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采用多流体网格法,基于JWL状态方程,用面向对象的C++语言自行开发编制了NM—MMIC通用多物质二维流体弹塑性程序,对有和无防护档墙的爆炸空气冲击波进行了数值模拟,并用VISC2D可视化软件对计算结果进行动画演示,从中不仅可以看到爆炸过程的整体概貌,还可以清晰地显示细微过程。计算结果基本符合冲击波饶过挡墙的物理现象和规律,这说明该物理模型和数值算法较为合理,可用于对可能发生的爆炸事故进行风险评估。
Based on JWL equation of state, NM-MMIC universal multi-material two-dimensional fluid elasto-plastic program was developed by using multi-fluid grid method and object-oriented C ++ language. The explosion air shock wave with and without guard wall was numerically simulated , And use VISC2D visualization software to animate the calculation results, which can not only see the overall overview of the explosion process, but also show the subtle process clearly. The calculated results are basically consistent with the physical phenomena and laws of the shock wave over the retaining wall, which shows that the physical model and numerical algorithm are more reasonable and can be used for risk assessment of possible explosion accidents.