甲烷及掺氢燃气吹熄极限的大涡模拟研究

doi:10.16183/j.cnki.jsjtu.2020.329

上海交通大学学报 ›› 2022, Vol. 56 ›› Issue (5): 635-647.doi: 10.16183/j.cnki.jsjtu.2020.329

甲烷及掺氢燃气吹熄极限的大涡模拟研究

周希瑞¹, 王平¹(), 曾海翔¹, 张洋¹, PRASHANT Shrotriya², ANTONIO Ferrante¹^,³, 祁浩天¹

1.江苏大学能源研究院, 江苏镇江 212013
2.江苏大学能源与动力工程学院,江苏镇江 212013
3.燃烧与环境中心, 巴里 70023, 意大利

收稿日期:2020-10-15 出版日期:2022-05-28 发布日期:2022-06-07
通讯作者: 王平 E-mail:pingwang@ujs.edu.cn
作者简介:周希瑞(1996-),男,江苏省宿迁市人,硕士生,研究方向为湍流燃烧的大涡模拟.
基金资助:
国家自然科学基金项目(91741117);国家自然科学基金项目(51576092)

Large Eddy Simulation on Blow-Off Limit of Methane and Hydrogen-Mixed Gas

ZHOU Xirui¹, WANG Ping¹(), ZENG Haixiang¹, ZHANG Yang¹, PRASHANT Shrotriya², ANTONIO Ferrante¹^,³, QI Haotian¹

1. Institute for Energy Research, Jiangsu University, Zhenjiang 212013, Jiangsu, China
2. School of Energy and Power Engineering, Jiangsu University, Zhenjiang 212013,Jiangsu, China
3. Centro Combustione Ambiente, Bali 70023, Italy

Received:2020-10-15 Online:2022-05-28 Published:2022-06-07
Contact: WANG Ping E-mail:pingwang@ujs.edu.cn

摘要/Abstract

摘要：

利用大涡模拟法计算研究甲烷和掺氢燃气在悉尼非均匀入流射流燃烧器上的吹熄极限.利用GRI 3.0详细反应机理和28步、19步简化反应机理对比计算不同掺氢燃气状态下的层流预混火焰,证明了19步简化反应机理具有良好性能.利用动态增厚火焰燃烧模型结合19步反应机理,计算研究以掺氢燃气(体积比V(H₂):V(CH₄):V(CO):V(CO₂)=0.2:0.2:0.27:0.33)为燃料的悉尼部分预混中心射流火焰.计算得到在FA和FJ布局下,掺氢燃气的火焰吹熄极限速度分别为90 m/s和109 m/s,甲烷的火焰吹熄极限速度分别为74 m/s和128 m/s,分析发现吹熄极限的差异与不同布局下燃气与空气混合不均匀程度相关.研究表明,优化燃气与空气的进气布局和掺混过程可以提升燃烧稳定性.

关键词: 部分预混火焰, 吹熄极限, 掺氢燃气, 增厚火焰模型, 大涡模拟

Abstract:

The blow-off limits of methane and hydrogen-mixed gas on the Sydney inhomogeneous inflow jet burner were calculated and studied by large eddy simulation. The GRI 3.0 detailed reaction mechanism, 28-step and 19-step methane simplified reaction mechanisms were used to calculate the laminar premixed flames under the condition of different hydrogen-mixed fuel gases, which demonstrates the good performance of the 19-step simplified mechanism. A dynamic thickening flame combustion model was combined with the 19-step reaction mechanism to compute the Sydney partially premixed jet flame burner with a hydrogen-mixed gas (the volume ratio of V(H₂):V(CH₄):V(CO):V(CO₂) = 0.2:0.2:0.27:0.33). The blow-off limits in FA and FJ layouts of hydrogen-mixed gas are 90 m/s and 109 m/s, while for pure methane flames are 74 m/s and 128 m/s, respectively. The difference of blow-off limits between the two fuels is related to the inhomogeneity of fuel and air mixing in different layouts. This study shows that the combustion stability can be improved by optimizing the inlet layout and mixing process of fuel gas and air.

Key words: partially premixed flame, blow-off limit, hydrogen-mixed gas, thickened flame model, large eddy simulation

中图分类号:

TK16

周希瑞, 王平, 曾海翔, 张洋, PRASHANT Shrotriya, ANTONIO Ferrante, 祁浩天. 甲烷及掺氢燃气吹熄极限的大涡模拟研究[J]. 上海交通大学学报, 2022, 56(5): 635-647.

ZHOU Xirui, WANG Ping, ZENG Haixiang, ZHANG Yang, PRASHANT Shrotriya, ANTONIO Ferrante, QI Haotian. Large Eddy Simulation on Blow-Off Limit of Methane and Hydrogen-Mixed Gas[J]. Journal of Shanghai Jiao Tong University, 2022, 56(5): 635-647.

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参考文献 18

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机理	组分信息	反应步数	简化来源
Toshimitsu^[16]	H₂、O₂、H、O、OH、H₂O、CH₃、CH₄、CO、CO₂、HCO、CH₂O、CH₃O、C₂H₂、N₂	19	GRI 1.2
Lytras-II^[17]	H₂、H、O、O₂、OH、H₂O、CH₂、CH₃、CH₄、CO、CO₂、C₂H₆、C₂H₂、N₂	28	GRI 1.2

CH₄				HMG
火焰布局	v_J/(m·s^-1)	熄灭	编号	火焰布局	v_J/(m·s^-1)	熄灭	编号
FA	64	否	-	FA	78	否	-
	70	否	-		84	否	-
	74	是	U74-CH₄		90	是	U90-HMG
FJ	114	否	-	FJ	96	否	-
	120	否	-		103	否	-
	128	是	U128-CH₄		109	是	U109-HMG

甲烷及掺氢燃气吹熄极限的大涡模拟研究

Large Eddy Simulation on Blow-Off Limit of Methane and Hydrogen-Mixed Gas

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