应用隔板式定容燃烧弹的甲烷-空气混合气射流引燃研究  

Study of Jet Ignition of Methane in a Divided Constant Volume Combustion Bomb

作　　者：刘昊[1] 张红光[1] 赵光耀[1] 白小磊[1] 王震[1] 孙娜[2] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124 [2]北京交通大学机械与电子控制工程学院,北京100044

出　　处：《兵工学报》2014年第10期1667-1673,共7页Acta Armamentarii

基　　金：国家自然科学基金项目(51376011);北京工业大学第十二届研究生科技基金项目(ykj-2013-9302);北京市自然科学基金项目和北京市教育委员会科技计划重点项目(KZ201410005003)

摘　　要：在定容燃烧弹内添加带孔横隔板实现甲烷-空气混合气的射流引燃,可以达到甲烷-空气混合气快速燃烧的目的。利用纹影法研究了在不同的初始条件下,隔板位置、隔板孔径及隔板孔数等不同横隔板参数,对射流引燃实现甲烷-空气混合气快速燃烧的影响。将有隔板与无隔板条件下,单孔隔板与多孔隔板条件下的实验数据进行对比,结果表明:使用横隔板后较无隔板情况可以提高甲烷-空气混合气的燃烧速率;在文中实验条件下的隔板式定容燃烧弹中,横隔板在中间位置时主燃烧室最易发生燃烧现象;甲烷-空气混合气的燃烧压力峰值随横隔板孔径和孔数的增加呈现先增加后减小的趋势,燃烧压力峰值出现时刻随横隔板孔径和孔数的增加而提前。In order to improve the methane-air mixture combustion rate,the experiment of a divided constant volume combustion bomb is carried out for fast burning of methane-air mixture by jet ignition. The effects of baffle plate parameters,such as location,orifice diameter and orifice number,on fast burning of methane-air mixture by jet ignition under various initial conditions are studied by means of schlieren method. The experimental data of constant volume combustion bombs with and without single and plural orificed baffle plates are compared. The results show that the combustion rate is improved by an orificed baffle plate. The location C in the constant volume combustion bomb is the best place since the main combustion chamber is easy to burn under certain experimental conditions. The peak combustion pressure of the methane-air mixture increases first and then decreases with the increase in the diameter and number of orifices.

关 键 词：工程热物理 定容燃烧弹 甲烷-空气混合气 横隔板 射流引燃 

分 类 号：TK46[动力工程及工程热物理—动力机械及工程]