摘要
在石油、化工、矿业等行业中 ,密闭容器内可燃气体爆炸的事故屡屡发生 ,造成了巨大的经济损失和人员伤亡。有效地预测爆炸超压 ,研究可燃气体爆炸成灾模式及其防治技术具有重要的社会意义和经济意义。为此 ,从流体力学和化学反应动力学方程出发 ,建立了数学模型 ,采用SIMPLE算法 ,对大型球形密闭容器内可燃气体爆炸过程进行了数值模拟 ,获得了不同时刻爆燃的速度场、密度场、浓度场、温度场 ,为工程上防爆、抑爆、泄爆提供了理论基础和数据。
The accidents of flammable gas explosion in closed vessels often take place in the industries of petroleum, chemicals, mines, etc. causing large economic loss and people injuring. It has important social and economical signification to predict the explosion overpressure effectively, and study the disaster pattern and control methods of flammable gas explosion. So. based on fluid mechanics and chemical reaction dynamics equations, a mathematical model is built. SIMPLE algorithm is used to numerically simulate the explosion process of flammable gas in large closed spherical vessels. The deflagration velocity field, density field, concentration field and temperature field were obtained at different time. The theory foundation and calculation results can be applied in the design of deflagration prevention, suppression and venting in industry.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2004年第4期101-103,共3页
Natural Gas Industry
基金
辽宁省自然科学基金 (2 0 0 2 10 6 4 )资助项目
关键词
球形密闭容器
可燃气体
爆炸过程
石油行业
化工行业
矿业
爆炸事故
安全技术
Accident prevention
Algorithms
Computer simulation
Disaster prevention
Economic and social effects
Explosions
Fluid mechanics
Mathematical models
Pressure vessels
Reaction kinetics
Velocity measurement
