预混旋流多喷嘴火焰激光可视化实验研究

doi:10.13675/j.cnki. tjjs. 180543

推进技术 ›› 2019, Vol. 40 ›› Issue (8): 1887-1894.DOI: 10.13675/j.cnki. tjjs. 180543

预混旋流多喷嘴火焰激光可视化实验研究

1.中国航空发动机研究院基础与应用研究中心，北京 101304;2.上海交通大学机械与动力工程学院动力机械与工程教育部重点实验室，上海 200240

发布日期:2021-08-15
基金资助:
国家自然科学基金 51206109国家自然科学基金（51206109）。

Laser Diagnostic on Structure of Premixed SwirlingMulti-Nozzle Flame

1.Basic & Applied Research Center,Aero Engine Academy of China,Beijing 101304,China;2.Key Laboratory for Power Machinery and Engineering of Ministry of Education,School of Mechanical Engineering，Shanghai Jiaotong University，Shanghai 200240，China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究预混旋流多喷嘴火焰结构及当量比对多喷嘴火焰结构的影响，针对当量比0.51～0.8的甲烷/空气预混旋流多喷嘴火焰开展了平面激光诱导荧光测量研究。通过实验，获得了不同当量比下预混旋流多喷嘴火焰时均火焰形态和瞬态火焰结构分布特点。实验结果表明，相邻火焰相互冲刷，在相互作用区内强化了燃烧化学反应。相邻火焰之间的相互作用随着当量比的减小逐渐减弱，当量比小于0.53时，中心火焰熄灭，相邻火焰相互作用消失。多喷嘴外侧火焰推举高度小于中心火焰，稳定范围比中心火焰宽。当量比大于0.6时火焰推举高度随当量比的变化不明显，当量比小于0.6后火焰推举高度随着当量比的减小显著增加。随着当量比的降低，湍流脉动对火焰的褶皱扭曲作用逐渐增强，湍流火焰传播速度与层流火焰传播速度之比逐渐增大。

关键词: 多喷嘴火焰;预混燃烧;平面激光诱导荧光测量;火焰结构;火焰相互作用;当量比

Abstract: In order to characterize the structure of methane/air premixed swirling multi-nozzle flames and reveal the effect of equivalence ratio on the multi-nozzle flame structure, planar laser induced fluorescence was employed at different equivalence ratios ranging from 0.51 to 0.8. The mean and instantaneous structures of premixed swirling multi-nozzle flames at different equivalence ratios were obtained during the experiment. Experimental results show neighboring swirling flames impinge with each other, generating a highly turbulent interacting zone where combustion intensity is enhanced. Flame interaction between neighboring nozzles gradually decreases as the equivalence ratio decreases. The center flame is extinguished when equivalence ratio is less than 0.53, indicating disappearance of the neighboring flame interaction. Flame liftoff height for outer nozzle is lower and the stability window is wider than that for center flame. The flame liftoff height doesn’t have any significant variations when equivalence ratio is larger than 0.6. However, the flame liftoff height increases dramatically once equivalence ratio is less than 0.6. The flame wrinkling due to flow turbulence is enhanced as equivalence ratio is decreased, which causes the ratio of turbulent flame speed to laminar flame speed being increased.

Key words: Multi-Nozzle flame;Premixed combustion;Planar laser-induced fluorescence;Flame structure;Flame interaction;Equivalence ratio

. 预混旋流多喷嘴火焰激光可视化实验研究[J]. 推进技术, 2019, 40(8): 1887-1894.

参考文献

[1] Tacina R R. Combustor Technology for Future Aircraft[R]. AIAA90-2400.
[2] Tacina R, Wey C， Laing P， et al. Sector Tests of a Low NO_x， Lean-Direct-Injection， Multipoint Integrated Module Combustor Concept[R]. ASME GT2002-30089.
[3] Tacina R， Wey C， Laing P， et al. A Low NOx Lean-Direct Injection， Multipoint Integrated Module Combustor Concept for Advanced Aircraft Gas Turbines[R]. NASA-TM-2002-211347.
[4] Brandt D E， Wesoriek R R. GE Gas Turbine Design Philosophy[R]. Schenectady: GE Industrial and Power System， GER-3434D， 1994.
[5] Szedlmayer M T， Quay B D， Samarasinghe J， et al. Forced Flame Response of a Lean Premixed Multi-Nozzle Can Combustor[R]. ASME GT2011-46080.
[6] 宋权斌，房爱兵，徐纲，等. 不同喷嘴结构合成气燃烧室动态特性的实验研究[J]. 工程热物理学报， 2011， 32(6): 1053-1057.
[7] Fanaca D， Alemela P， Hirsch C， et al. Comparison of the Flow Field of a Swirl Stabilized Premixed Burner in an Annular and a Single Burner Combustion Chamber[J]. Journal of Engineering for Gas Turbines and Power， 2010， 132(7).
[8] Cai J， S -M Jeng， Tacina R. Mult-Swirler Aerodynamics: Experimental Measurements[R]. AIAA2001-3574.
[9] Cai J， Jeng S M， Tacina R. Multi-Swirler Aerodynamics: Comparison of Different Configurations[R]. ASME GT2002-30464.
[10] Worth N A， Dawson J R. Cinematographic OH-PLIF Measurements of Two Interacting Turbulent Premixed Flames with and Without Acoustic Forcing[J]. Combustion and Flame， 2012， 159(3): 1109-1126.
[11] Worth N A， Dawson J R. Response of Two Acoustically Excited Turbulent Premixed Flames to an Imposed Phase Lag[R]. AIAA2012-0502.
[12] Samarasinghe J， Peluso S， Szedlmayer M， et al. Three-Dimensional Chemiluminescence Imaging of Unforced and Forced Swirl-Stabilized Flames in a Lean Premixed Multi-Nozzle Can Combustor[J]. Journal of Engineering for Gas Turbines and Power， 2013， 135(10).
[13] Lee B J ， Kim J S ， Lee S. Enhancement of Blowout Limit by the Interaction of Multiple Nonpremixed Jet Flames[J]. Combustion Science and Technology， 2004， 176(4): 481-497.
[14] Villalva R， Dolan B， Munday D， et al. Emissions and Operability of a Multi-Point Low NO_x Staged Combustor at Intermediate Pressures[R]. ASME GT2013-95135.
[15] Emadi M， Karkow D， Salameh T， et al. Flame Structure Changes Resulting from Hydrogen-Enrichment and Pressurization for Low-Swirl Premixed Methane-Air Flames[J]. International Journal of Hydrogen Energy， 2012， 37(13): 10397-10404.
[16] Boxx I， Arndt C M， Carter C D， et al. High-Speed Laser Diagnostics for the Study of Flame Dynamics in a Lean Premixed Gas Turbine Model Combustor[J]. Experiments in Fluids， 2012， 52(3): 555-567.
[17] Boxx I， St?hr M， Carter C， et al. Temporally Resolved Planar Measurements of Transient Phenomena in a Partially Premixed Swirl Flame in a Gas Turbine Model Combustor[J]. Combustion and Flame， 2010， 157(8):1510-1525.
[18] Cheng R K， Littlejohn D. Effects of Combustor Geometry on the Flowfields and Flame Properties of a Low-Swirl Injector[R]. ASME GT2008-50504.
[19] Shepherd I G， Cheng R K. The Burning Rate of Premixed Flames in Moderate and Intense Turbulence[J]. Combustion and Flame， 2001， 127(3): 2066-2075.
[20] Jones B， Lee J G， Quay B D， et al. Flame Response Mechanisms Due to Velocity Perturbations in a Lean Premixed Gas Turbine Combustor[R]. ASME GT2010-22380.
[21] Liu W J， Ge B， Tian Y S， et al. Experimental Investigations and Large Eddy Simulation of Low-Swirl Combustion in a Lean Premixed Multi-Nozzle Combustor[J]. Experiments in Fluids， 2015， 56(34): 1-12.
[22] Cheng R K. Turbulent Combustion Properties of Premixed Syngas[M]. New York: Taylor & Francis Group， 2010.
[23] Daniele S， Jansohn P， Boulouchos K. Flame Front Characteristic and Turbulent Flame Speed of Lean Premixed Syngas Combustion at Gas Turbine Relevant Conditions[R]. ASME GT2009-59477.
[24] Peters N. Turbulent Combustion[M]. Cambridge: Cambridge University Press， 2002.

预混旋流多喷嘴火焰激光可视化实验研究

Laser Diagnostic on Structure of Premixed SwirlingMulti-Nozzle Flame

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价