分层比对分层旋流火焰稳定模式及流动结构的影响

王思睿; 刘训臣; 李磊; 韩啸; 张弛; 齐飞

doi:10.7638/kqdlxxb-2020.0033

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分层比对分层旋流火焰稳定模式及流动结构的影响

专栏——湍流燃烧 | 更新时间：2026-05-28

- 分层比对分层旋流火焰稳定模式及流动结构的影响
- Effects of stratification ratio on flame stabilization and flow structure in stratified swirling flame
- 空气动力学学报 2020年38卷第3期页码：619-628
- 作者机构：
  
  1. 上海交通大学,上海,200240
  2. 北京航空航天大学,北京,100191
- 作者简介：
  
  王思睿(1995-), 男, 四川南充人, 硕士研究生, 研究方向:高速激光诊断与燃烧不稳定性.E-mail:wsr9504@sjtu.edu.cn
  齐飞(1968-), 教授, 研究方向:燃烧学.E-mail:fqi@sjtu.edu.cn
- 基金信息：
  
  国家科技重大专项(2017-III-0004-0028), 国家自然基金(9194130001)
- DOI：10.7638/kqdlxxb-2020.0033
  中图分类号： V211.7;V231.2+2
- 纸质出版：2020
- 稿件说明：
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王思睿, 刘训臣, 李磊, 韩啸, 张弛, 齐飞. 分层比对分层旋流火焰稳定模式及流动结构的影响[J]. 空气动力学学报, 2020, 38(3): 619-628.

WANG Sirui, LIU Xunchen, LI Lei, et al. Effects of stratification ratio on flame stabilization and flow structure in stratified swirling flame[J]. 2020, 38(3): 619-628.
王思睿, 刘训臣, 李磊, 韩啸, 张弛, 齐飞. 分层比对分层旋流火焰稳定模式及流动结构的影响[J]. 空气动力学学报, 2020, 38(3): 619-628. DOI： 10.7638/kqdlxxb-2020.0033.

WANG Sirui, LIU Xunchen, LI Lei, et al. Effects of stratification ratio on flame stabilization and flow structure in stratified swirling flame[J]. 2020, 38(3): 619-628. DOI： 10.7638/kqdlxxb-2020.0033.

摘要

应用高速激光诊断系统，对中心分层旋流火焰开展了流场与火焰结构的多参数同步测量，研究了分层比对火焰动力学及瞬态流动结构的影响。通过20 kHz高频平面激光诱导荧光和高频粒子示踪测速技术，研究了不同分层比下的火焰模式和稳定机理，并揭示了流场结构沿轴向的定量演化规律。研究结果表明，提高分层比可以改变分层旋流火焰中火焰面相互作用模式，使主火焰的稳定机理由接触点火变为融合点火机理。同时分层比也会改变火焰释热区的位置，使流场结构以及脱落旋涡的空间分布发生改变。应用旋涡识别方法定量提取了脱落旋涡的位置，获得了内剪切层中脱落旋涡的空间分布和轴向演化规律。

Abstract

High-speed laser diagnostic system was applied to study the structure and dynamics of a centrally staged stratified swirling flame. A high repetition rate burst mode laser with two amplifier chains was employed in this study to provide 20 kHz laser pulses for the joint planar laser induced fluorescence (PLIF) and particle image velocimetry (PIV) measurement to track the flow/heat release rate and flow-flame front dynamics. The stratification ratio (

SR)

plays a central role to flame stabilization and instantaneous flow structure in stratified swirling flame. The effects of the

lead to different flame-flame interaction patterns and locations of heat release regions. Two pilot flame stabili

zation patterns were identified

namely attaching ignition and merged ignition. The

also changes the structures of flow fields and spatial distributions of shedding vortices. The quantitative evolution of the flow field structure along axial direction was studied. A vortex identification method was applied to extract the locations of shedding vortices

obtaining the spatial distribution and axial evolution of shedding vortices in inner shear layer.

关键词

Keywords

references

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