The Lifting Efficiency of Coarse Particles in Vertical Pipes

Abstract:

A numerical method has been developed to analyze the solid-liquid two-phase flow with coarse particles in vertical pipes. Based on the numerical study, a concept of lifting efficiency has been suggested to describe the efficiency of lifting solid particles by the moving liquid. The lifting efficiency can be defined as, where v_s is the average velocity of the solid particles and v_l is the average speed of the liquid. It was found that when the liquid speed is lower than 3m/s, the lifting efficiency is increased when the liquid speed is increased. On the other hand if the liquid speed is more than 3m/s, the lifting efficiency will decrease if the liquid speed increases. It was also found that the speed of the particles will decrease if pipe vibration frequency is increased. However the lifting efficiency remains unchanged compared with the stationary pipes.

• Periodical: Applied Mechanics and Materials (Volumes 66-68)
• Pages: 1219-1224
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.66-68.1219
• Online since: July 2011
• Authors: Hua Chen Pan, Xiao Qing Tian, Lei Wu
• Keywords: Coarse Particle, Lifting Efficiency, Stationary Pipes, Vibrating Pipes

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