里克-ZT型脉动燃烧器频率特性研究

The Experimental Research for Frequency Characteristics of the Rijke ZT Type Pulse Combustor

里克－ＺＴ型燃煤脉动燃烧器采用两端收口的办法，将燃烧室直径最大做到了１０００ｍｍ、长径比减小到４．５，初步解决了里克型脉动燃烧器的大型化问题。该型自激脉动燃烧器已非１／２波长管。本文用试验及力－声类比的分析方法，初步得到了里克－ＺＴ型脉动燃烧器的频率变化规律。

Rijke ZT type pulse combustor for coal solved preliminarily the problem of large scale pulse combustor by using the step figure with reduced area of both ends.The combustor diameter is 1 m and the ratio of total length to diameter is 4.5.The combustor is not a half wave length acoustic tube already.This paper studied the laws of frequency of Rijke ZT type pulse combustor by experiment and mechanic sound analogy methods.The results have special significance for designing this type of pulse combustor.