脉动燃烧特性随去耦室压力的变化(英文)

给出了自激脉动燃烧系统产生的燃烧振荡的实验结果。稳定的燃料和空气供给仍能产生燃烧振荡,并且可以通过调节去耦室压力来控制燃烧振荡,而不需要机械阀或空气阀。风机用于控制去耦室内相对压力,调节范围从-10～10kPa。测量了燃烧器沿轴向的温度和压力以及尾管出口处的烟气成分。实验观察及测量表明:在功率和当量比不变时,燃烧室及尾管温度、燃烧室平均压力、燃烧器的热效率随去耦室压力升高而升高;当去耦室压力高于或低于大气压力时,尾管中的传热系数可以提高10%～28%。

Variation of the Pulse Combustion Characteristics With Pressure in Decoupling Chamber

This paper described experimental results of combustion oscillations produced in a self-excited pulse combustion system. It is shown that combustion oscillations can be produced with a steady supply of fuel and air, requiring no mechanical or aerodynamic valves, and it can be controlled by adjusting the pressure in decoupling chamber as well. A blower was applied for adjusting the relative pressure from about ?10 to 10 kPa in decoupling chamber. The temperature and the pulse pressure distribution along the ...