Influence of air split of a radial swirler on ignition and extinction characteristics

DAI Wei; LIN Yu-zhen; XU Quan-hong; ZHANG Chi; GONG Jing

doi:10.13224/j.cnki.jasp.2016.03.011

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Influence of air split of a radial swirler on ignition and extinction characteristics

更新时间：2026-07-07

- Influence of air split of a radial swirler on ignition and extinction characteristics
- Vol. 31, Issue 3, Pages: 608-615(2016)
- 作者机构：
  
  1. 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
  2. 中国航天科技集团公司中国运载火箭技术研究院科研计划部,北京,100076
- 作者简介：
- 基金信息：
- DOI：10.13224/j.cnki.jasp.2016.03.011
  CLC：
- Published：2016
- 稿件说明：
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代威, 林宇震, 许全宏, 张弛, 龚静. 径向旋流器气量分配对点火熄火特性的影响[J]. 航空动力学报, 2016, 31(3): 608-615.

doi: 10.13224/j.cnki.jasp.2016.03.011
代威, 林宇震, 许全宏, 张弛, 龚静. 径向旋流器气量分配对点火熄火特性的影响[J]. 航空动力学报, 2016, 31(3): 608-615. DOI： 10.13224/j.cnki.jasp.2016.03.011.

doi: 10.13224/j.cnki.jasp.2016.03.011 DOI：

摘要

针对第2级径向旋流器的气量分配对点火熄火特性的影响进行了研究.试验结果表明:对于采用同向旋转强旋流的旋流杯

空气雾化喷嘴在气液比大于3后会形成稳定的液雾

在常温常压起动点火以及熄火工况下

燃烧室中的燃油已基本雾化完全.第1

2级旋流器的气量比从0.8变化至1.2后

旋流杯液滴韦伯数大于40

液滴已进行充分的二次雾化

增加第2级旋流器气量不会进一步改善雾化质量

因此对点火和熄火特性基本无影响.

Abstract

The air split of the second stage of the radial swirler was taken as the main design parameter for the ignition and extinction characteristics. Test study showed that the fuel in the chamber

atomized by the co-rotating swirler cup with strong swirl number

has been basically atomized at ignition and lean blow-out conditions of atmospheric pressure and room temperature as a stable fuel atomized at the air-fuel-ratio greater than 3. The droplet had sufficient secondary atomization when the air split ratio of the primary and the second stage of swirlers changed from 0.8 to 1.2

making the swirl cup droplet Weber number greater than 40. Therefore

increase of the second stage of swirler air split will not further improve the atomization quality

there is no influence on the ignition and extinction characteristics.

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Related Institution

China Aviation Powerplant Research Institute, Aviation Industry Corporation of China

National Key Laboratory on Aero-Engine, School of Jet Propulsion, Beijing University of Aeronautics and Astronautic

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Sichuan Gas Turbine Establishment，Aero Engine Corporation of China

Hunan Aviation Powerplant Research Institute， Aero Engine Corporation of China

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