文献类型：期刊文献

中文题名：高温升燃烧室流动与贫油熄火过程的影响规律

英文题名：Influence of Flow and Lean Blowout Process in High Temperature Rise Combustor

作者：陈坚 李建中 胡阁 陈霖周廷

第一作者：陈坚

机构：[1]贵州理工学院航空航天工程学院,贵阳550003;[2]江苏省航空动力系统重点实验室,南京210016

第一机构：贵州理工学院航空航天工程学院

年份：2022

卷号：48

期号：2

起止页码：76-82

中文期刊名：航空发动机

外文期刊名：Aeroengine

收录：CSTPCD;;北大核心:【北大核心2020】；

基金：国家自然科学基金(52166006);贵州省科学技术基金(黔科合基础-ZK[2021]一般279);贵州省科技计划项目(黔科合基础[2017]1069);贵州省教育厅创新群体重大研究项目(黔教合KY字[2018]026);贵州省普通高等学校工程研究中心项目(黔教合KY字[2018]007);江苏省“中小型绿色动力装置”工程实验室开放基金(CEPE2019011)资助。

语种：中文

中文关键词：高温升燃烧室;流动特征;贫油熄火;航空发动机

外文关键词：high temperature rise combustor;flow characteristics;lean blowout;aeroengine

摘要：为了研究高温升燃烧室在冷态和燃烧状态下的流动差异及其对贫油熄火过程的影响规律,采用粒子图像测速法(PIV)和高速相机对2种状态下流场结构及贫油熄火过程进行测量。结果表明:主燃孔和掺混孔射流与头部旋流存在相互作用,使得燃烧室流动处于自模化状态,其流场结构不随压损的改变而变化,但速度值随着压损的增大而提高;当量比的变化不会影响在燃烧状态下的流场结构,但影响速度值,且燃油喷射对头部流场存在一定影响;在冷态和燃烧状态下流场结构的差异最主要体现在局部回流区和气流速度上,燃烧状态下的轴向正速度约为冷态时的5~7倍,径向速度约为10倍;气流的流动方式对贫油熄火过程影响显著,在局部漩涡和垂直气流作用的区域火焰首先熄灭。
In order to study the flow difference and its influence on lean blowout process in high temperature rise combustor under non-reactive and reactive states,Particle Image Velocimetry(PIV)and high-speed camera were used to measure the flow field structure and lean blowout process under non-reactive and reactive states. The results show that the interaction between the jets of primary and dilution holes and the swirl of dome makes the combustor flow in a self modeling state. The flow field structure does not change with the change of pressure loss,but the velocity increases with the increase of pressure loss. The change of equivalence ratio does not affect the flow field in reactive state,but affect the velocity value,and the fuel injection has a certain influence on the flow field in the dome. The difference of flow field between non-reactive and reactive states are mainly reflected in the local recirculation zones and velocity. The axial positive velocity in reactive states is about 5~7 times that in non-reactive states and the radial velocity is about 10 times. The flow patterns of airflow have a significant effect on the lean blowout process,and the flame is extinguished firstly under the action of vortex and vertical flow.