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It is important to research light scattering from fire smoke particles by numerical calculation. Traditionally, spherical or spheroid models were used to approximate the shape of smoke particles for light scattering calculations. But actually, smoke particles have a similar fractal structure, which is different from spherical structure. Using the discrete-dipole approximation method, the light scattering Muller matrices were computed for the randomly oriented fractal aggregate, as well as the spherical particle with the same aggregate volume, and then their normalized Muller matrix elements were compared. The results indicate that the angular distributions of the normalized matrix elements F11(θ)/F11(0), F22(θ)/F11(θ) and F34(θ)/F11(θ) have significant differences between the fractal model and spherical model. We can discriminate spherical non-fire aerosols from smoke particles, using the difference of F22(θ)/F11(θ) between fractal model and spherical model.
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Keywords:
- smoke detection /
- fire smoke particle /
- fractal model /
- spherical model
[1] Xie Q Y, Zhang Y M, Yuan H Y, Qiao L F, Jiang Y L 2006 J. Univ. Sci. Technol. China 36 320 (in Chinese) [谢启源、张永明、袁宏永、赵建华、乔利锋、蒋亚龙 2006 中国科学技术大学学报 36 320]
[2] Shu X M, Fang J, Shao Q, Yuan H Y 2005 J. Engng. Sci. China 7 0045 (in Chinese) [疏学明、方 俊、邵 荃、袁宏永 2005 中国工程科学 7 0045]
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[4] Zhao J H, Yuan H Y, Fan W C, Chen T 2002 Acta Phys. Sin. 51 700 (in Chinese) [赵建华、袁宏永、范维澄、陈 涛 2002 51 700]
[5] Lumme K, Rahola J, Hovenie J W 1997 Icarus 126 455
[6] Kimura H 2001 J. Quant. Spectrosc. Radiat. Transfer 70 581
[7] Manickavasagam S, Menguc M P 1997 Appl. Opt. 36 1337
[8] 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 58 7168]
[9] 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 56 4068]
[10] Sun X M, Shen J, Wei P Y 2009 Acta Phys. Sin. 58 6222 (in Chinese) [孙贤明、申 晋、魏佩瑜 2009 58 6222]
[11] Dai B, Luo X D, Wang Y W 2009 Acta Phys. Sin. 58 3864 (in Chinese) [戴 兵、罗向东、王亚伟 2009 58 3864]
[12] Filippov A V, Zurita M, Rosner D E 2000 J. Colloid Interfac. Sci. 229 261
[13] 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 55 4466]
[14] Küylü V , Faeth G M 1995 Combust. Flam. 100 621
[15] 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 56 6736 ]
[16] Klusek C, Manickavasagam S, Mengü M P 2003 J. Quant. Spectrosc. Radiat. Transfer 79 839
[17] Mishchenko M I, Travis L D, Lacis A A 2002 Scattering, Absorption, and Emission of Light by Small Particles (UK:Cambridge University Press ) pp115, 83, 139
[18] Draine B T, Flatau P J 1994 J. Opt. Soc. Am. A 11 1491
[19] Rao R Z 1998 Acta Phys. Sin. 47 1790 (in Chinese) [饶瑞中 1998 47 1790]
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[1] Xie Q Y, Zhang Y M, Yuan H Y, Qiao L F, Jiang Y L 2006 J. Univ. Sci. Technol. China 36 320 (in Chinese) [谢启源、张永明、袁宏永、赵建华、乔利锋、蒋亚龙 2006 中国科学技术大学学报 36 320]
[2] Shu X M, Fang J, Shao Q, Yuan H Y 2005 J. Engng. Sci. China 7 0045 (in Chinese) [疏学明、方 俊、邵 荃、袁宏永 2005 中国工程科学 7 0045]
[3] Loepfe M, Ryser P, Tompkin C, Wieser D 1997 Fire Saf. J. 29 185
[4] Zhao J H, Yuan H Y, Fan W C, Chen T 2002 Acta Phys. Sin. 51 700 (in Chinese) [赵建华、袁宏永、范维澄、陈 涛 2002 51 700]
[5] Lumme K, Rahola J, Hovenie J W 1997 Icarus 126 455
[6] Kimura H 2001 J. Quant. Spectrosc. Radiat. Transfer 70 581
[7] Manickavasagam S, Menguc M P 1997 Appl. Opt. 36 1337
[8] 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 58 7168]
[9] 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 56 4068]
[10] Sun X M, Shen J, Wei P Y 2009 Acta Phys. Sin. 58 6222 (in Chinese) [孙贤明、申 晋、魏佩瑜 2009 58 6222]
[11] Dai B, Luo X D, Wang Y W 2009 Acta Phys. Sin. 58 3864 (in Chinese) [戴 兵、罗向东、王亚伟 2009 58 3864]
[12] Filippov A V, Zurita M, Rosner D E 2000 J. Colloid Interfac. Sci. 229 261
[13] 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 55 4466]
[14] Küylü V , Faeth G M 1995 Combust. Flam. 100 621
[15] 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 56 6736 ]
[16] Klusek C, Manickavasagam S, Mengü M P 2003 J. Quant. Spectrosc. Radiat. Transfer 79 839
[17] Mishchenko M I, Travis L D, Lacis A A 2002 Scattering, Absorption, and Emission of Light by Small Particles (UK:Cambridge University Press ) pp115, 83, 139
[18] Draine B T, Flatau P J 1994 J. Opt. Soc. Am. A 11 1491
[19] Rao R Z 1998 Acta Phys. Sin. 47 1790 (in Chinese) [饶瑞中 1998 47 1790]
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