| 巷道壁面与瓦斯爆炸相互作用的数值模拟 |
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| 引用本文： | 马秋菊, 张奇, 庞磊. 巷道壁面与瓦斯爆炸相互作用的数值模拟[J]. 爆炸与冲击, 2014, 34(1): 23-27. doi: 10.11883/1001-1455(2014)01-0023-05 |
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| 作者姓名： | 马秋菊 张奇 庞磊 |
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| 作者单位： | 1. 北京理工大学爆炸科学与技术国家重点实验室，北京 100081; 2. 北京市劳动保护科学研究所，北京 100054 |
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| 基金项目： | 国家自然科学基金项目(11372044);高等学校博士学科点专项科研基金项目(20101101110005)~~ |
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| 摘 要： | 通过物理机制分析，建立合理的巷道物理模型，并对燃烧爆炸反应模型中阻力系数CD和湍流特征尺度Lt进行修正，模拟实际巷道内壁粗糙情况对瓦斯爆炸传播过程的影响，为模型计算提供修正参数。研究结果表明，巷道壁面条件对瓦斯爆炸过程有很大影响；CD和Lt越大，爆炸峰值超压越大；当CD＝3、Lt＝0.008时，模拟结果与实验值的偏差最小。
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| 关 键 词： | 爆炸力学 瓦斯爆炸过程 巷道物理模型 瓦斯爆炸 阻力系数 湍流特征尺度 |
| 收稿时间： | 2012-07-16 |
| 修稿时间： | 2013-01-08 |
Numerical simulation on interaction between laneway surface and methane explosion |
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| Qiu-ju Ma, Qi Zhang, Lei Pang. Numerical simulation on interaction between laneway surface and methane explosion[J]. Explosion And Shock Waves, 2014, 34(1): 23-27. doi: 10.11883/1001-1455(2014)01-0023-05 |
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| Authors: | Qiu-ju Ma Qi Zhang Lei Pang |
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| Affiliation: | 1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China; 2. Beijing Municipal Institute of Labour Protection, Beijing 100054, China |
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| Abstract: | To investigate the effects of the laneway surfaces on the methane explosion, the mechanism of the methane explosion was analyzed and a physical model for the laneway was proposed.Based on the above, numerical simulations were conducted to explore the effects of the inner surface roughness on the explosion propagation by modifying the drag coefficient and the turbulent length scale in the reaction model of the methane explosion.The simulated results display that the laneway surface can influence evidently the methane explosion in it.The higher the values of the drag coefficient and the turbulent length scale, the higher the peak overpressure of the methane explosion.And the simulated results correspond best to the experimental data when the drag coefficient and the turbulent length scale are 3 and 0.008, respectively. |
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| Keywords: | mechanics of explosion methane explosion process physical model of laneway methane explosion drag coefficient turbulent length scale |
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