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火灾烟雾颗粒532 nm光散射矩阵实验研究

张启兴 李耀东 邓小玖 张永明

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火灾烟雾颗粒532 nm光散射矩阵实验研究

张启兴, 李耀东, 邓小玖, 张永明

Experimental determination of scattering matrix of fire smoke particles at 532 nm

Zhang Qi-Xing, Li Yao-Dong, Deng Xiao-Jiu, Zhang Yong-Ming
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  • 基于自主研制的结合偏振调制和锁相检测技术的光散射实验装置,测量了两种典型火灾烟雾颗粒(棉绳阴燃烟雾和正庚烷池火烟雾)及超声雾化水滴颗粒的532 nm光散射矩阵元素随散射角的分布. 通过水滴颗粒测量结果与数值计算结果的比较验证了实验装置的可靠性. 对比分析了棉绳阴燃烟雾和正庚烷池火烟雾光散射矩阵元素随散射角的分布特征,讨论了该特征在颗粒区分上的应用. 研究了烟雾颗粒微观形貌特征对光散射矩阵的影响,发现可以利用Lorenz-Mie理论描述棉绳阴燃烟雾的光散射,表明其形貌为球形,并利用模拟退火拟合的方法得到了棉
    Based on polarization modulation and lock-in detection, an experimental apparatus is built to determine several important angular dependent scattering matrix elements at 532 nm. The apparatus is tested by water droplets through comparing measurement results with Mie calculations. Measurement results of scattering matrix elements and element ratios between smoke particles produced by smoldering cotton test fire and those produced from flaming n-heptane test fire are presented. We find that results of Mie calculations are able to describe the experimental data of smoldering cotton test fire smoke, which indicates that the particles generated by smoldering cotton test fire are mostly spherical in shape with considering the particle size relative to the wavelength. Using the optimization method, we estimate the refractive index (m=1.49+i0.01) and size distribution (lognormal distribution, g=2.335 and dg=0.17 m) of smoldering cotton test fire smoke. Contrarily, the experimental data of flaming n-heptane fire smoke cannot be described by Mie scattering, which is interpreted by the nonspherical, fractal aggregate morphology of the particulates.
    • 基金项目: 国家自然科学基金(批准号:50776084,51074147)和火灾科学国家重点实验室基金(批准号:HZ2009-KF08)资助的课题.
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    Xie Q Y, Yuan H Y, Song L W, Zhang Y M 2007 Build. Environ. 42 640

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    Keller A, Loepfe M, Nebiker P, Pleisch R, Burtscher H 2006 Fire Saf. J. 41 266

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    Zhang Q X, Qiao L F, Wang J J, Fang J, Zhang Y M 2009 Proc. SPIE 7511 75110M

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    Ma L, Kranendonk L, Cai W, Zhao Y, Baba J 2009 J. Aerosol Sci. 40 588

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    Hull P, Shepherd I, Hunt A 2004 Appl. Opt. 43 3433

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    [33]

    European Committee for Standardization 2003 Fire Detection and Alarm Systems (Part 7) (London: IHS Press) p37

    [34]
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    Urban D, Griffin D, Ruff G, Cleary T, Yang J, Mulholland G, Yuan Z G 2005 Detecton of Smoke from Microgravity Fires (Warrendale: SAE International) p9

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    Shu X M, Fang J, Shen S F, Liu Y J, Yuan H Y, Fan W C 2006 Acta Phys. Sin. 55 4466 (in Chinese) [疏学明、方 俊、申世飞、刘勇进、袁宏永、范维澄 2006 物理学报 55 4466]

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    Levin E J T, McMeeking G R, Carrico C M, Mack L E, Kreidenweis S M, Wold C E, Moosmuller H, Arnott W P, Hao W M, Collett J L, Malm W C 2010 J. Geophys. Res. 115 D18210

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    [40]

    Loepfe M, Ryser P, Tompkin C, Wieser D 1997 Fire Saf. J. 29 185

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    Kyl V , Faeth G M, Farias T L, Carvalho M G 1995 Combust. Flame 100 621

    [44]

    Zhang Q, Deng X J, Zhang Q X, Li Y D, Zhang Y M 2010 Acta Phys. Sin. 59 7442 (in Chinese) [张 青、邓小玖、张启兴、李耀东、张永明 2010 物理学报 59 7442]

    [45]
  • [1]

    Zhu R 2010 Chin. Phys. B 19 127201

    [2]

    Xiong B T, Zhou B X, Bai J, Zheng Q, Liu Y B, Cai W M, Cai J 2008 Chin. Phys. B 17 3713

    [3]
    [4]
    [5]

    Volten H, Munoz O, Rol E, Haan J F, Vassen W, Hovenier J W 2001 J. Geophys. Res. 106 17375

    [6]
    [7]

    Munoz O, Moreno F, Guirado D, Ramos J L, Lopez A, Girela F, Jeronimo J M, Costillo L P, Bustamante I 2010 J. Quant. Spectrosc. Radiat. Transfer 111 187

    [8]

    Klusek C, Manickavasagam S, Meng M P 2003 J. Quant. Spectrosc. Radiat. Transfer 79 839

    [9]
    [10]

    Qiao L F, Zhang Y M, Xie Q Y, Fang J, Wang J J 2007 Acta Phys. Sin. 56 6736 (in Chinese) [乔利锋、张永明、谢启源、方 俊、王进军 2007 物理学报 56 6736]

    [11]
    [12]

    Lei C X, Zhang H F, Liu H F 2009 Acta Phys. Sin. 58 7168 (in Chinese) [类成新、张化福、刘汉法 2009 物理学报 58 7168]

    [13]
    [14]
    [15]

    Huang C J, Liu Y F, Wu Z S 2007 Acta Phys. Sin. 56 4068 (in Chinese) [黄朝军、刘亚锋、吴振森 2007 物理学报 56 4068]

    [16]
    [17]

    Xie Q Y, Zhang H P, Wan Y T, Zhang Y M, Qiao L F 2007 J. Quant. Spectrosc. Radiat. Transfer 107 72

    [18]
    [19]

    Xie Q Y, Yuan H Y, Song L W, Zhang Y M 2007 Build. Environ. 42 640

    [20]

    Suo-Anttila J, Gill W, Gritzo L, Blake D 2005 Fire Mater. 29 91

    [21]
    [22]
    [23]

    Van de Hulst H C 1957 Light Scattering by Small Particles (New York: John Wiley) p47

    [24]

    Keller A, Loepfe M, Nebiker P, Pleisch R, Burtscher H 2006 Fire Saf. J. 41 266

    [25]
    [26]

    Zhang Q X, Qiao L F, Wang J J, Fang J, Zhang Y M 2009 Proc. SPIE 7511 75110M

    [27]
    [28]
    [29]

    Ma L, Kranendonk L, Cai W, Zhao Y, Baba J 2009 J. Aerosol Sci. 40 588

    [30]
    [31]

    Hull P, Shepherd I, Hunt A 2004 Appl. Opt. 43 3433

    [32]
    [33]

    European Committee for Standardization 2003 Fire Detection and Alarm Systems (Part 7) (London: IHS Press) p37

    [34]
    [35]

    Urban D, Griffin D, Ruff G, Cleary T, Yang J, Mulholland G, Yuan Z G 2005 Detecton of Smoke from Microgravity Fires (Warrendale: SAE International) p9

    [36]

    Shu X M, Fang J, Shen S F, Liu Y J, Yuan H Y, Fan W C 2006 Acta Phys. Sin. 55 4466 (in Chinese) [疏学明、方 俊、申世飞、刘勇进、袁宏永、范维澄 2006 物理学报 55 4466]

    [37]
    [38]

    Levin E J T, McMeeking G R, Carrico C M, Mack L E, Kreidenweis S M, Wold C E, Moosmuller H, Arnott W P, Hao W M, Collett J L, Malm W C 2010 J. Geophys. Res. 115 D18210

    [39]
    [40]

    Loepfe M, Ryser P, Tompkin C, Wieser D 1997 Fire Saf. J. 29 185

    [41]
    [42]
    [43]

    Kyl V , Faeth G M, Farias T L, Carvalho M G 1995 Combust. Flame 100 621

    [44]

    Zhang Q, Deng X J, Zhang Q X, Li Y D, Zhang Y M 2010 Acta Phys. Sin. 59 7442 (in Chinese) [张 青、邓小玖、张启兴、李耀东、张永明 2010 物理学报 59 7442]

    [45]
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出版历程
  • 收稿日期:  2010-11-02
  • 修回日期:  2011-01-10
  • 刊出日期:  2011-04-05

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