Using the refractive index matched technique to study the flow properties of slurries.

摘要

In this study, Laser Doppler Velocimetry (LDV) is used to measure liquid and solid axial velocity profiles for slurries with solids loadings as great as 25 volume percent. Axial velocity profiles were measured during flow through straight horizontal pipe and through concentric contractions. These results are presented and compared. These same solid-liquid mixtures have been rheologically characterized. Yield stresses and shear thinning behavior have been observed in mixtures with solids loadings of 15 volume percent or greater. The theoretical analyses of Hanks and Dadia and Hanks and Ricks were applied to the flow data though the constant-diameter pipe where appropriate. The effect of the rheological properties on the flow properties through horizontal, constant-diameter pipe and concentric contraction geometry are discussed. (ERA citation 17:027461)