圆柱受限空间内喷雾燃烧振荡特性研究  

INVESTIGATION OF THE CHARACTERISTICS OF THERMAL INSTABILITY IN A CONFINED COMBUSTOR

作　　者：黎军[1] 田文栋[1] 魏小林[1] 吴东垠[1] 盛宏至[1] 

机构地区：[1]中国科学院力学研究所,北京100080

出　　处：《工程热物理学报》2001年第6期767-770,共4页Journal of Engineering Thermophysics

基　　金：中国科学院创新重大资助项目(No.KGCX2-301);国家重点基础研究发展规划资助项目(No.G1999022305);教

摘　　要：本文研究了圆柱受限空间内的喷雾火焰燃烧压力振荡的特性。为了更清楚地了解火焰的构造，首先测量了火焰的温度场。在较大的一次风和二次风变化范围内，测量了压力的振荡特性。结果表明：火焰的稳定是由回流区完成的，在较小的一次风燃料当量比和中等的二次风量时，振荡最强，达到 １００ Ｐａ左右的量级。其频率为 ２００～２３０ Ｈｚ左右。分析表明燃烧室中的振荡是轴向驻波振荡。The characteristics of instability in a confined combustor with liquid spray flame were investigated in this paper. The temperature distribution of the flame was obtained by measurements of thermocouple to give the flame structure. Pressure rms maps within the relatively wide ranges of primary and secondary airflow rates were taken. The results show that the spray flame is stabilized by the inner and outer recirculation zones. The highest level of pressure rme in the condition of this paper is about 100 Pa. The frequencies of instability are in the range of 200-230 Hz. This instability is believed to be an axial standing wave oscillation.

关 键 词：燃烧振荡 喷雾 圆柱受限空间 燃烧装置 压力振荡 燃料 

分 类 号：TK16[动力工程及工程热物理—热能工程] O643.21[理学—物理化学]