Volume 32 Issue 9
Sep.  2017
Turn off MathJax
Article Contents
Article Navigation >  Journal of Aerospace Power  > 2017  >  32(9): 2100-2109
Combustion characteristics of liquid fuel diffusion flame at capillary oulet[J]. Journal of Aerospace Power, 2017, 32(9): 2100-2109. doi: 10.13224/j.cnki.jasp.2017.09.008
Citation: Combustion characteristics of liquid fuel diffusion flame at capillary oulet[J]. Journal of Aerospace Power, 2017, 32(9): 2100-2109. doi: 10.13224/j.cnki.jasp.2017.09.008
shu

Combustion characteristics of liquid fuel diffusion flame at capillary oulet

doi: 10.13224/j.cnki.jasp.2017.09.008
  • Received Date: 2016-01-26
  • Publish Date: 2017-09-28
    Abstract
  • In order to study the characteristics of micro scale diffusion flame, liquid fuels were chosen for combustion experiment, and the theoretical models were used to estimate the height of the laminar flame. The following results were obtained. The flame size increased with the increase of the volume flow; in the horizontal direction, when the fuel volume flow was more than 50μL/min, a droplet injection occurred because of the incomplete fuel evaporation, and the flame size changed a little; when the capillary was placed vertically, because of the greater influence of buoyancy, the flame height was elongated. Flame oscillation period decreased with the increase of volume flow, and the bigger flame size meant the stronger flame oscillation. Flame oscillation period in vertical direction was smaller than in horizontal direction. With the increase of carbon content, the flame size became larger, and the oscillation was stronger. Kerosene with more carbon content injected fuel around the nozzle, resulting in unstable flame. The flame height was proportional to the Reynolds number of the fuel vapor at nozzle in the vertical direction, Roper model predicted the experimental result best, helping to calculate the laminar diffusion flame height of liquid hydrocarbon fuels in the vertical direction.

     

    • FullText(HTML)
  • loading
    • References(25)
  • [1]
    MARBACH T L,AGRAWAL A K. Heat recirculating combustor using porous inert media for mesoscale applications[J].Journal of Propulsion and Power,2006,22(1):145-150.
    [2]
    FERNANDEZPELLO A C.Micropower generation using combustion:issues and approaches[J].Proceedings of the Combustion Institute,2002,29(1):883-899.
    [3]
    ZHONG Beijing,WANG Jianhua.Experimental study on premixed CH4/air mixture combustion in micro Swissroll combustors[J].Combustion and Flame,2010,157(12):2222-2229.
    [4]
    APPEL C,MANTZARAS J,SCHAEREN R,et al.An experimental and numerical investigation of homogeneous ignition in catalytically stabilized combustion of hydrogen/air mixtures over platinum[J].Combustion and Flame,2002,128(4):340-368.
    [5]
    CHEN C P,CHAO Y C,CHENG T S,et al.Structure and stabilization mechanism of a microjet methane diffusion flame near extinction[J].Proceedings of the Combustion Institute,2007,31(2): 3301-3308.
    [6]
    SINHA A,GANGULY R,PURI I K.Control of confined nonpremixed flames using a microjet[J].International Journal of Heat and Fluid Flow,2005,26(3):431-439.
    [7]
    KUWANA K,TAGAMI N,MIZUNO S,et al.Extinction of laminar jet diffusion microflames[J].Proceedings of the Combustion Institute,2009,32(2):3115-3121.
    [8]
    WON S H,CHA M S,PARK C S,et al.Effect of electric fields on reattachment and propagation speed of tribrachial flames in laminar coflow jets[J].Proceedings of the Combustion Institute,2007,31(1):963-970.
    [9]
    WON S H,RYU S K,KIM M K,et al.Effect of electric fields on the propagation speed of tribrachial flames in coflow jets[J].Combustion and Flame,2008,152(4):496-506.
    [10]
    MATTA L M,NEUMEIER Y,LEMON B,et al.Characteristics of microscale diffusion flames[J].Proceedings of the Combustion Institute,2002,29(1):933-939.
    [11]
    BAKER J,CALVERT M E,MURPHY D W.Structure and dynamics of laminar jet microslot diffusion flames[J].Transactions of the ASME:Serie C Journal of Heat Transfer,2002,124(4):783-790.
    [12]
    PHAM T K,DUNNRANKIN D,SIRIGNANO W A.Flame structure in smallscale liquid film combustors[J].Proceedings of the Combustion Institute,2007,31(2):3269-3275.
    [13]
    KYRITSIS D C,GUERREROARIAS I,ROYCHOUDHURY S,et al.Mesoscale power generation by a catalytic combustor using electrosprayed liquid hydrocarbons[J].Proceedings of the Combustion Institute,2002,29(1):965-972.
    [14]
    杨泽亮,刘志成,甘云华.液体燃料小尺度扩散火焰影响因素分析[J].顺德职业技术学院学报,2009,7(4):15-18. YANG Zeliang, LIU Zhicheng, GAN Yunhua.Analysis of the influencing factors of liquid fuel miniscale diffusion flame[J]. Journal of Shunde Polytechnic,2009,7(4):15-18.(in Chinese)
    [15]
    杨泽亮,甘云华,赖伟其.液体燃料扩散小火焰的实验研究[J].热科学与技术,2009,8(2): 151-155. YANG Zeliang,GAN Yunhua,LAI Weiqi,et al.Experimental study on small diffusion flames of liquid fuel[J].Journal of Thermal Science and Technology,2009,8(2):151-155.(in Chinese)
    [16]
    LI J,HUANG J,YAN M,et al.Experimental study of nheptane/air combustion in mesoscale burners with porous media[J].Experimental Thermal and Fluid Science,2014,52(1):47-58.
    [17]
    LI J,HUANG J,ZHAO D,et al.Diffusion combustion of liquid Heptane in a small tube with and without heat recirculating[J].Combustion Science and Technology,2012,184(10):1591-1607.
    [18]
    ROPER F G.The prediction of laminar jet diffusion flame sizes: Part Ⅰ theoretical model[J].Combustion and Flame,1977,29(3):219-226.
    [19]
    ROPER F G,SMITH C,CUNNINGHAM A C.The prediction of laminar jet diffusion flame sizes: Part Ⅱ experimental verification[J].Combustion and Flame,1977,29(3):227-234.
    [20]
    ALTENKIRCH R A,EICHHORN R,HSU N N,et al.Characteristicsof laminar gas jet diffusion flames under the influence of elevated gravity[J].Symposium on Combust,1977,16(1):1165-1174.
    [21]
    SPALDING D B.The laminer diffusion flame[M].Amsterdam, Holland:Elsevier,1979.
    [22]
    KLAJN M,OPPENHEIM A K.Influence of exothermicity on the shape of a diffusion flame[J].Symposium on Combust,1982,19(1):223-235.
    [23]
    MAHALINGAM S,FERZIGER J H,CANTWELL B J.Selfsimilar diffusion flame[J].Combustion and Flame,1990,82(2):231-234.
    [24]
    邱佐祯.液体燃料在毛细管出口处燃烧特性研究[D]. 北京：北京理工大学,2015. QIU Zhuozhen.Studies on the combustion characteristics of liquid fuel in capillary tube[D].Beijing:Beijing Institute of Technology,2015.(in Chinese)
    [25]
    黄勇.燃烧与燃烧室[M].北京：北京航空航天大学出版社,2009.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索
    Get Citation
    PDF(1216.0KB)
    XML

    Article Metrics

    Article views (1095) PDF downloads(491) Cited by()
    Proportional views
    Related

    Copyright © 《Journal of Aerospace Power》 All Rights Reserved.

    Supported by: Beijing Renhe Information Technology Co., Ltd.  

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return