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Frontiers in Energy

ISSN 2095-1701

ISSN 2095-1698(Online)

CN 11-6017/TK

邮发代号 80-972

2019 Impact Factor: 2.657

Frontiers in Energy  2020, Vol. 14 Issue (1): 18-26   https://doi.org/10.1007/s11708-020-0663-6
  本期目录
苯和甲苯在轻成烟预混火焰中的碳烟粒径分布
刘旺, 翟佳琦, 林柏洋, 林赫, 韩东()
上海交通大学机械与动力学院
Soot size distribution in lightly sooting premixed flames of benzene and toluene
Wang LIU, Jiaqi ZHAI, Baiyang LIN, He LIN, Dong HAN()
Key Laboratory for Power Machinery and Engineering, Ministry of Education, Shanghai Jiao Tong University, Shanghai 200240, China
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摘要:

在一个燃烧器稳定滞止火焰平台上研究了苯和甲苯在预混火焰中的碳烟颗粒粒径分布函数的演变过程。通过调节冷气速度,保证不同火焰中的最大火焰温度近似恒定。所有测试火焰中的颗粒粒径分布函数展现为双模态分布,即小尺寸的成核模态和大尺寸的积聚模态。观察发现,在较短的停留时间下,苯火焰中的碳烟成核和颗粒生长要强于甲苯火焰;在较长的停留时间下,两种火焰的颗粒粒径分布函数接近,但甲苯火焰表现出更大的颗粒粒径分布范围和更高的碳烟体积分数。

Abstract

The evolution of particle size distribution function (PSDF) of soot in premixed flames of benzene and toluene was studied on a burner stabilized stagnation (BSS) flame platform. The cold gas velocities were changed to hold the maximum flame temperatures of different flames approximately constant. The PSDFs of all the test flames exhibited a bimodal distribution, i.e., a small-size nucleation mode and a large-size accumulation mode. It was observed that soot nucleation and particle growth in the benzene flame were stronger than those in the toluene flame at short residence times. At longer residence times, the PSDFs of the two flames were similar, and the toluene flame showed a larger particle size distribution range and a higher particle volume fraction than the benzene flame.

Key wordspremixed flame    soot    particle size distribution function    benzene    toluene
收稿日期: 2019-08-10      出版日期: 2020-03-16
通讯作者: 韩东     E-mail: dong_han@sjtu.edu.cn
Corresponding Author(s): Dong HAN   
 引用本文:   
刘旺, 翟佳琦, 林柏洋, 林赫, 韩东. 苯和甲苯在轻成烟预混火焰中的碳烟粒径分布[J]. Frontiers in Energy, 2020, 14(1): 18-26.
Wang LIU, Jiaqi ZHAI, Baiyang LIN, He LIN, Dong HAN. Soot size distribution in lightly sooting premixed flames of benzene and toluene. Front. Energy, 2020, 14(1): 18-26.
 链接本文:  
https://academic.hep.com.cn/fie/CN/10.1007/s11708-020-0663-6
https://academic.hep.com.cn/fie/CN/Y2020/V14/I1/18
Fig.1  
Flame Mole fraction Cold gas velocity v 0/ (cm?s1) a Maximum temperature Tm/Kb Stagnation surface temperature T/Kb φ C/O ratio
Fuel O2 N2
Benzene(B) 0.0757 0.3243 0.6000 4.4 1872±86 406 1.75 0.70
Toluene (T) 0.0651 0.3349 0.6000 3.6 1875±87 393 1.75 0.68
Tab.1  
Fig.2  
Flame Burner-to-stagnation separation Hp/cm Modified residence time t’ (ms, at Hp−0.1cm)
B 0.98 44.7
1.18 59.6
1.37 75.3
1.56 90.5
T 0.92 45.4
1.10 60.4
1.27 75.7
1.42 90.2
Tab.2  
Fig.3  
Fig.4  
Fig.5  
Fig.6  
Fig.7  
Fig.8  
Fig.9  
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