Analysis and Simulation of Flow Field in the Ultrasonic Auto Backwash Filter

Abstract:

Flow field in the filter is simulated by using Computational Fluid Dynamics. At the same time, pressure and velocity field distribution in the filter are analyzed. The maximum differential pressure and filtration velocity of filter column are all decreasing with column height increasing which means that there are stagnant water zones on the top of filter column. This phenomenon not only has an effect on filtration efficiency, but also can lead cavitation erosion. So the structure of filer must be improved. The change of pressure and velocity on two sides of filtering material are caused by flow resistance of material with many holes. All theses analysis results of velocity and pressure field can be the basic theory for the design of high efficiency filter.

• Periodical: Advanced Materials Research (Volumes 591-593)
• Pages: 845-849
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.591-593.845
• Online since: November 2012
• Authors: Jun Xie, Li Jun Shan
• Keywords: Computational Fluid Dynamics (CFD), Flow Field, Numerical Simulation, Solid-Liquid Separation, Ultrasonic Filter

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