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这篇文章阐述了关于固液流紊流特性的最重要的研究成果:沿水流断面的平均纵向流速和浓度分布,固液分量的流速脉动和相应的动量。这些研究使我们得出由于水中固体颗粒的存在使水流产生不同紊动程度的一些重要结论。提出了在输送不同大小的沙子的条件下,由于摩阻损失形成的压力坡降的计算方法。并提出了在同一条件下确定沙粒开始沉降的流速(即临界流速)的关系式。
This article describes the most important research results on the turbulent characteristics of solid-liquid flow: the average longitudinal flow velocity and concentration distribution along the flow cross-section, the flow velocity pulsation of the solid-liquid flow and the corresponding momentum. These studies lead us to draw some important conclusions as to the degree of turbulence of water flow due to the presence of solid particles in water. The method of calculating the pressure gradient caused by the friction loss is proposed under the condition of different sizes of sand transported. The relationship between the velocity at which the sand starts to settle (ie, the critical flow rate) under the same conditions is proposed.