摘要
采用数值方法对燃气轮机在燃烧室油气比和进口气流温度一定时,燃烧室压力分别为0.6、1.0、1.2、1.4MPa工况下的火焰辐射换热进行模拟计算。结果表明,随着燃烧室压力增加,主燃区烟颗粒浓度、火焰筒壁的辐射热流量明显增加;主燃区温度随压力增加呈下降趋势;燃气温度沿火焰筒轴向逐渐下降,主燃区至中间区急剧下降,其下降速率随压力增加而变快,而掺混区受压力变化影响较小。
By using numerical method,the numerical simulation of flame radiation heat transter at cer- tain oil -air ratio and inlet air flow temperature,as well as the pressure in combuster being 0.6,1.0,1. 2,and 1.4 MPa respcetively,has been carried out, the results show that the concentration of smoke particles in the main combustion zone and the radiation heat flow rate in flame barrel wall increase rap- idly as the pressure in combuster increases, however, the increasing speed rate is gentle;the tempera- ture in main combustion zone has a decreasing tendency as the pressure increases：the temperature of fuel gas is gradually decreasing along the axial direction of flame barrel, and decreasing drastically from the main combustion zone to the intermediate zone,and its decreasing speed rate turns to quick as the pressure increases, but the pressure change has little effect upon the mixedly burning zone.
出处
《热力发电》
CAS
北大核心
2012年第5期43-46,共4页
Thermal Power Generation
关键词
燃气轮机
燃烧室
压力
火焰辐射
燃气温度
烟颗粒浓度
gas turbine
combustor
pressure
flame radiation
temperature of fuel gas
concentration of smoke particles
