Research on Stable Mechanism and Flame Morphology of Multi-nozzle Array Combustor with Zoned Combustion

WEI Xiaopo; XIONG Yan; LIU Zhigang; LU Xinggang; WANG Hui

doi:10.19805/j.cnki.jcspe.2026.250652

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Research on Stable Mechanism and Flame Morphology of Multi-nozzle Array Combustor with Zoned Combustion

更新时间：2026-10-06

- Research on Stable Mechanism and Flame Morphology of Multi-nozzle Array Combustor with Zoned Combustion
- Chinese Journal of Power Engineering Vol. 46, Issue 3, Pages: 78-87(2026)
- 作者机构：
  
  1. 江苏中科能源动力研究中心,江苏,连云港,222069
  2. 中国科学院工程热物理研究所,北京,100190
  3. 中国科学院大学工程科学学院,北京,100049
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.250652
  CLC：
- Online First：10 March 2026，
  
  Published：10 March 2026
- 稿件说明：
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韦小坡,熊燕,刘志刚,路兴港,王晖. 多喷嘴阵列燃烧器分区燃烧稳定机理与火焰形态研究动力工程学报, 2026, 46(3): 78-87 https://doi.

org/10.19805/j.cnki.jcspe.2026.250652
韦小坡,熊燕,刘志刚,路兴港,王晖. 多喷嘴阵列燃烧器分区燃烧稳定机理与火焰形态研究动力工程学报, 2026, 46(3): 78-87 https://doi. DOI： 10.19805/j.cnki.jcspe.2026.250652.

org/10.19805/j.cnki.jcspe.2026.250652 DOI：

摘要

对多喷嘴阵列燃烧器分区燃烧特性进行了实验和数值模拟研究

以揭示多喷嘴阵列燃烧器燃烧分区稳定机理与火焰形态。通过实验研究得到了不同当量比和不同喷嘴出口速度的火焰形态

通过数值模拟得到了燃烧器冷态(非反应态)和热态(反应态)的流动特性。结果表明:冷态条件下形成了中心大回流区

热态流场与实验结果显示多喷嘴之间相互作用形成小范围回流区

促进了值班区烟气卷吸

增强了整体燃烧稳定性;随着喷嘴出口速度的增加

回流区的范围相对稳定

燃烧器稳定燃烧

速度适应范围宽;随着当量比的增大

中心值班区火焰强度逐渐增强

周围主燃区逐渐被引燃;瞬态OH

化学发光图像显示在不同时间的燃烧形态表现稳定。相关研究结果可以为分区多喷嘴阵列燃烧器设计提供参考。

Abstract

Experimental and numerical simulation studies were conducted on the zoned combustion characteristics of a multi-nozzle array combustor

so as to uncover the stabilization mechanism of combustion zoning and the flame morphology in such combustors. Through experimental investigations

flame morphologies under varying equivalence ratios and nozzle bulk velocities were obtained

while numerical simulations were employed to acquire the non-reacting and reacting flow characteristics of the combustor. Results reveal that

under non-reacting conditions

a large central recirculation zone is formed. Reacting flow field and experimental results show that interactions among the multiple nozzles lead to the formation of small-scale recirculation zones

which promote the entrainment of flue gas in the pilot zone and enhance overall combustion stability. As the nozzle bulk velocity increa

ses

the extent of the recirculation zone remains relatively stable

enabling the combustor to maintain stable combustion over a wide velocity range. With an increase in the equivalence ratio

the flame intensity in the central pilot zone gradually intensifies

and the surrounding main combustion zone is progressively ignited. Transient OH

chemiluminescence images demonstrate stable combustion morphologies at different periods. Relevant research results may serve as references for the design of zoned multi-nozzle array combustors.

关键词

Keywords

references

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