TURBULENT SOLID-LIQUID TWO-PHASE FLOW SIMULATION WITH TURBULENCE INTENSITY AND TIME SCALE MODEL

摘要

Two-dimensional simulation of turbulent solid-liquid flow is carried out. The modeling is established for a two- phase flow of solid particles in a vertical pipe water flow. Governing equations of flow and turbulence field are solved in an Eulerian-Lagrangian approach by the use of k - τ (turbulence time scale) model and trajectories of the particles are obtained using the Lagrangian method with a deterministic inter-particle collision model. Comparison between the results of the model for mean and r.m.s velocities of the liquid and solid phase with the experimental results shows a good agreement. The effect of variation of particle density and concentration are studied.