Абстрактный

Prediction of solid volume fraction and mean density distribution isograms in slurry flow in a pipe, using ASM model

V.Daei, N.Saghatoleslami

Although many works has been conducted in the field of solid­liquid flow; however, no work has been done on the volume fraction and density distributions, velocity profiles and mean skin friction coefficient distributions in the entrance region of solid­liquid flow. Therefore, in this work a simplified 3-D algebraic slipmixture model (ASM) was adopted for the determination of volume fraction and velocity isograms in slurry flow(i.e., silica sand­water) in a horizontal pipe. In order to obtain this objective, an assumption of fully developed flowwasmade and the RNG k­ï¥ model for the turbulent flowwith the algebraic slip mixture model was utilised. To solve the flow governing equations and discretize the computation domain, an unstructured (blockstructured) with non-uniformgrid was chosen using a control volume finite difference method (CVFDM). In order to validate the numericalmean pressure gradients obtained in this study, it was compared with the experimental data available in the literature. The result of this study reveals that there exist a good compatability between the present findings and the experimental data available in the literature.