摘要
提出一种适用于气体燃料燃烧的横隔板式定容燃烧弹系统,在此系统中进行了甲烷空气射流引燃的实验研究。通过对压力曲线及火焰传播纹影图片进行分析,探究孔径、初始压力和当量比等初始条件对射流引燃过程的影响。研究结果表明,一定范围内,增大孔径可以提高甲烷燃烧速率;随着当量比的增加,压力峰值升高并且对应出现时刻提前;在不同当量比和孔径下,初始压力增大,压力峰值随之增加。
This paper presents a constant volume combustion bomb system with an orificed adaptor built in. The system is suitable for gas fuel combustion and experiments for methane-air jet ignition are carried out in it. By analyzing the pressure curve and the schlieren picture of flame propagation, the paper explores the effect on jet ignition by initial conditions such as aperture, initial pressure and equivalence ratio. The results show that with the increasing of aperture, the burning rate of the methane is accelerated in a certain range. With the increase of the equivalent ratio, the peak pressure is raised and the corresponding occurrence time is advanced. In different equivalence ratios and aperture, the peak pressure increases with the increasing of initial pressure.
出处
《承德石油高等专科学校学报》
CAS
2013年第6期24-28,共5页
Journal of Chengde Petroleum College
基金
国家自然科学基金资助项目(车用发动机-有机朗肯循环联合系统运行机理及协同控制理论研究):51376011
北京市自然科学基金项目
北京市教育委员会科技计划重点项目(有机朗肯循环余热回收系统与内然机全工况匹配特性研究):KZ201410005003
承德市科学技术研究与发展项目(天然气发动机动力性能恢复及性能优化研究):20122251
关键词
定容燃烧弹
射流引燃
孔径
初始条件
constant volume combustion bomb
jet ignition
aperture
initial condition
