贯通巷道中流场的数值模拟研究

Numerical Simulation Study of Flow Field in the Perforation Airway

根据流体动力学基本理论,确定了贯通巷道中风流流动的三维湍流模型,分析了计算边界条件,并结合实际应用Fluent计算流体力学软件模拟了贯通巷道中的三维流场,得出了巷道中典型截面的流场规律。模拟解算结果表明:在巷道中靠近壁面处风速较低且流场不稳定,风速分布很不均匀,速度梯度比较大,而巷道轴中心处风速较高且流场较稳定,即,风速分布较均匀,速度梯度较小。

Based on the foundational theory of Fluid Dynamics,the present paper sets up the three- dimensional turbulence model of airflow in perforation airway and calculation boundary,and combined with practice,using Fluent software of computational fluid dynamics （CFD） simulated three-dimensional flow field of perforation airway,and the flow field regularity of typical sections has been obtained by numerical simulation.According to the results of numerical simulation reveals that,the wind speed in the area of approaches tunnel is lower than the airway center, and the flow field of the airway center is more steady than the area of approaches tunnel.