燃烧室出口径向温度分布试验及分析模型

A STUDY ON EXIT RADIAL TEMPERATURE PROFILE OF 2D EXPERIMENTAL COMBUSTOR

在二元试验燃烧室上,研究了四种掺混孔设计方案对燃烧室出口径向温度分布影响。结果表明,不同掺混孔设计方案对出口径向温度分布的影响有规律可循。本文建立了半经验半分析模型,能够由第一次试验得到的出口温度分布,推算修改后出口径向温度分布曲线的变化。模型计算结果和试验结果吻合。

The exit radial temperature profiles formed by four configurations of dilution hole design have been studied experimentally on a two-dimensional experimental combustor. According to the results the effect of different configurations of dilution hole design on combustor exit radial temperature profile shows certain regularity. A semi-empirical and semi-analytical model has been developed for predicting the exit temperature profile of gas turbine combustor.The model can predict the effect of change in dilution zone design or combustion operating conditions on the variation of combustor exit radial temperature profile based on exit temperatures meas-sured before change. The comparison of the predictions with the measurements shows excellent agreement. The model provides a quantitative design tool for adjustment of temperature profile of gas turbine combustor.