凹腔稳燃超声速燃烧火焰闪回不稳定性的数值研究

肖烨炘; 金台

doi:10.21656/1000-0887.440103

凹腔稳燃超声速燃烧火焰闪回不稳定性的数值研究

doi: 10.21656/1000-0887.440103

肖烨炘,
金台^,

浙江大学航空航天学院，杭州 310027

基金项目:

国家自然科学基金项目 52076194

详细信息

作者简介:
肖烨炘(1999—)，男，博士生(E-mail: xiao_yexin@zju.edu.cn)

通讯作者:
金台(1988—)，男，副教授(通讯作者. E-mail: jintai@zju.edu.cn)

中图分类号: O354.4
计量
- 文章访问数: 489
- HTML全文浏览量: 178
- PDF下载量: 60
- 被引次数: 0
出版历程
- 收稿日期: 2023-04-12
- 修回日期: 2023-07-21
- 刊出日期: 2023-09-01

Numerical Analysis of Flame Flashback and Instability in Cavity-Stabilized Supersonic Combustion

XIAO Yexin,
JIN Tai^,

School of Aeronautics and Astronautics, Zhejiang University, Hangzhou 310027, P.R.China

摘要

摘要: 针对等直截面超燃冲压发动机燃烧室中火焰闪回低频燃烧振荡现象，采用延迟分离涡模拟(DDES)的混合RANS/LES方法结合PaSR湍流燃烧模型进行了三维模拟研究.计算得到了完整的燃烧振荡周期，与实验中的低频燃烧振荡现象较为一致.低频燃烧振荡周期可分为凹腔火焰稳定、火焰回传、火焰吹熄3个阶段.通过分析低频燃烧振荡周期中不同阶段的燃烧流动状态，给出了可能的低频燃烧振荡的形成机制.研究结果表明，在整个低频燃烧振荡周期中燃烧室内没有发生热壅塞，燃烧室提供的背压和燃烧释热是燃烧室内形成低频燃烧振荡的关键.
- 火焰闪回 /
- 超声速低频燃烧振荡 /
- 燃烧流动 /
- 热壅塞
Abstract: Aimed at the phenomenon of flame flashback and low-frequency combustion oscillation in the scramjet combustor with equal straight cross sections, 3D simulations were conducted, with the hybrid RANS/LES method (delayed detached-eddy simulation, DDES) for turbulence modeling and the partially stirred reactor (PaSR) for turbulence-reaction interactions. The obtained entire combustion oscillation period is consistent with the low-frequency combustion oscillation phenomenon observed in the experiment. The low-frequency combustion oscillation period can be divided into 3 stages: the cavity-holding flame, the flame flashback, and the flame blowout. By analysis of the reacting flow field in different stages of the low-frequency combustion oscillation cycle, the possible formation mechanism of low-frequency combustion oscillations was summarized. The results show that, there is no choking in the combustion chamber during the whole low-frequency combustion oscillation period. The pressure rise induced by shock interaction and the heat released by combustion are the key factors for the formation of low-frequency combustion oscillations in the combustion chamber.
- flame flashback /
- low-frequency combustion oscillation /
- combustion flow field /
- choking

HTML全文

图 1 模型燃烧室结构示意图(单位: mm)

Figure 1. Schematic of the model combustion chamber(unit: mm)

下载: 全尺寸图片幻灯片

图 2 冷态流场上壁面静压分布

Figure 2. Static pressure distribution on the upper wall surface in the cold flow field

下载: 全尺寸图片幻灯片

图 3 中间截面温度云图随时间变化(Δt=0.2 ms)

注为了解释图中的颜色，读者可以参考本文的电子网页版本，后同.

Figure 3. Contours of temperature in the mid plane at various moments (Δt=0.2 ms)

下载: 全尺寸图片幻灯片

图 4 三维火焰面结构，温度着色的当量混合分数等值面

Figure 4. Iso-surfaces of the stoichiometric mixture colored by temperature

下载: 全尺寸图片幻灯片

图 5 燃烧室内密度纹影、Ma数、压力、温度云图(t=t₀, t₀+0.4 ms)

Figure 5. Contours of $|\nabla \rho| $, Ma, pressure, temperature in the combustion chamber (t=t₀, t₀+0.4 ms)

下载: 全尺寸图片幻灯片

图 6 燃烧室内密度纹影、Ma数、压力、温度云图(t=t₀+1.6 ms, t₀+2.0 ms)

Figure 6. Contours of $|\nabla \rho| $, Ma, pressure, temperature in the combustion chamber (t=t₀+1.6 ms, t₀+2.0 ms)

下载: 全尺寸图片幻灯片

图 7 燃烧室内火焰索引因子对比图

Figure 7. Comparison diagram of flame index in the combustion chamber

下载: 全尺寸图片幻灯片

图 8 燃烧室内测点示意图

Figure 8. Schematic diagram of the probe in the combustion chamber

下载: 全尺寸图片幻灯片

图 9 测点压力波动测量结果

Figure 9. Probe pressure fluctuation measurement results

下载: 全尺寸图片幻灯片

图 10 燃烧室内激波示意图

Figure 10. Schematic diagram of the shock wave in the combustion chamber

下载: 全尺寸图片幻灯片

表 1 隔离段入口及燃料喷口参数

Table 1. Isolator inlet and jet parameters

	pressure P/kPa	velocity v/(m/s)	temperature T/K	Y_O₂	Y_H₂0	Y_CO₂	Y_N₂	Y_C₂H₄
inlet	89.12	1 323	719.3	0.233 8	0.101 6	0.062 2	0.602 4	0
jet	847.28	315	265.2	0	0	0	0	1

下载: 导出CSV

参考文献(28)

[1]	王强, 徐涛, 姚永涛. 高超声速流动与换热数值仿真研究[J]. 应用数学和力学, 2022, 43(10): 1105-1112. doi: 10.21656/1000-0887.420346 WANG Qiang, XU Tao, YAO Yongtao. Numerical study on hypersonic flow and aerodynamic heating[J]. Applied Mathematics and Mechanics, 2022, 43(10): 1105-1112. (in Chinese) doi: 10.21656/1000-0887.420346
[2]	CHOUBEY G, DEUARAJAN Y, HUANG W, et al. Recent advances in cavity-based scramjet engine: a brief review[J]. International Journal of Hydrogen Energy, 2019, 44(26): 13895-13909. doi: 10.1016/j.ijhydene.2019.04.003
[3]	CHOUBEY G, YUVARAJAN D, HUANG W, et al. Hydrogen fuel in scramjet engines: a brief review[J]. International Journal of Hydrogen Energy, 2020, 45(33): 16799-16815. doi: 10.1016/j.ijhydene.2020.04.086
[4]	SZIROCZAK D, SMITH H. A review of design issues specific to hypersonic flight vehicles[J]. Progress in Aerospace Sciences, 2016, 84: 1-28. doi: 10.1016/j.paerosci.2016.04.001
[5]	DING Y, YUE X, CHEN G, et al. Review of control and guidance technology on hypersonic vehicle[J]. Chinese Journal of Aeronautics, 2022, 35(7): 1-18. doi: 10.1016/j.cja.2021.10.037
[6]	LIU Q, BACCARELLA D, LEE T. Review of combustion stabilization for hypersonic airbreathing propulsion[J]. Progress in Aerospace Sciences, 2020, 119: 100636. doi: 10.1016/j.paerosci.2020.100636
[7]	BEN-YAKAR A, HANSON R K. Cavity flame-holders for ignition and flame stabilization in scramjets: an overview[J]. Journal of Propulsion and Power, 2001, 17(4): 869-877. doi: 10.2514/2.5818
[8]	WANG Z, WANG H, SUN M. Review of cavity-stabilized combustion for scramjet applications[J]. Proceedings of the Institution of Mechanical Engineers (Part G): Journal of Aerospace Engineering, 2014, 228(14): 2718-2735. doi: 10.1177/0954410014521172
[9]	OUYANG H, LIU W, SUN M. The large-amplitude combustion oscillation in a single-side expansion scramjet combustor[J]. Acta Astronautica, 2015, 117: 90-98. doi: 10.1016/j.actaastro.2015.07.016
[10]	SELEZNEV R K, SURZHIKOV S T, SHANG J S. A review of the scramjet experimental data base[J]. Progress in Aerospace Sciences, 2019, 106: 43-70. doi: 10.1016/j.paerosci.2019.02.001
[11]	WANG H, WANG Z, SUN M. Experimental study of oscillations in a scramjet combustor with cavity flameholders[J]. Experimental Thermal and Fluid Science, 2013, 45: 259-263. doi: 10.1016/j.expthermflusci.2012.10.013
[12]	ZHAO G Y, SUN M B, WU J S, et al. Investigation of flame flashback phenomenon in a supersonic crossflow with ethylene injection upstream of cavity flameholder[J]. Aerospace Science and Technology, 2019, 87: 190-206. doi: 10.1016/j.ast.2019.02.018
[13]	JEONG S M, LEE J H, CHOI J Y. Numerical investigation of low-frequency instability and frequency shifting in a scramjet combustor[J]. Proceedings of the Combustion Institute, 2022, 39(3): 3107-3116.
[14]	NAKAYA S, YAMANA H, TSUE M. Experimental investigation of ethylene/air combustion instability in a model scramjet combustor using image-based methods[J]. Proceedings of the Combustion Institute, 2021, 38(3): 3869-3680. doi: 10.1016/j.proci.2020.07.129
[15]	LAURENCE S, KARL S, SCHRAMM J M, et al. Transient fluid-combustion phenomena in a model scramjet[J]. Journal of Fluid Mechanics, 2013, 722: 85-120. doi: 10.1017/jfm.2013.56
[16]	MA F, LI J, YANG V, et al. Thermoacoustic flow instability in a scramjet combustor[C]//Proceedings of the 41st AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit. 2012.
[17]	IM S K, DO H. Unstart phenomena induced by flow choking in scramjet inlet-isolators[J]. Progress in Aerospace Sciences, 2018, 97: 1-21. doi: 10.1016/j.paerosci.2017.12.001
[18]	DU G M, YE T, LE J L, et al. Experimental investigation of effects of air throttling on combustion characteristics in a kerosene-fueled scramjet at Ma7[J]. Acta Astronautica, 2023, 203: 447-453. doi: 10.1016/j.actaastro.2022.12.025
[19]	李文栋, 张文普. 预混燃烧边界层回火的数理模型及研究进展[J]. 应用数学和力学, 2023, 44(1): 36-51. doi: 10.21656/1000-0887.430012 LI Wendong, ZHANG Wenpu. The mathematical model and research progress of the boundary layer flashback in premixed combustion[J]. Applied Mathematics and Mechanics, 2023, 44(1): 36-51. (in Chinese) doi: 10.21656/1000-0887.430012
[20]	ZHAO G Y, SUN M B, SONG X L, et al. Experimental investigations of cavity parameters leading to combustion oscillation in a supersonic crossflow[J]. Acta Astronautica, 2019, 155: 255-263. doi: 10.1016/j.actaastro.2018.12.011
[21]	FROST M A, GANGURDE D Y, PAULL A, et al. Boundary-layer separation due to combustion-induced pressure rise in a supersonic flow[J]. AIAA Journal, 2009, 47(4): 1050-1053. doi: 10.2514/1.40868
[22]	SPALART P, ALLMARAS S. A one-equation turbulence model for aerodynamic flows[C]//Proceedings of the 30th Aerospace Sciences Meeting and Exhibit. 1992.
[23]	SPALART P R, DECK S, SHUR M L, et al. A new version of detached-eddy simulation, resistant to ambiguous grid densities[J]. Theoretical and Computational Fluid Dynamics, 2006, 20: 181-195. doi: 10.1007/s00162-006-0015-0
[24]	SPALART P. Comments on the feasibility of LES for wings, and on a hybrid RANS/LES approach[C]//Advances in DNS/LES: Proceedings of the First AFOSR International Conference on DNS/LES. Ruston, Louisiana, USA, 1997.
[25]	GOLOVITCHEV V I, NORDIN N, JARNICKI R, et al. 3-D diesel spray simulations using a new detailed chemistry turbulent combustion model[J]. Journal of Fuels and Lubricants, 2000, 109: 1391-1405.
[26]	KORNEV N, SHCHUKIN E, TARANOV E, et al. Development and implementation of inflow generator for LES and DNS applications in OpenFOAM[C]//Proceedings of the Open Source CFD International Conference. 2009.
[27]	SINGH D, JACHIMOWSKI C J. Quasiglobal reaction model for ethylene combustion[J]. AIAA Journal, 1994, 32(1): 213-216. doi: 10.2514/3.11972
[28]	赵国焱. 超声速气流中火焰闪回诱发与火焰传播机制研究[D]. 博士学位论文. 长沙: 国防科技大学, 2019. ZHAO Guoyan. On the excitation of flame flashback and flame propagation mechanism in supersonic flow[D]. PhD Thesis. Changsha: National University of Defense Technology, 2019. (in Chinese)