Mehdi Bidabadi, Aboozar Fanaee, Alireza Rahbari. Investigation Over the Recirculation Influence on the Combustion of Micro Organic Dust Particles[J]. Applied Mathematics and Mechanics, 2010, 31(6): 659-669. doi: 10.3879/j.issn.1000-0887.2010.06.003
Citation: Mehdi Bidabadi, Aboozar Fanaee, Alireza Rahbari. Investigation Over the Recirculation Influence on the Combustion of Micro Organic Dust Particles[J]. Applied Mathematics and Mechanics, 2010, 31(6): 659-669. doi: 10.3879/j.issn.1000-0887.2010.06.003

Investigation Over the Recirculation Influence on the Combustion of Micro Organic Dust Particles

doi: 10.3879/j.issn.1000-0887.2010.06.003
  • Received Date: 1900-01-01
  • Rev Recd Date: 2010-02-24
  • Publish Date: 2010-06-15
  • The role of recirculation and non-unity Lew is number on the combustion of organic dust particles were investigated. Since recirculation effect is more no ticeable in micro-combustors, it is necessary to propose a modeling approach of this phenomenon to better simulate the perform anceofmicro-combustors. In this research, in order to model the combustion of organic dust particles, it was assumed that the dust particles vaporize first to yield a known chemical structure which was oxidized in the gas phase, and the chemical structure of this gaseous fuel was assumed methane. To study the flame structure and solve the governing equations, it was considered that the flame structure consists of three zonestitled the prehea-tvaporization zone, the narrow reaction zone and finally the post flame zone. The recircu lation phenom enon was evaluated by entering the exhausted heat from the post flame zone in to the preheat zone. The solution was based on the following approach. First, the governing equations in each zone were nond imensionalized. Then the needed boundary and matching conditions were applied in each zone. A fter that, these equations and the required boundary and matching conditions were simultaneously solved with the analytical model. Consequently, the remarkable effects of recirculation and nonunity Lew is number on the combustion characteristics of the organic dust particles such as burning velocity and temperature profiles for different particle radiiare obtained. The results show reasonable agreement with published experimental data.
  • loading
  • [1]
    Cashdollar K L. Overview of dust explosibility characteristics [J]. Journal of Loss Prevention in the Process Industries, 2000, 13(3/5): 183-199. doi: 10.1016/S0950-4230(99)00039-X
    [2]
    Han O-S, Yashima M, Matsuda T, Matsui H, Miyake A, Ogawa T. Behavior of flame propagating through lycopodium dust clouds in a vertical duct [J]. Journal of Loss Prevention in the Process Industries, 2000, 13(6): 449-457. doi: 10.1016/S0950-4230(99)00072-8
    [3]
    Han O-S, Yashima M, Matsuda T, Matsui H, Miyake A, Ogawa T. A study of flame propagation mechanisms in Lycopodium dust clouds based on dust particles behaviour [J]. Journal of Loss Prevention in the Process Industries, 2001, 14(3): 153-160. doi: 10.1016/S0950-4230(00)00049-8
    [4]
    Kurdyumov V N, Fernandez-Tarrazo E. Lewis number effect on the propagation of premixed laminar flames in narrow open ducts [J]. Combustion and Flame, 2002, 128(4): 382-394. doi: 10.1016/S0010-2180(01)00358-3
    [5]
    Shamim T. The effect of Lewis number on radiative extinction and flamelet modeling[J]. International Journal of Heat and Mass Transfer, 2002, 45(6): 1249-1259. doi: 10.1016/S0017-9310(01)00223-X
    [6]
    Proust C. A few fundamental aspects about ignition and flame propagation in dust clouds [J]. Journal of Loss Prevention in the Process Industries, 2006, 19(2/3): 104-120. doi: 10.1016/j.jlp.2005.06.035
    [7]
    Proust C. Flame propagation and combustion in some dust-air mixtures [J]. Journal of Loss Prevention in the Process Industries, 2006, 19(1): 89-100. doi: 10.1016/j.jlp.2005.06.026
    [8]
    Eckhoff R K. Differences and similarities of gas and dust explosions: a critical evaluation of the European ‘ATEX’ directives in relation to dusts [J]. Journal of Loss Prevention in the Process Industries, 2006, 19(6): 553-560. doi: 10.1016/j.jlp.2006.01.001
    [9]
    Babrauskas V. Ignition: a century of research and an assessment of our current status[J]. Journal of Fire Protection Engineering, 2007, 17(3): 165. doi: 10.1177/1042391507059434
    [10]
    Chakraborty S, Mukhopadhyay A, Sen S. Interaction of Lewis number and heat loss effects for a laminar premixed flame propagating in a channel[J]. International Journal of Thermal Sciences, 2008, 47(1): 84-92. doi: 10.1016/j.ijthermalsci.2007.01.025
    [11]
    Chen Z, Burke M P, Ju Y. Effects of Lewis number and ignition energy on the determination of laminar flame speed using propagating spherical flames[J]. Proceedings of the Combustion Institute, 2009, 32(1): 1253-1260. doi: 10.1016/j.proci.2008.05.060
    [12]
    Daou J, Matalon M. Influence of conductive heat losses on the propagation of premixed flames in channels[J]. Combustion and Flame, 2002, 128(4): 321-339. doi: 10.1016/S0010-2180(01)00362-5
    [13]
    Daou J, Matalon M. Flame propagation in channels: differential diffusion effects[C]3rd Joint Meeting of the US Sections of the Combustion Institute.Chicago, Illinois, 2003.
    [14]
    Ronney P D. Analysis of non-adiabatic heat-recirculating combustors[J]. Combustion and Flame, 2003, 135(4): 421-439. doi: 10.1016/j.combustflame.2003.07.003
    [15]
    Leach T, Cadou C P, Jackson G. Effect of structural heat conduction and heat loss on combustion in micro-channels[J]. Combustion Theory and Modeling, 2006, 10(1): 85-103. doi: 10.1080/13647830500277332
    [16]
    Leach T T, Cadou C P. The role of structural heat exchange and heat loss in the design of efficient silicon micro-combustors[J]. Proceedings of the Combustion Institute, 2004, 30(2): 2437-2444.
    [17]
    Deng W W, Klemic J F, Li X H, Reed M A, Gomez A. Liquid fuel microcombustor using microfabricated multiplexed electrospray sources[J]. Proceedings of the Combustion Institute, 2007, 31(2): 2239-2246. doi: 10.1016/j.proci.2006.08.080
    [18]
    Bidabadi M, Rahbari A. Modeling combustion of lycopodium particles by considering the temperature difference between the gas and the particles[J]. Combustion, Explosion and Shock Waves, 2009, 45(3): 49-57.
    [19]
    Bidabadi M, Haghiri A, Rahbari A. The effect of Lewis and Damkohler numbers on the flame propagation through micro organic dust particles [J]. International Journal of Thermal Sciences, 2010, 49(3): 534-542. doi: 10.1016/j.ijthermalsci.2009.10.002
  • 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

    Article Metrics

    Article views (1459) PDF downloads(766) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return