井喷失控可燃性蒸气云形成数值模拟研究  

Research on numerical simulation of flammable vapor cloud diffusion in well blowout

作　　者：雷文章[1,2] 吴光武[1] 艾志久[1] 王其华 付小丽[3] 

机构地区：[1]西南石油大学机电工程学院,成都610500 [2]中国石油集团安全环保技术研究院,北京100083 [3]海洋石油工程股份有限公司大港事业部,天津300270

出　　处：《中国安全生产科学技术》2008年第6期66-69,共4页Journal of Safety Science and Technology

基　　金：中国石油集团公司2006年重点资助项目(编号:06B7101)

摘　　要：利用计算流体力学方法(CFD)对井喷失控发生后天然气喷射流进行数值模拟研究,在有限元的基础上建立模型,采用紊流模型求解Navier-Stokes方程,计算井喷失控后任意时刻可燃气体浓度分布,考察不同风速对气体扩散的影响,最后得出井喷后易爆蒸气云稳定时间随风速变化规律。数值模拟计算结果与实验结果吻合较好,验证了紊流模型和数值算法的可靠性。该研究成果可对井喷失控后所形成的可燃性天然气易燃区域进行预测,有助于预防井场重大天然气着火、爆燃事故的发生。The numerical simulation of gas diffusion in well blowout was based on Computational fluid dynamics （CFD） method. The Navier-Stokes equations were solved by k-ε model based on finite element and the flammable vapor cloud concentration field varying with time was calculated in different velocity of wind. The law of stable-time changing with velocity of wind after well blowout was obtained in this paper. The results of calculation were well in agreement with experimental data, it could be used to predict the hazard of gas flammable region and avoid the accident of explosion.

关 键 词：井喷失控 蒸气云 气体扩散 CFD 数值模拟 

分 类 号：X928.03[环境科学与工程—安全科学] X937