双级旋流环形燃烧室流场的数值分析与试验研究

为研究环形燃烧室出口温度分布特性,以某型燃气轮机双级旋流回流环形燃烧室作为研究对象,分别采用数值分析和试验的方法,研究该燃烧室流场特性和出口温度分布特性。数值模拟得到冷态流场特性和温度分布。根据部件试验结果详细分析出口温度沿周向分布和透平叶高分布特性,发现了局部高温影响出口温度分布系数的规律。并在此基础上调整旋流器和喷嘴的匹配关系,经过调试后出口温度分布系数有明显改善,而径向温度分布系数变化不大。结论证明该文的调试方法是可行的,为该类环形燃烧室出口温度场品质的改进提供了指导作用。

Numerical Analysis and Experiment Research on Flow Field of an Annular Combustor With a Dual-stage Swirler

In order to analyze characteristics of outlet temperature distributions,a reverse-flow annular combustor with a dual-stage swirler was studied numerically and experimentally.Cold flow fields characteristics and temperature distributions were obtained by numerical modeling.Temperature distribution along the circumferential direction and the height of turbine guide vane were studied in detail based on component experiment.It is found that local high temperature shows great influence on outlet temperature distribution factor.The quality of outlet temperature is improved after adjusting the match relationship between the swirler and the nozzle.However,the radial outlet temperature distributions factor keeps stable.It is concluded that the adjustment method is feasible and provides significant guidance for improvement of the outlet temperature quality of the annular combustor.