油气管道中可燃气体爆炸特性的数值模拟  

Numerical Simulation of Explosive Characteristics of Flammable Gas in Oil&Gas Pipeline

作　　者：张峥[1] 陈思维[1] 杜杨[1] 

机构地区：[1]中国人民解放军后勤工程学院,重庆400016

出　　处：《管道技术与设备》2008年第5期1-2,5,共3页Pipeline Technique and Equipment

基　　金：国家自然科学基金资助项目(50676106)

摘　　要：以RNGk-ε湍流模型及EBU-Arrehnius燃烧模型为基础,建立了可燃气体单步化学反应湍流爆炸模型,以有限体积法求解爆炸流动及反应控制方程,从而对二维油气管道中可燃气体爆炸的过程及规律进行了数值模拟,模拟结果与实验数据有着较好的一致性。所做的工作为油气管道受限空间中可燃气体爆炸特性及规律的进一步研究及工业防爆抑爆技术的工艺实施、系统设计和关键参数计算提供理论依据。The turbulent combustion model of explosion in closed pressure pipes is presented on the basis of a single-step chemical reaction. The RNG（ renormalization group）k-ε model is adopted. According to the high rate of reaction and the turbulence phenomena, the EBU （eddy broken up）-Arrehnius combustion model is applied. The governing equations of flow and the reaction equations are solved simultaneously with the finite volume method （FVM）. Explosive characteristics and rules in a two-dimensional closed and restricted space is studied through numerical simulation. The result that agrees with our experimental results lays a foundation for further studies of flammable gas explosion processes and the prevention of explosion disasters.

关 键 词：油气管道 可燃气体 爆炸特性 数值模拟 

分 类 号：TK16[动力工程及工程热物理—热能工程]