Lean blowout mechanism of coupled recirculation zone in concentric staged combustor

ZOU Bo-wen; XU Quan-hong; CAO Wen-yu; ZHANG Chi; LIN Yu-zhen

Chinese

您当前的位置：

首页 >

文章列表页 >

Lean blowout mechanism of coupled recirculation zone in concentric staged combustor

更新时间：2026-07-07

- Lean blowout mechanism of coupled recirculation zone in concentric staged combustor
- Vol. 28, Issue 8, (2013)
- 作者机构：
  
  北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京,100191
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
移动端阅览
ZOU Bo-wen, XU Quan-hong, CAO Wen-yu, et al. Lean blowout mechanism of coupled recirculation zone in concentric staged combustor[J]. 2013, 28(8).
DOI：

ZOU Bo-wen, XU Quan-hong, CAO Wen-yu, et al. Lean blowout mechanism of coupled recirculation zone in concentric staged combustor[J]. 2013, 28(8). DOI：

摘要

针对中心分级模型燃烧室开展了常压贫油熄火试验和慢车状态贫油熄火试验

并结合贫油熄火时的主/预燃级耦合回流区流场数值模拟分析了该燃烧室的贫油熄火机理.结果表明:与常规燃烧室的贫油熄火机理不同

中心分级燃烧室的贫油熄火油气比是由预燃级和主燃级共同形成的耦合回流区所决定的.耦合回流区的回流量主要由主燃级回流主导

在该研究的中心分级燃烧室结构下

回流区从主燃级卷吸的气量是预燃级本身气量的4.3倍

导致按预燃级气量计算的熄火当量比达到2~2.5

远高于常规燃烧室头部的熄火当量比0.4~0.5.

Abstract

Experiments under atmosphere and idle states were carried out to analyze the mechanism of lean blowout by numerical simulation of coupled recirculation zone formed in main stage and pilot stage.The results show that unlike conventional combustor

the lean blowout fuel-air ratio of concentric staged combustor is determined by coupled recirculation zone formed by pilot and main swirlers.The recirculating flow in the coupled zone is dominated by the main stage in this concentric staged combustor

and air entrainment from the main stage is 4.3 times of that from the pilot stage itself

leading to the lean blowout equivalence ratio of pilot stage up to 2 to 2.5

far higher than that of 0.4 to 0.5 of conventional combustor dome.

关键词

Keywords

references

Views

1348

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Numerical prediction of lean blowout in aero-engine combustor

Combustor Dome Design with Three Swirlers for Widening the Operation Stability Range

The Effect of Fuel-Circumferential-Staging on Lean Blowout Limit at Idle Condition

The Effect of Flow Field and Fuel Spray of Combustor with Swirl Cup on Lean Blowout Limit at Idle Condition

Influencing factors of the lean blowout of alternative fuels

Related Author

CAI Wen-xiang

ZHAO Jian-xing

HU Hao-sheng

DANG Xin-xian

WU Xiao-song

YUAN Yi-xiang

LIN Yu-zhen

LIU Gao-en

Related Institution

College of Mechanical Engineering, Nanjing University of Science and Technology

ChinaCollege of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics

Beijing University of Aeronautics and Astronautics

Shanghai JiaoTong University

北京航空航天大学能源与动力工程学院

AI问答

Postal code：100079
Tel：（010）53879206 Email：tmw@bjxintong.com.cn
Technical support is provided by Beijing Founder electronics co., LTD 京ICP备09082226号-64 京公网安备11010602201714号
It is recommended to read the content of this site in Chrome&IE9+. Please switch to extreme mode in browser 360.
Cookies We use cookies to help provide and enhance our service and tailor content. By continuing, you agree to the use of cookies.

⁰