燃烧室温度剖面对静叶端壁冷却的影响  

The Influence of Combustor Outlet Temperature Profile on a Vane Endwall

作　　者：李雪英[1] 任静[1] 蒋洪德[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《工程热物理学报》2015年第4期752-755,共4页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.51376099);中国博士后基金资助项目

摘　　要：为了降低污染物排放,燃气轮机燃烧方式的改变所带来的透平进口温度剖面的改变,会对透平一级静叶冷却带来较大的影响。本文根据真实燃气轮机透平入口的温度条件,抽象出三种具有代表性的燃烧室出口温度剖面,分别研究其对端壁冷却的影响。结果表明,燃烧室出口温度剖面会对静叶端壁近压力面侧、吸力面的上下角区温度分布造成较大影响。In order to reduce the pollutant emissions,the combustor switches to premixed combustion which changes the temperature profile at the turbine inlet.This will have a great effect on the cooling of first stage vanes.In this work,three typical temperature profiles were abstracted based on real engine conditions to investigate the different influences on endwall cooling.The results indicated that the change in temperature profile mainly affected the endwall in the near pressure side region and suction side in the up and bottom trianglar region.

关 键 词：燃烧室温度剖面 端壁 气膜冷却 

分 类 号：TK471[动力工程及工程热物理—动力机械及工程]