摘要
开发研制了Helmholtz型膜片阀式脉动燃烧器及其实验数据采集系统,脉动燃烧器的功率为25 kW,以液化石油气为燃料,其工作频率从60 ~105 Hz可调. 研究了脉动燃烧器燃烧室内压力及其尾管传热特性,结果表明,脉动流传热系数是非脉动流传热系数的2.5~3.2倍.
A Helmholtz-type pulse combustion system was designed. The capacity of the combustion system is 25 kW and liquefied petroleum gas is used as a fuel with the features of flapper valves and frequency rang from 60 to 105 Hz. A pressure inside the combustion chamber of pulse combustor is monitored by a pressure transducer and the variation of the pressure amplitude and frequency with the length of tail tube changing are discussed. The heat transfer coefficients of oscillating flow produced by pulse combustor and nonoscillating flow are obtained. It indicates that the heat transfer coefficient of oscillating flow is 2.5 to 3.2 times greater than that of nonoscillating flow.
出处
《上海理工大学学报》
CAS
北大核心
2001年第3期263-266,共4页
Journal of University of Shanghai For Science and Technology
基金
国家自然科学基金资助项目(59776037)
关键词
脉动燃烧器
压力特性
传热系数
尾管
pulse combustor
pressure characteristic
heat exchange coefficient
