摘要
为了研究受限空间油气泄漏的运动规律，及时有效地查明事故隐患，预报和预防各类事故的发生，以挽救人民的生命财产，基于对油气泄漏的分析，建立了油气泄漏的仿真模型。采用压力和速度耦合场的SIMPLE算法，完成了地下坑道油气泄漏过程的数值模拟研究，数值模拟结果与实验结果吻合较好。研究发现，地下坑道的油气泄漏可分为4个阶段：孕育阶段，直线增长阶段，增长速率递减阶段和增长停滞阶段。
Aiming to study the motion law of gasoline-air mixture leakage in confined space ,timely and effeetive.ly identify the accident potential, predict various types of accidents and prevent them from happening, and so to save people＇ s lives and properties, and based on the analysis of gasoline-air mixture leakage, a simulation model of gasoline-air mixture leakage is established. Coupled with the pressure and velocity fields＇ SIMPLE algorithm, the gasoline-air mixture leakage in underground tunnels is numerically simu- lated ,and the result of numerical simulation is almost in accordance with that of experiment. The research shows that the gasoline-air mixture leakage in underground tunnels can be divided into four stages, which are embryonic stage, linear growth phase, growth rate decreased stage, and growth stagnant stage.
出处
《后勤工程学院学报》
2011年第2期37-41,共5页
Journal of Logistical Engineering University
基金
重庆市自然科学基金资助项目(CSTC,2009BA6061
CSTC,2009BA0062
CSTC,2009BA6019)
关键词
地下坑道
油气泄漏
数值模拟
underground tunnel
gasoline-air mixture leakage
numerical simulation
