|本期目录/Table of Contents|

[1]陈钰方,董新庄,王新华,等.基于多孔环形喷嘴的可燃爆粉尘分散特征的密度效应研究*[J].中国安全生产科学技术,2020,16(8):82-87.[doi:10.11731/j.issn.1673-193x.2020.08.013]
 CHEN Yufang,DONG Xinzhuang,WANG Xinhua,et al.Study on density effect for dispersion characteristics of combustible and explosive dust based on perforated annular nozzle[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2020,16(8):82-87.[doi:10.11731/j.issn.1673-193x.2020.08.013]
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基于多孔环形喷嘴的可燃爆粉尘分散特征的密度效应研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
16
期数:
2020年8期
页码:
82-87
栏目:
职业安全卫生管理与技术
出版日期:
2020-08-31

文章信息/Info

Title:
Study on density effect for dispersion characteristics of combustible and explosive dust based on perforated annular nozzle
文章编号:
1673-193X(2020)-08-0082-06
作者:
陈钰方董新庄王新华王继业丁建旭
(1.广州特种机电设备检测研究院 国家防爆设备质量监督检验中心,广东 广州 510760;
2.中国人民警察大学 防火工程学院,河北 廊坊 065099 )
Author(s):
CHEN Yufang DONG Xinzhuang WANG Xinhua WANG Jiye DING Jianxu
(1.China National Quality Supervision and Testing Center of Explosionproof Equipment,Guangzhou Academy of Special Equipment Inspection Testing,Guangzhou Guangdong 510760,China;
2.College of Fire Protection Engineering,China People’s Police University,Langfang Hebei 065099,China)
关键词:
密度效应多孔环形喷嘴分散特征可燃爆粉尘20 L爆炸装置
Keywords:
density effect perforated annular nozzle dispersion characteristics combustible and explosive dust 20 L explosion test device
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2020.08.013
文献标志码:
A
摘要:
为了研究不同密度的可燃爆粉尘在内置多孔环形喷嘴的20 L爆炸特性测试装置中的分散特征,基于负载粒子流方法、耦合DPM动量平衡方程和时间平均 NavierStokes控制方程组,实现3种不同密度的煤粉、铝粉和锆粉在20 L爆炸测试装置中粉尘分散全过程的数值模拟。研究结果表明:多孔环形喷嘴的分散较为均匀,但是约束管道末端存在局部粉尘残留区,致使爆炸仓内真实粉尘浓度远低于形式浓度;爆炸仓中心位置的最大湍动能随着粉尘密度的增加而减小,只有显著地变化粉尘密度才能展示区分度较高的浓度峰值和抵达浓度峰值的时间。
Abstract:
To study the dispersion characteristics of combustible and explosive dust with different densities in the 20 L explosion characteristics test device with a builtin perforated annular nozzle,based on the particleloaded flow method,and coupling the DPM momentum balance equation and timeaveraged NavierStokes governing equations,the numerical simulation on the whole process of dust dispersion for the coal dust,aluminum dust and zirconium dust with three types of different densities in the 20 L explosion test device was realized.The results showed that the dispersion of the perforated annular nozzle was relatively uniform,but there was a local dust residual zone at the end of constrained pipe,so that the actual dust concentration in the explosion chamber was much lower than the normal concentration.The maximum turbulent energy at the center of explosion chamber decreased with the increase of dust density,and the peak concentration and the time to reach it with higher discrimination could be presented only under the significant change of dust density.

参考文献/References:

[1]ABBASI T,ABBASI S A.Dust explosions-cases,causes,consequences,and control [J].Journal of Hazardous Materials,2007,140:7-44.
[2]LEBECKI K,CYBULSKI K,S'LIZ J,et al.Large scale grain dust explosions research in Poland[J].Shock Waves,1995,5(1):109-114.
[3]潘峰,马超,曹卫国,等.玉米淀粉粉尘爆炸危险性研究 [J].中国安全科学学报,2011,21(7):46-51. PAN Feng,MA Chao,CAO Weiguo,et al.Research on explosion risk of corn starch dust [J].China Safety Science Journal,2011,21(7):46-51.
[4]YAN X Q,YU J L.Dust explosion incidents in China[J].Process Safety Progress,2012,31(2):187-189.
[5]YANG C C,SHIH C L.A coordinated emergency response:a color dust explosion at a 2015 concert in Taiwan[J].American Journal of Public Health,2016,106(9):1582-1585.
[6]MATHEWS A L,CHENG M H,MULLER J M,et al.Cost analysis of 48 burn patients in a mass casualty explosion treated at Chang Gung memorial hospital[J].Injury,2017,48(1):80-86.
[7]ECKHOFF R K.Difference 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.
[8]李新光,张平,RADANDT S,等.20 L球形装置上粉尘湍流速度的测量 [J].东北大学学报,2003,24(10):952-955. LI Xinguang,ZHANG Ping,RADANDT S,et al.Measurement of turbulence velocity of dust in a 20 L sphere [J].Journal of Northeastern University,2003,24(10):952-955.
[9]SCHEUERMANN K P.Studies about the influence of turbulence on the course of explosions[J].Process Safety Progress,1994,13(4):219-226.
[10]DAHOE A E,CANT R S,SCARLETT B.On the decay of turbulence in the 20-liter explosion sphere[J].Flow Turbulence and Combustion,2001,67(3):159-184.
[11]陈嘉琛,张奇,马秋菊,等.20 L球形罐内不同粒径铝粉扩散的数值模拟 [J].高压物理,2014,28(2):202-208. CHENG Jiachen, ZHANG Qi, MA Qiuju, et al.Numerical simulation of aluminum dust dispersion for different particlesizes in 20 lvessel[J].Chinese Journal of High Pressure Physics,2014,28(2):2020-208.
[12]赵一姝,范健强,白建平,等.粉尘浓度对20 L 球罐内硫磺粉尘分散过程流场特性的影响 [J].中国安全生产科学技术,2018,14(7):48-53. ZHAO Yishu,FAN Jianqiang,BAI Jianping,et al.Influence of dust concentration on flow field characteristics of sulfur dust during dispersion process in 20 L spherical tank [J].Journal of Safety Science and Technology,2018,14(7):48-53.
[13]BENEDETTO A D,RUSSO P,SANCHIRICO R,et al.CFD simulations of turbulent fluid flow and dust dispersion in the 20 liter explosion vessel [J].Aiche Journal,2013,59(7):2485-2496.
[14]SALAMONOWICZ Z,KOTOWSKI M,PKA M,et al.Numerical simulation of dust explosion in the spherical 20l vessel[J].Bulletin of the Polish Academy of SciencesTechnical Sciences,2015,63(1):289-293.
[15]SARLI V D,SANCHIRICO R,RUSSO P,et al.CFD modeling and simulation of turbulent fluid flow and dust dispersion in the 20 L explosion vessel equipped with the perforated annular nozzle [J].Journal of Loss Prevention in the Process Industries,2015,38:204-213.

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备注/Memo

备注/Memo:
收稿日期: 2020-04-24
* 基金项目: 国家重点研发计划项目(2017YFC0804705);广州市市场监督管理局科技项目(2019KJ08,2020KJ29)
作者简介: 陈钰方,硕士,主要研究方向为爆炸机理与安全防护。
通信作者: 丁建旭,博士,高级工程师,主要研究方向为爆炸机理与安全防护。
更新日期/Last Update: 2020-09-10