The characteristics of flame propagationduring explosion venting from cylindrical vessel
HU Jun~1, 2, WAN Shi-xin~2 , PU Yi-kang~2, JIA Fu~2, JAROSINSKI Jozef~3(1.Beijing Institute of Technology, Beijing 100081,China;2.Institute of Mechanics, Chinese Academy of Sciences, Beijing 100080, China;3.Technical University of Lodz, Poland)
The mechanism of interactions between combustion and venting induced flow is the basis of venting research. The pressure histories and flame propagation inside cylindrical vessel during venting process are measured and analyzed. The experimental results show that the developments of pressure and flame propagation have clear characteristics at different venting condition. The venting induced flow result in the flame acceleration, deformation and area increase, and the strength of venting induced flow is dominated mostly by the venting area. When small vent with low/medium venting pressure, the histories of pressure and flame is similar to closed combustion, when large vent and small vent with high venting pressure, the flame deformed drastically and the velocity of flame propagation were accelerated saliently.