摘要本文以环氧丙烷(PO)为研究对象,以大型立式激波管为载体,开展了PO/空气混合物在不同真空度下的爆燃特性参数研究。在起爆能保持不变的条件下,分别改变了激波管内初始压力和燃料/空气比例,观测其爆燃特性参数的变化。结果表明:随着管体内初始压力的增加,环氧丙烷/空气混合物的爆轰压力及速度随之减小,甚至出现无法实现爆轰的现象;而随着混合物中燃料的增加,其爆轰压力和速度呈“n”型曲线,并在燃料/空气当量比在1.05时存在一极大值。本文为特殊低气压环境下的液体燃料抛撒、爆燃规律的研究提供一些可供参考的结果。33997
关键词:环氧丙烷(PO) 立式激波管 初始压力 爆轰 毕业论文设计说明书中文摘要
Title Detonation characteristics of liquid fuel-air under certain vacuum condition
Abstract
In this paper, propylene oxide is the research subject that was loaded in a vertical detonation tube with air, and the deflagration parameters of the ignited mixture were measured under different vacuum degrees. Initiation energy of the mixture was kept constant, and the initial pressure and fuel/air ratio was varied to compare the different deflagration parameters. The results show that the detonation pressure and velocity reduce with the increase of initial pressure in the tube, until the detonation cannot be achieved. Moreover, the detonation pressure and velocity varies in a “n”-shape curve with the fuel content in the tube raising, which peaks at a little more than stoichiometric ratio of fuel/air (1.05). This paper provides some meaningful results for the research on the liquid fuel dispersion, deflagration principle in some special low-pressure area.
Keywords: Propylene oxide(PO) Vertical detonation tube The initial pressure Detonation