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Numerical Simulation on the Gas Explosion Propagation Related to Roadway

机译：巷道瓦斯爆炸传播的数值模拟

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Based on the combustion, explosions and air dynamics and related theory etc, this paper describes the mathematical model of gas explosion in detail, combined with the gas explosion transmission mechanism, make a research on two wave-three area structure of gas explosion and the energy change rule of the array face of precursor wave and the array face of flame wave, with the fluid dynamics analysis Fluent software, this paper makes a numerical simulation and analysis on the overpressure transmission rule when gas explosion takes place in different types roadways. The results of the study show that: Fluent software can be used to accurately simulate gas explosion condition, when explosion wave spreads in the roadway turns, the bigger of the overpressure value in corner, the stronger of the destructive power; when tunnel has bifurcation, the overpressure will release in bifurcation, but explosions wave with flame wave will produce more powerful destruction effect. The research results can be used as a certain reference for how to prevent and control the gas explosion, and how to reduce the power of the gas explosion etc.
机译：本文基于燃烧，爆炸，空气动力学以及相关理论等方面，详细描述了瓦斯爆炸的数学模型，结合瓦斯爆炸的传播机理，对瓦斯爆炸的两波三区结构和能量进行了研究。利用流体动力学分析Fluent软件，对前驱波阵面和火焰波阵面的变化规律进行了数值分析，对不同类型瓦斯巷道发生瓦斯爆炸时的超压传递规律进行了数值模拟和分析。研究结果表明：Fluent软件可用于精确模拟瓦斯爆炸条件，当爆炸波在巷道转弯处扩散时，拐角处的超压值越大，破坏力越强;当隧道分叉时，超压会在分叉中释放，但爆炸波与火焰波会产生更强大的破坏效果。研究结果可为如何预防和控制瓦斯爆炸，如何降低瓦斯爆炸的功率等提供一定的参考。

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