6.
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海底管道泄漏天然气扩散规律数值模拟

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 35 期数: 2016年预出版期 页码: 1-6 栏目: 出版日期: 2060-12-31
Title:
Numerical simulation on the gas diffusion law due to leakage of submarine pipeline
作者:
李新宏　朱红卫　陈国明　孟祥坤
Author(s):
LI Xinhong;  ZHU Hongwei;  CHEN Guoming;  MENG Xiangkun
关键词:
海底管道; 泄漏; 天然气; 扩散规律; 数值仿真;  计算流体动力学
Keywords:
submarine pipeline;  leakage;  natural gas;  diffusion law;  numerical simulation;  computational fluid dynamics(CFD)
分类号:
TE88
文献标志码:
A
摘要:

为研究浅水区域海底管道泄漏天然气扩散规律， 减少重大事故的发生。基于计算流体动力学（CFD） 理论， 建立海底天然气管道泄漏事故后果预测和评估模型。通过用户自定义函数 （UDF） 给出海流流速分布情况， 结合 VOF 模型和κ-ε 湍流模型， 实现对泄漏天然气扩散行为的模拟， 研究不同泄漏速率、 泄漏孔径及海流流速对天然气在海水中扩散行为的影响。结果表明， 海底天然气泄漏扩散大致经历气云团→大气泡→小气泡 3 种形态的变化过程；泄漏速率越大， 扩散气体气泡半径越大， 与海水掺混比例越小， 抵达海面的时间越短；泄漏孔径变化对天然气扩散的影响与泄漏速率变化影响相同， 但泄漏孔径变化对天然气扩散形态的影响更为明显；海流流速越大， 气体扩散轨迹与海底的夹角越小， 沿海流方向的扩散距离越大。

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更新日期/Last Update: 2015-12-30