燃料预混特性对燃烧室燃烧特性的影响  

Effects of Fuel Premixed Characteristics on Combustion Characteristics of Combustor

作　　者：邢畅[1] 邱朋华[1] 刘栗[1] 陈科峰[1] 孙强[1] 杨牧歌 吴少华[1] 秦裕琨[1] 

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《推进技术》2016年第11期2114-2119,共6页Journal of Propulsion Technology

基　　金：国家科技支撑项目(2012BAA11B02)

摘　　要：为了获得燃烧室燃料预混特性和燃烧特性之间的变化规律,通过分析不同燃料分级方案对燃料预混特性的影响,对燃烧室在不同燃料预混特征数下的燃烧特性进行了实验研究。研究表明:在不同值班燃料比条件下,燃料预混特性变化对NOx生成量的影响趋势不同;在值班燃料比为30%和20%条件下,主燃料管的燃料喷射速度能够加强燃料预混均匀性;在值班燃料比为10%和5%条件下,主燃料管的燃料量越低,燃料预混均匀性越好;燃料预混特性变化对燃烧室出口平均温度、出口温度分布系数和总压恢复系数没有影响。In order to obtain the change rules between the fuel premixed characteristics and combustion characteristics of gas turbine combustor,the combustion characteristics experiences were researched at the different fuel premixed characteristic numbers based on the effects of the different fuel staging conditions on the fuel premixed characteristics. The results indicate that：（1） At the different pilot fuel ratios,impact trends of NOx emissions on the variations of fuel premixed characteristics are different.（2） When the pilot fuel ratios are 30%and 20%,the jet velocity of main fuel tubes can enhance the fuel premixed uniformity. When the pilot fuel ratios are 10% and 5%,the smaller the mass flow of main fuel tubes is,the better the fuel premixed uniformity becomes.（3） The variations of fuel premixed characteristics do not influence the outlet average temperature,outlet temperature distribution factor and total pressure recover factor of combustor.

关 键 词：贫预混燃烧室 燃料预混特性 燃料分级 燃烧特性 氮氧化物 

分 类 号：V231-2[航空宇航科学与技术—航空宇航推进理论与工程]