旋进涡核与火焰面耦合作用对燃烧稳定性影响的数值研究

王振林; 李祥晟; 庄士超; 杨诏

doi:10.7652/xjtuxb201807009

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旋进涡核与火焰面耦合作用对燃烧稳定性影响的数值研究

更新时间：2025-07-09

- 旋进涡核与火焰面耦合作用对燃烧稳定性影响的数值研究
- Numerical Study on the Influence of Precessing Vortex Core Coupling with Flame Surface on Combustion Stability
- 西安交通大学学报 2018年52卷第7期页码：60-67
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201807009
  中图分类号： TK26
- 网络首发：2018-07-10，
  
  纸质出版：2018
- 稿件说明：
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王振林, 李祥晟, 庄士超, 等. 旋进涡核与火焰面耦合作用对燃烧稳定性影响的数值研究[J]. 西安交通大学学报, 2018,52(7):60-67.

Numerical Study on the Influence of Precessing Vortex Core Coupling with Flame Surface on Combustion Stability[J]. 2018, 52(7): 60-67.
王振林, 李祥晟, 庄士超, 等. 旋进涡核与火焰面耦合作用对燃烧稳定性影响的数值研究[J]. 西安交通大学学报, 2018,52(7):60-67. DOI： 10.7652/xjtuxb201807009.

Numerical Study on the Influence of Precessing Vortex Core Coupling with Flame Surface on Combustion Stability[J]. 2018, 52(7): 60-67. DOI： 10.7652/xjtuxb201807009.

摘要

对PRECCINSTA模型燃烧室中的动态燃烧过程进行了大涡模拟数值研究。在固定当量比为0.7时

对热功率分别为10、35 kW的两种燃烧工况的燃烧特性进行了非定常数值模拟

模拟结果与实验数据吻合良好。研究表明

两种工况的冷态流场均在射流与内回流区之间的内剪切层中存在一个螺旋形的旋进涡核(PVC)

而热态时却展现出了不同的流场特性和火焰形式。当热功率为10 kW时

火焰呈现V型且燃烧稳定

流场内剪切层中的PVC消失

仅存在对称布置的旋涡; 当热功率为35 kW时

火焰呈现M型且发生了热声耦合不稳定燃烧现象

此时流场内剪切层中的PVC依然存在。通过对不稳定工况下瞬态流场、温度场及放热特性的分析

发现PVC引起了规律性的火焰卷曲

对低温未燃和高温已燃气体的混合起到了加速作用

从而导致了局部区域内混合物的引燃。这些过程与PVC引起的周期性的涡运动直接相关

可以证实PVC对燃烧及放热的影响是35 kW工况下发生不稳定燃烧的重要因素。

Abstract

Large eddy simulation(LES)was used to investigate the combustion dynamics on a lab scaled combustion chamber

which is well known as PRECCINSTA combustor. Transient three-dimensional numerical simulations at the two different thermal powers(10 kW and 35 kW)with a fixed equivalence ratio of 0.7 were carried out. The predicted results were compared with the experimental data and good agreements were showed. A precessing vortex core(PVC)in the inner shear layer(ISL)

which existed between the swirling jet and the inner recirculate zone(IRZ)

could be seen in the cold flow field of both conditions. However

two different flow and combustion dynamics appeared when combustion occurred. At thermal power of 10 kW

there was a V-shaped flame with stable combustion

PVC disappeared

and the vortices arrangement was symmetrical in the ISL. However

there was a M-shaped flame with a PVC in the ISL and thermoacoustic coupling combustion instability occurred at thermal power of 35 kW. Through the analysis of the characteristics of the flow

temperature and heat release field

it is found that the flame surface was wrinkled periodically by the PVC

which enhanced the mixture of cold fresh gas and hot burned gas

and then the mixture was ignited in a local area. These effects were directly related to the periodic vortex motion induced by PVC. It is confirmed that the influence of PVC on flame surface and heat release is an important factor triggering the combustion instability at thermal power of 35 kW.

关键词

Keywords

references

SYRED N. A review of oscillation mechanisms and the role of the precessing vortex core(PVC)in swirl combustion systems [J]. Energy Combust, 2006, 32(2): 93-161.

STÖHR M, ARNDT C, MEIER W, et al. Transient effects of fuel-air mixing in a partially-premixed turbulent swirl flame [J]. Proceedings of the Combustion Institute, 2015, 35(3): 3327-3335.

STÖHR M, SADANANDAN R, MEIER W. Phase-resolved characterization of vortex-flame interaction in a turbulent swirl flame [J]. Exp Fluids, 2011, 51(4): 1153-1167.

STÖHR M, BOXX I, CARTER C D, et al. Experimental study of vortex-flame interaction in a gas turbine model combustor [J]. Combustion and Flame, 2012, 159(8): 2636-2649.

MOECK J P, BOURGOUIN J F, DUROX D, et al. Nonlinear interaction between a precessing vortex core and acoustic oscillations in a turbulent swirling flame [J]. Combustion and Flame, 2012, 159(8): 2650-2668.

STÖHR M, BOXX I, CARTER C, et al. Dynamics of lean blowout of a swirl-stabilized flame in a gas turbine model combustor [J]. Proceedings of the Combustion Institute, 2011, 33(2): 2953-2960.

CAUX-BRISEBOIS V, STEINBERG A M, ARNDT C M, et al. Thermo-acoustic velocity coupling in a swirl stabilized gas turbine model combustor [J]. Combustion and Flame, 2014, 161(12): 3166-3180.

OBERLEITHNER K, STÖHR M, IM S H, et al. Formation and flame-induced suppression of the precessing vortex core in a swirl combustor: experiments and linear stability analysis [J]. Combustion and Flame, 2015, 162(1): 86-99.

MANOHARAN K, HANSFORD S, CONNOR J O, et al. Instability mechanism in a swirl flow combustor: precession of vortex core and influence of density gradient [C]∥ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. New York, USA: ASME, 2015: V04AT04A073.

GORBUNOVA A, KLIMOV A, MOLEVICH N, et al. Precessing vortex core in a swirling wake with heat release [J]. International Journal of Heat and Fluid Flow, 2016, 59: 1510-1525.

樊艳娜, 毕明树, 周一卉, 等. 旋流作用下突扩燃烧室内冷态流场的PIV分析 [J]. 实验流体力学, 2015, 29(6): 21-27.

FAN Yanna, BI Mingshu, ZHOU Yihui, et al. Cold-flow analysis on swirl-stabilized dump combustor by PIV [J]. Journal of Experiments in Fluid Mechanics, 2015, 29(6): 21-27.

张济民, 韩超, 张宏达, 等. 钝体绕流有旋流中回流区与进动涡核的大涡模拟 [J]. 推进技术, 2014, 35(8): 1070-1079.

ZHANG Jimin, HAN Chao, ZHANG Hongda, et al. Large eddy simulation of recirculation and precessing vortex core in swirling flow around a bluff-body [J]. Journal of Propulsion Technology, 2014, 35(8): 1070-1079.

张宏达, 张济民, 韩超, 等. 大涡模拟研究钝体有旋流流场的拟序结构 [J]. 航空学报, 2014, 35(7): 1854-1864.

ZHANG Hongda, ZHANG Jimin, HAN Chao, et al. Coherent structures of flow fields in swirling flow around a bluff-body using large eddy simulation [J]. Acta Aeronautica et Astronautica Sinica, 2014, 35(7): 1854-1864.

FRANZELLI B, RIBER E, GICQUEL L Y M, et al. Large eddy simulation of combustion instabilities in a lean partially premixed swirled flame [J]. Combustion and Flame, 2012, 159(2): 621-637.

WANG Zhenlin, LI Xiangsheng, FENG Zhenping. Interaction between precessing vortex core and thermoacoustic coupling in a lab-scale lean premixed gas turbine combustor: numerical simulation studies [C]∥ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. New York, USA: ASME, 2017: V04AT04A014.

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