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通过建立瓦斯气体流动模型、细水雾颗粒运动模型,在拉格朗日框架下对细水雾颗粒在瓦斯输送管道内的运动及沉积过程进行追踪。对数值模拟结果分析可知,混合流场在喷嘴两侧分别作顺时针、逆时针运动;细水雾颗粒沉积率在1.5m处达到最大值,在5m以后基本处于稳定状态。通过研究分析,为认识细水雾的运动及沉积规律,解决输送管道内喷嘴安装距离问题提供了一定的理论依据。
Through the establishment of gas flow model and water mist particle movement model, the movement and deposition process of water mist particles in gas pipeline are tracked in Lagrangian frame. The numerical simulation results show that the mixed flow field moves clockwise and counterclockwise respectively on both sides of the nozzle. The deposition rate of water mist particles reaches the maximum at 1.5m and basically stays stable after 5m. Through the research and analysis, it provides a theoretical basis for understanding the movement and deposition law of water mist and solving the problem of nozzle installation distance in pipeline.