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通过分析粒径／管径比、紊流强度及颗粒群浓度对垂直固液两相流中大颗粒的阻力系数及颗粒沉降末速度的影响，得出在一定条件下颗粒的临界雷诺数提前，阻力系数突降０．１，使颗粒的沉降末速度急增．并在此基础上，给出了可用于工业试验的最小水力提升水流速度．
By analyzing the influence of particle size / diameter ratio, turbulence intensity and particle group concentration on the drag coefficient of large particles and the particle settling velocity in vertical solid-liquid two-phase flow, the critical Reynolds number of particles under certain conditions is advanced, The drag coefficient drops by 0.1, causing the particle settling rate to increase sharply. Based on this, the minimum hydraulic lift velocity that can be used in industrial experiments is given.