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通过建立瓦斯爆炸可压缩流场的数学模型 ,运用 TVD(total variationdiminishing)格式的有限差分方法 ,模拟了瓦斯爆炸冲击波峰值超压沿井巷的衰减规律 ,说明了瓦斯爆炸过程存在冲击波二次反冲过程 .对瓦斯爆炸二次反冲形成的机理进行了分析 .其结果为实际防爆工程设计提供了理论基础和依据。
By establishing the mathematic model of compressible flow field in gas explosion and using the finite difference method of TVD (total variationdiminishing) format, the attenuation law of peak overpressure of gas explosion shock wave along the roadway is simulated. The results show that the shock wave secondary recoil Process.The mechanism of secondary recoil of gas explosion was analyzed.The results provided theoretical basis and basis for the actual explosion proof engineering design.