摘要
针对燃烧室的结构设计与性能优化,基于三维数值模拟方法研究了不同主燃孔位置下的燃烧室空气分配特性、多物理场分布以及性能参数的变化规律。结果表明,主燃孔位置改变对空气分配比例、燃烧效率以及总压损失的影响较小,而对回流区结构、高温区以及出口温度场分布的影响较大;随着内侧主燃孔向上游移动,燃烧室的回流区和出口温度场分布得到有效改善;当内侧主燃孔与喷嘴之间的距离由65.3mm减小到63.3mm时,燃烧室出口温度分布系数(outlet temperature distribution factor,OTDF)可降低0.043。
Aiming at the structural design and performance optimization of combustor,the air distribution characteristics,mulTiphysical field distribution and performance parameters of the combustor under dfferent locations of primary holes were studied based on three-dimensional numerical simulation method.The results show that the change of primary hole position has litle influence on air distribution ratio,combustion efficiency and total pressure loss.But change of primary hole position has great influence on the structure of reflux zone,high temperature zone and outlet temperature field distribution.As the inner primary hole moves upstream,the reflux zone and outlet temperature field distribution of combustor are improved effectively.When the distance between the inner primary hole and the nozzle is reduced from 65.3 mm to 63.3 mm,the outlet temperature distribution factor(OTDF)of the combustor can be reduced by 4.3%.
作者
姚建朋
赵宁波
徐宏昊
Yao Jianpeng;Zhao Ningbo;Xu Honghao(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China)
出处
《燃气轮机技术》
2023年第3期27-32,共6页
Gas Turbine Technology
基金
国家科技重大专项(2017-Ⅲ-0006-0031,J2019-Ⅲ-0014-0058)
关键词
燃气轮机
燃烧室
主燃孔
数值模拟
燃烧性能
gas turbine
combustor
primary hole
numerical simulation
combustion performance
