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为研究水力提升系统中固液两相流的运动规律,提高管道水力输送的安全性,采用理论分析和数值模拟相结合的方法,通过对大颗粒在水力提升管道中的运动进行受力分析,得出其动力学方程,利用Gambit软件生成三维提升管道模型,并利用Fluent软件对在管道中的两相流流动进行了数值模拟。得出了两相流流场的速度分布规律以及颗粒轴向速度、径向速度等各种运动参数;研究发现两相流流速沿管径呈梯度分布,大颗粒的轴向速度沿直径基本呈抛物线分布,径向速度沿管径基本保持正态分布。
In order to study the movement law of the solid-liquid two-phase flow in the hydraulic lifting system and improve the safety of hydraulic transmission in the pipeline, a theoretical analysis and a numerical simulation are combined to analyze the force of large particles in the hydraulic lifting pipeline. The kinetic equations are obtained, Gambit software is used to generate 3D lifting pipeline model, and Fluent software is used to simulate the two-phase flow in pipeline. The velocity distribution law of the two-phase flow field and the axial and radial velocity of the particles are obtained. The flow velocity of the two-phase flow is distributed along the pipe diameter gradient. The axial velocity of the large particle along the diameter is basically Parabola distribution, radial velocity along the diameter of the basic normal distribution.