实验流体力学2011，Vol.25Issue(1)：54-58,5.
大型水平管道中玉米淀粉/空气混合物爆炸过程的实验研究
Explosion in cornstarch/air mixture in large-scale tube
摘要
Abstract
Motivated by the recent interest in the mechanism of the deflagration to detonation transition(DDT), research has been carried out the explosion of cornstarch/air mixture by the experiment system of a 32.4m in length and 0.199 inner diameter large-scale tube. The cornstarch/air mixture was ignited by the combustion wave from the aluminum/air mixture of length 4.2m close to the ignition end of the tube, the ignition is achieved via spark discharge of 40J initial energy. The processes of DDT in the two-phase flow in the experimental tube were analyzed by comparing the different concentration of mixtures. The study showed that a detonation wave was formed in the cornstarch/air mixture with the conrstarch concentration of 689g/m3 which is upper concentration limit of the explosion and the lower limit is 459g/m3.关键词
玉米淀粉/爆炸/点火/爆轰/铝粉Key words
cornstarch/ explosion/ ignition/ detonation/ aluminum power分类
数理科学引用本文复制引用
陈默,刘庆明,白春华,宫广东..大型水平管道中玉米淀粉/空气混合物爆炸过程的实验研究[J].实验流体力学,2011,25(1):54-58,5.基金项目
国家自然科学基金项目资助(10772032) （10772032）
爆炸科学与技术国家重点实验室自主课题资助(ZDKT08-2-6,YBKT09-1) （ZDKT08-2-6,YBKT09-1）
