无隙锥形旋流器燃烧室中流场的分叉现象

A BIFURCATION PHENOMENON IN COMBUSTOR WITH A NON-SLOT CONICAL SWIRLER

本文概述了用实验方法验证的在无隙锥形旋流器燃烧室中发生的流场的分叉现象及其特性 ,并初步介绍了出现分叉现象的成因 ,从而揭示了这种燃烧室燃烧火焰脉动的根源。

A bifurcation phenomenon was discovered by experiments in a gas turbine combustor with a non-slat conical swirler.With different kind of perturbation,two different flow patterns may be found in the liner of this gas tubine combustor separately.The characteristics of these two flow patterns are quite different as described in great detail in this paper.In addition,a brief analysis of the causes for initiation of this phenomenon was made on the basis of the experiments.Therefrom it is shown,that this phenomenon will cause flame periodical fluctuation.