高密度烃层流火焰传播速度试验研究

推进技术 ›› 2015, Vol. 36 ›› Issue (8): 1193-1198.

高密度烃层流火焰传播速度试验研究

李鹏飞¹,费立群²,金仁瀚¹,朱冬清¹,刘勇¹

南京航空航天大学能源与动力学院/江苏省航空动力系统重点实验室，江苏南京 210016,中国航天科工集团三十一研究所，北京 100074,南京航空航天大学能源与动力学院/江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院/江苏省航空动力系统重点实验室，江苏南京 210016,南京航空航天大学能源与动力学院/江苏省航空动力系统重点实验室，江苏南京 210016

发布日期:2021-08-15
作者简介:李鹏飞(1990—)，男，博士生，研究领域为燃烧。
基金资助:
高超声速冲压发动机技术重点实验室开放基金(2012)。

Experimental Research of Laminar Flame Speed of

College of Energy and Power/Jiangsu Province Key of Aerospace Power System，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,The 31st Research Institute of CASIC，Beijing 100074，China,College of Energy and Power/Jiangsu Province Key of Aerospace Power System，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China,College of Energy and Power/Jiangsu Province Key of Aerospace Power System，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China and College of Energy and Power/Jiangsu Province Key of Aerospace Power System，Nanjing University of Aeronautics and Astronautics，Nanjing 210016，China

Published:2021-08-15

摘要/Abstract

摘要： 为了研究液态燃料的预混燃烧特性，利用本生灯方法与数字图像处理技术相结合的方法对高密度烃的层流火焰传播速度和贫油点火、熄火极限进行了试验测量。研究表明:高密度烃的层流火焰传播速度在恰当比为1.1附近取得最大值；贫油燃烧阶段的层流火焰传播速度随当量比的变化幅度比富油燃烧阶段小；当量比相同时，燃油流量的改变对层流火焰传播速度的影响不大；层流火焰传播速度随混合气体温度的增加而增加；随混合气体温度的增加，层流火焰传播速度随当量比的变化幅度增大；燃油流量在小于35ml/h区域内，贫油点火极限、熄火极限的当量比存在一定的波动，且随混合气体温度的增加而减小，但减小幅度不大。

关键词: 高密度烃；层流火焰传播速度；本生灯；预混燃烧

Abstract: To comprehend the premixed combustion characteristics of liquid fuel，using the Bunsen burner method and digital image processing technology ，the laminar flame speed of high density hydrocarbons and lean fuel ignition and extinction limit were measured. Results show that laminar flame speed of high density hydrocarbon near the appropriate ratio 1.1 took the maximum value. At lean fuel combustion phase，the change rate of laminar flame speed was smaller than that at rich fuel combustion phase. The change of the fuel flow had little impact on laminar flame speed in the same equivalent ratio. The increase of the mixed gas temperature could increase laminar flame speed. With the increase of the mixed gas temperature，the change rate of the laminar flame speed increased along with the change of equivalent ratio. When fuel flow was less than 35ml/h，the equivalence ratio of lean fuel ignition and extinction limit had some fluctuations，and with the increase of the mixed gas temperature，the value was reduced，but not much.

Key words: High density hydrocarbon；Laminar flame speed；Bunsen burner；Premixed combustion

李鹏飞,费立群,金仁瀚,朱冬清,刘勇. 高密度烃层流火焰传播速度试验研究[J]. 推进技术, 2015, 36(8): 1193-1198.

LI Peng-fei¹,FEI Li-qun²,JIN Ren-han¹,ZHU Dong-qing¹,LIU Yong¹. Experimental Research of Laminar Flame Speed of[J]. Journal of Propulsion Technology, 2015, 36(8): 1193-1198.

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