| 立体结构障碍物不同阻塞比对火焰传播的影响 |
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| 引用本文： | 刘玉华,丁以斌.立体结构障碍物不同阻塞比对火焰传播的影响[J].湖南有色金属,2008,24(1):1-4. |
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| 作者姓名： | 刘玉华 丁以斌 |
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| 作者单位： | 1. 长沙矿冶研究院,湖南,长沙,410012
2. 中国科技大学,安徽,合肥,230026 |
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| 摘 要： | 通过运用自行设计的火焰加速系统,文章研究了立体结构障碍物对预混甲烷火焰传播过程中火焰传播速度和超压的影响。选用五种立体结构障碍物,平板、长方体、三棱柱、四棱柱和圆柱,其阻塞比分别有20%、40%和60%。结果表明在相同阻塞比下,平板、三棱柱对增加火焰传播速度和超压相对较大,长方体居中,圆柱、四棱柱影响相对有限。研究有助于对矿井瓦斯爆炸预防控制以及为工业安全设计提供参考。
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| 关 键 词： | 火焰加速 立体结构 障碍物 阻塞比 火焰传播速度 超压 |
| 文章编号： | 1003-5540(2008)01-0001-04 |
| 修稿时间： | 2008年1月15日 |
Effect of Different Blockage Ratios of Solid Structure Obstacles on Flames Transmission |
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| LIU Yu-hua,DING Yi-bin.Effect of Different Blockage Ratios of Solid Structure Obstacles on Flames Transmission[J].Hunan Nonferrous Metals,2008,24(1):1-4. |
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| Authors: | LIU Yu-hua DING Yi-bin |
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| Affiliation: | LIU Yu-hua, DING Yi-bin ( 1. Changsha Research Institute of Mining and Metallurgy, Changsha 410012, China ; 2. University of Science and Technology of China, Hefei 230026, China) |
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| Abstract: | By via of applying self- designed experimental system for flame acceleration and choosing five different solid structure obstacles, the paper investigated solid structure obstacles effect on flame speed and overpressure of premixed methane. Plates, cuboids, triple prisms, quadruple prisms, cylinders were adopted with three kinds of blockage ratios,20% ,40% and 60%. To the same blockage ratios, results show plates and triple prisms increase flame speed and overpressure much larger; cuboids are intermediate; effects of quadruple prisms and cuboids are comparatively limited. The results are expected to have some help on preventing and controlling methane explosive in mine and providing reference for industry safety design. |
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| Keywords: | flame acceleration solid structure obstacles blockage ratios flame speed overpressure |
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