爆炸与冲击2018，Vol.38Issue(2)：455-464,10.DOI:10.11883/bzycj-2017-0117
半封闭空间明火引燃油气特性实验
Explosion of gasoline/air mixture ignited by pilot flame in semi-confined space
摘要
Abstract
A semi-confined vessel was built to study the explosion of the gasoline/air mixture ignited by a pilot flame.The flame propagation at different gasoline/air volume fractions were characterized through the flame images from a high-speed camera.The pressures development at different gasoline/air volume fractions were characterized according to the pressure data acquired by a high-frequency pressure sensor.The results showed that the gasoline/air volume fraction had a significant influence on the flame's species,propagation velocity,pressure and pressure rise rate.The flame exhibited an obvious zoning phenomenon,was observed to divide into a flame kernel and a flame front.The speed of the vertical flame front was faster than that of the horizontal flame front.The pressure development process went through four stages,and produced a phenomenon of two pressure peaks.A strong coupling effect was formed between the flame and the pressure wave in the process of the gasoline/air explosion关键词
半封闭空间/明火/火焰传播特性/压力发展特性Key words
semi-confined space/pilot flame/flame propagation characteristics/pressure development characteristics分类
数理科学引用本文复制引用
欧益宏,李润,袁广强,周建忠,王波,李阳超..半封闭空间明火引燃油气特性实验[J].爆炸与冲击,2018,38(2):455-464,10.基金项目
国家自然科学基金项目(51276195) （51276195）
重庆市自然科学基金项目(CSTC 2012jjA900015) （CSTC 2012jjA900015）
后勤工程学院学术创新科研启动经费资助项目(yz13-43805) （yz13-43805）
