| 大尺寸密闭空间内甲烷—空气混合过程的数值模拟 |
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| 引用本文： | 王博,李斌,樊保龙,白春华.大尺寸密闭空间内甲烷—空气混合过程的数值模拟[J].爆破器材,2014(2):5-9. |
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| 作者姓名： | 王博 李斌 樊保龙 白春华 |
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| 作者单位： | 北京理工大学爆炸科学与技术国家重点实验室,北京100081 |
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| 基金项目： | 中国博士后科学基金（2013M530535） |
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| 摘 要： | 根据10 m3多功能步入式爆炸罐的结构特点,依据进气—混气一体化的设计理念,建立了适用于10 m3爆炸罐的轴对称直管式进气—混气系统,并利用计算流体力学软件FLUENT,对进气—混气系统的具体设计参数进行了优化。通过模拟得到了直管上不同开孔孔径、开孔间距条件下小孔体积流量率的变化规律,发现减小整体开孔孔径、减小开孔间距、调整个别小孔大小能够提高小孔体积流量率的一致性,达到气体快速均匀混合的效果。
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| 关 键 词： | 爆炸罐 大尺寸密闭空间 混气系统 数值模拟 |
Numerical Simulation of the Mixing Process of Methane and Air in Large Scale Confined Spaces |
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| WANG Bo,LI Bin,FAN Baolong,BAI Chunhua.Numerical Simulation of the Mixing Process of Methane and Air in Large Scale Confined Spaces[J].Explosive Materials,2014(2):5-9. |
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| Authors: | WANG Bo LI Bin FAN Baolong BAI Chunhua |
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| Affiliation: | (State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology Beijing, 100081) |
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| Abstract: | An axisymmetric straight tubes gas intake-mixing system was designed according to both the characteristics of a 10m3 versatile stepping explosion vessel and the air-gas intake-mixing integrated design philosophy. FLUENT, the software of computational fluid dynamics,was used to optimize specific design parameters of the gas intake-mixing system. The variation of the hole volumetric flow rate of gas pipe under different pore openings and hole spacing is obtained,showing that reducing the overall pore openings and hole spacing and adjusting the size of the individual holes can improve the consistency of hole volumetric flow rate. By this means,rapid,efficient and uniform gas mixing can be achieved. |
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| Keywords: | explosion vessel large scale confined spaces gas mixing system numerical simulation |
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