Characteristics of gas explosion flow fields in complex pipelines
查看参考文献11篇
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文摘
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The explosion flow field in five straight pipes with different diameters and one bending pipe selected from a domestic coal mine are studied by the method of numerical simulation. And the results show that, both in the straight and bending pipes, the pressure wave and velocity wave are accelerated by the rising of reaction rate. As the explosion progressed, with the temperature reaching approximately 3000 K, only one pressure wave and one reaction rate wave were observed, while several velocity waves were found. The larger diameter presented the highest relative pressure as well as the largest velocity increase and subsequent decrease inside the tube. The bent pipes caused both turbulence and kinetic energy to increase, resulting in the acceleration of the reaction rate. The burning time was 7.4% shorter than the burning time observed for the straight pipe. Based on these results, designing one explosion resistance device, and in the practical engineering applications, it was to be proved to meet the security requirements fully. |
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来源
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International Journal of Mining Science and Technology
,2015,25(1):157-164 【核心库】
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DOI
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10.1016/j.ijmst.2014.12.010
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关键词
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Explosion
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Numerical simulation
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Acceleration
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Reaction rate
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地址
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1.
School of Mechanical Engineering, Dalian University of Technology, Dalian, 116023
2.
Shenyang Branch, China Coal Research Institute, Shenyang, 110016
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语种
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英文 |
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文献类型
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研究性论文 |
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ISSN
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2095-2686 |
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学科
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矿业工程 |
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基金
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National Key Scientific Apparatus Development of Special Item
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国家自然科学基金
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国家973计划
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文献收藏号
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CSCD:5402229
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参考文献 共
11
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