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本文根据流体力学与两相流的有关理论与实验观察,提出了两相流管道中固体颗粒悬浮理论。认为两相流管道中固体颗粒除受通常所谓浮重及流体平均速度作用的轴向动力外,还受流体的脉速径向、轴向作用力及涡旋径向升力。在此基础上根据颗粒受力平衡条件,导出了流体三个阻力区的任意倾角管道颗粒悬浮速度理论计算公式。尔后在气固两相流悬浮速度实验台上,对理论公式进行了初步实验验证。验证的几种物科颗粒的悬浮速度实验数据比较接近理论公式计算结果。本文最后并提出了对理论公式的分析意见。
In this paper, based on the theory and experimental observation of fluid mechanics and two-phase flow, the theory of solid particle suspension in two-phase flow pipe is proposed. It is considered that the solid particles in the two-phase flow pipe are affected by the radial velocity, the axial force and the radial radial force of the fluid in addition to the axial force which is usually called the floating weight and the average velocity of the fluid. On this basis, according to the equilibrium conditions of the particles under stress, the theoretic formula for calculating the particle suspension velocity of any inclined pipe in the three resistance zones of the fluid is derived. Later on the experimental platform of gas-solid two-phase flow levitation velocity, the theoretical formula was preliminarily verified. The experimental data of the suspended particle velocity of several kinds of subjects verified are close to the calculation results of the theoretical formula. At the end of this article, we put forward the opinion of analyzing the theoretical formula.