Experimental Data for Solid-Liquid Flows at Intermediate and High Stokes Numbers

The present investigation details experimental data for solid-liquid turbulent flows in the intermediate and large Stokes numbers. The experiments varied the particle size from 0.5 mm to 5 mm, at concentrations up to 2% V/V and Reynolds numbers from 200,000 to 350,000. The data include direct measurements for the three velocity components for each of the phases using Laser Doppler Velocimetry and Phase Doppler Anemometry (LDV/PDA), pressure drops, and solid volume fractions measured by direct sampling. Reynolds stresses, granular temperature, and turbulence modulation calculations are also presented, along with qualitative observations of the radial distribution of the particles.

In general, the mean liquid velocity profiles in the presence of the particles follow the single-phase profiles, while the mean solid profiles exhibit slip with a maximum relative velocity at the center. Turbulence augmentation was observed for all the experiments. In addition, the velocity fluctuations for the solid and the liquid are reduced with increasing Reynolds numbers for all particle sizes and concentrations.