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重力选矿中的分选过程多在近壁面进行，由于近壁面的湍流边界层存在着很大的速度梯度和浓度梯度；固粒在穿过湍流边界层时的运动和穿过主流区域，在运动机理上存在着根本性的不同，应该分别加以考虑此外，固粒在液体湍流边界层中的受力分析与在气体边界层中也大不同，须另加研究本文讨论液体湍流边界层的速度分布，对固粒穿过液体湍流边界层的受力进行分析，最后计算固粒穿过液体湍流边界层的轨迹分析中略去固粒间相互作用的影响及固粒对湍流边界层的影响，即只考虑稀相的液固两相湍流边界层的特性
Gravity beneficiation in the sorting process mostly in the near wall, due to the near wall turbulent boundary layer there is a great velocity gradient and concentration gradient; solid particles in the turbulent boundary layer through the movement and through the mainstream area in the movement Mechanisms are fundamentally different and should be considered separately. In addition, the force analysis of solid particles in the turbulent boundary layer of liquid is also quite different from that of the gas boundary layer, and additional research is needed. Velocity distribution of solid particles through the liquid turbulent boundary layer of the force analysis, and finally calculate the solid particles through the liquid turbulent boundary layer trajectory Analysis of the interaction between the removal of solid particles and solid particles on the turbulent boundary layer , That is, only consider the characteristics of dilute phase liquid-solid two-phase turbulent boundary layer