Flow characterization and dilution effects of N2 and CO2 on premixed CH4/air flames in a swirl-stabilized combustor

doi:10.1088/1674-1056/23/3/034704

中国物理B ›› 2014, Vol. 23 ›› Issue (3): 34704-034704.doi: 10.1088/1674-1056/23/3/034704

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Flow characterization and dilution effects of N₂ and CO₂ on premixed CH₄/air flames in a swirl-stabilized combustor

韩乐^a, 蔡国飙^a, 王海兴^a, Renou Bruno^b, Boukhalfa Abdelkrim^b

a School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
b UMR 6614 CORIA, INSA de Rouen, Avenue de l’Université, BP 08, 76801 Saint-Etienne du Rouvray, France

收稿日期:2013-10-21 修回日期:2013-12-26 出版日期:2014-03-15 发布日期:2014-03-15
基金资助:
Project supported by the China Scholarship Council.

Flow characterization and dilution effects of N₂ and CO₂ on premixed CH₄/air flames in a swirl-stabilized combustor

Han Yue (韩乐)^a, Cai Guo-Biao (蔡国飙)^a, Wang Hai-Xing (王海兴)^a, Renou Bruno^b, Boukhalfa Abdelkrim^b

a School of Astronautics, Beijing University of Aeronautics and Astronautics, Beijing 100191, China;
b UMR 6614 CORIA, INSA de Rouen, Avenue de l’Université, BP 08, 76801 Saint-Etienne du Rouvray, France

Received:2013-10-21 Revised:2013-12-26 Online:2014-03-15 Published:2014-03-15
Contact: Han Yue E-mail:hanyue@sa.buaa.edu.cn
Supported by:
Project supported by the China Scholarship Council.

摘要/Abstract

摘要： Numerically-aided experimental studies are conducted on a swirl-stabilized combustor to investigate the dilution effects on flame stability, flame structure, and pollutant emissions of premixed CH₄/air flames. Our goal is to provide a systematic assessment on combustion characteristics in diluted regimes for its application to environmentally-friendly approaches such as biogas combustion and exhaust-gas recirculation technology. Two main diluting species, N₂ and CO₂, are tested at various dilution rates. The results obtained by means of optical diagnostics show that five main flame regimes can be observed for N₂-diluted flames by changing excess air and dilution rate. CO₂-diluted flames follow the same pattern evolution except that all the domains are shifted to lower excess air. Both N₂ and CO₂ dilution affect the lean blow-out (LBO) limits negatively. This behavior can be counter-balanced by reactant preheating which is able to broaden the flammability domain of the diluted flames. Flame reactivity is degraded by increasing dilution rate. Meanwhile, flames are thickened in the presence of both diluting species. NO_x emissions are significantly reduced with dilution and proved to be relevant to flame stability diagrams: slight augmentation in NO_x emission profiles is related to transitional flame states where instability occurs. Although dilution results in increase in CO emissions at certain levels, optimal dilution rates can still be proposed to achieve an ideal compromise.

关键词: dilution effect, premixed combustion, swirl flow, optical diagnostics

Abstract: Numerically-aided experimental studies are conducted on a swirl-stabilized combustor to investigate the dilution effects on flame stability, flame structure, and pollutant emissions of premixed CH₄/air flames. Our goal is to provide a systematic assessment on combustion characteristics in diluted regimes for its application to environmentally-friendly approaches such as biogas combustion and exhaust-gas recirculation technology. Two main diluting species, N₂ and CO₂, are tested at various dilution rates. The results obtained by means of optical diagnostics show that five main flame regimes can be observed for N₂-diluted flames by changing excess air and dilution rate. CO₂-diluted flames follow the same pattern evolution except that all the domains are shifted to lower excess air. Both N₂ and CO₂ dilution affect the lean blow-out (LBO) limits negatively. This behavior can be counter-balanced by reactant preheating which is able to broaden the flammability domain of the diluted flames. Flame reactivity is degraded by increasing dilution rate. Meanwhile, flames are thickened in the presence of both diluting species. NO_x emissions are significantly reduced with dilution and proved to be relevant to flame stability diagrams: slight augmentation in NO_x emission profiles is related to transitional flame states where instability occurs. Although dilution results in increase in CO emissions at certain levels, optimal dilution rates can still be proposed to achieve an ideal compromise.

Key words: dilution effect, premixed combustion, swirl flow, optical diagnostics

中图分类号: (Flames; combustion)

47.70.Pq

47.70.Fw (Chemically reactive flows) 47.50.Ef (Measurements) 47.27.ep (Large-eddy simulations)

韩乐, 蔡国飙, 王海兴, Renou Bruno, Boukhalfa Abdelkrim. Flow characterization and dilution effects of N₂ and CO₂ on premixed CH₄/air flames in a swirl-stabilized combustor[J]. 中国物理B, 2014, 23(3): 34704-034704.

Han Yue (韩乐), Cai Guo-Biao (蔡国飙), Wang Hai-Xing (王海兴), Renou Bruno, Boukhalfa Abdelkrim. Flow characterization and dilution effects of N₂ and CO₂ on premixed CH₄/air flames in a swirl-stabilized combustor[J]. Chin. Phys. B, 2014, 23(3): 34704-034704.

参考文献 37

[1]	Maruta K, Abe K, Hasegawa S, Maruyama S and Sato J 2007 Proc. Combust. Inst. 31 1223
[2]	Maruta K, Muso K, Takeda K and Niioka T 2000 Proc. Combust. Inst. 28 2117
[3]	Ishiguro T, Tsuge S, Furuhata T, Kitigawa K, Aral N, Hasegawa T, Tanaka R and Gupta A K 1998 Proc. Combust. Inst. 27 3205
[4]	Gupta A K, Bolz S and Hasegawa T 1999 J. Energy Resour. Technol. 121 209
[5]	Lille S, Dobski T and Blasiak W 2000 J. Propul. Power 16 595
[6]	Yuan J and Naruse I 1999 Energy Fuels 13 99
[7]	RØrtveit G J, Hustad J E, Li S C and Williams A 2002 Combust. Flame 130 48
[8]	Flamme M 2004 Appl. Therm. Eng. 24 1551
[9]	Galmiche B, Halter F, Foucher F and Dagaut P 2011 Energy Fuels 25 948
[10]	Chigier N A and Beér J M 1964 J. Basic Eng. 86 788
[11]	Davies T W and Beér J M 1971 Proc. Combust. Inst. 13 631
[12]	Beér J M and Chigier N A 1972 Combustion Aerodynamics (London: Elsevier) p. 138
[13]	Syred N and Beér J M 1974 Combust. Flame 23 143
[14]	Gupta A K, Beér J M and Swithenbank J 1977 Combust. Sci. Tech. 17 119
[15]	Erlebacher G, Hussaini M Y, Speziale C G and Zang T A 1992 J. Fluid Mech. 238 155
[16]	Moin P and Kim J 1982 J. Fluid Mech. 118 341
[17]	Wang X W, Cai G B and Jin P 2010 Chin. Phys. B 19 19401
[18]	Dixon-Lewis G 1968 Proc. Roy. Soc. A 307 111
[19]	Smith G P, Golden D M, Frenklach M, Moriarty N W, Eiteneer B, Goldenberg M, Bowman C T, Hanson R K, Song S, Gardiner W C, Lissianski V V and Qin Z 1999 GRI Mech 3.0
[20]	Broda J C, Seo S, Santoro R J, Shirattikar G and Yang V 1998 Proc. Combust. Inst. 27 1849
[21]	Gupta A K, Lilley D G and Syred N 1993 Swirl Flows (Cambridge: Abacus Press) p. 253
[22]	Vanoverberghe K, van Den Bulck E and Tummers M 2004 Flow Turbul. Combust. 73 25
[23]	Schefer R W, Wicksall D M and Agrawal A K 2002 Proc. Combust. Inst. 29 1131
[24]	DeGoey L P H, Plessing T, Hermanns R T E and Peters N 2005 Proc. Combust. Inst. 30 859
[25]	Taupin B 2003 Etude De La Combustion Turbulente A Faible Richesse Haute Temperature Et Haute Pression (PhD thesis) (Rouen: INSA de Rouen) (in French)
[26]	Aldredge R C 1997 Int. Commun. Heat Mass Transfer 24 565
[27]	Han Y, Yu N J, Dai J and Cai G B 2013 Proceedings of the 3rd IEEE International Conference on Computer Science and Automation Engineering, November 1–3, 2013, Guangzhou, China
[28]	Savitzky A and Golay M J E 1964 Anal. Chem. 36 1627
[29]	Press W H, Teukolsky S A, Vetterling W T and Flannery B P 1992 Numerical Recipes in Fortran 77: The art of Scientific Computing (2nd edn.) (Cambridge: Cambridge University Press) p. 496
[30]	Mokhtarian F and Mackworth A 1986 IEEE Trans. Pattern Anal. Mach. Intell. 8 34
[31]	Kostiuk L W, Shepherd I G and Bray K N C 1999 Combust. Flame 118 129
[32]	Ayoola B O, Balachandran R, Frank J H, Mastorakos E and Kaminski C F 2006 Combust. Flame 144 1
[33]	Haq M Z, Sheppard C G W, Woolley R, Greenhalgh D A and Lockett R D 2002 Combust. Flame 131 1
[34]	Bonaldo A and Kelman J B 2009 Combust. Flame 156 750
[35]	Tanahashi M, Murakami S, Choi G M, Fukuchi Y and Miyauchi T 2005 Proc. Combust. Inst. 30 1665
[36]	Lee T W, North G L and Santavicca A D 1993 Combust. Flame 93 445
[37]	Weigand P, Meier W, Duan X R and Aigner M 2006 J. Eng. Gas Turbines Power 129 664

Flow characterization and dilution effects of N₂ and CO₂ on premixed CH₄/air flames in a swirl-stabilized combustor

Flow characterization and dilution effects of N₂ and CO₂ on premixed CH₄/air flames in a swirl-stabilized combustor

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 37

相关文章 11

Metrics

本文评价

推荐阅读 0

[1]	Jian-Xin Nie(聂建新), Run-Zhe Kan(阚润哲), Qing-Jie Jiao(焦清介), Qiu-Shi Wang(王秋实), Xue-Yong Guo(郭学永), and Shi Yan(闫石). Studies on aluminum powder combustion in detonation environment[J]. 中国物理B, 2022, 31(4): 44703-044703.
[2]	Meng Li(李猛), Bo Yan(闫博), Shuang Chen(陈爽), Li Chen(陈力), and Jin-He Mu(母金河). Characterization of premixed swirling methane/air diffusion flame through filtered Rayleigh scattering[J]. 中国物理B, 2022, 31(3): 34702-034702.
[3]	涂晓波, 王林森, 齐新华, 闫博, 母金河, 陈爽. Effects of temperature and pressure on OH laser-induced fluorescence exciting A-X (1,0) transition at high pressures[J]. 中国物理B, 2020, 29(9): 93301-093301.
[4]	闫博, 陈力, 李猛, 陈爽, 龚诚, 杨富荣, 吴运刚, 周江宁, 母金河. Quantitative temperature imaging at elevated pressures and in a confined space with CH₄/air laminar flames by filtered Rayleigh scattering[J]. 中国物理B, 2020, 29(2): 24701-024701.
[5]	焦清介, 王秋实, 聂建新, 裴红波. Structural response of aluminum core-shell particles in detonation environment[J]. 中国物理B, 2019, 28(8): 88201-088201.
[6]	黄金, 韩文虎, 高向宇, 王成. Effects of heat loss and viscosity friction at walls on flame acceleration and deflagration to detonation transition[J]. 中国物理B, 2019, 28(7): 74704-074704.
[7]	刘云峰, 沈欢, 张德良, 姜宗林. Theoretical analysis on deflagration-to-detonation transition[J]. 中国物理B, 2018, 27(8): 84703-084703.
[8]	黄利亚, 夏智勋, 张为华, 黄序, 胡建新. Combustion of a single magnesium particle in water vapor[J]. 中国物理B, 2015, 24(9): 94702-094702.
[9]	金平, 李茂, 蔡国飙. Numerical and experimental study on shear coaxial injectors with hot hydrogen-rich gas/oxygen-rich gas and GH₂/GO₂[J]. Chin. Phys. B, 2013, 22(4): 44701-044701.
[10]	胡建新, 韩超, 夏智勋, 黄利亚, 黄序. Statistical model for combustion of high-metal magnesium-based hydro-reactive fuel[J]. Chin. Phys. B, 2012, 21(12): 124501-124501.
[11]	汪小卫, 蔡国飙, 金平. Scaling of the flow field in a combustion chamber with agas--gas injector[J]. 中国物理B, 2010, 19(1): 19401-019401.