Simulation of the Flow Conditions in Different Types of Bar Structures of Disc Refiner

摘要

1 IntroductionDisc refiners have been widely used in the pulping and papermaking industry. The refining disc is a core component of a disc refiner. There have been extensive researches on refining discs including materials, manufacturing process, principles of the structure failure, arrangement of the bars and grooves, and energy consumption. The design and structure of a refining disc will directly affect the beating quality and energy efficiency of the disc refiner[1-4].In recent years, Computational Fluid Dynamics (CFD) has become a decisive method for studying fluid motion and understanding flow regularity. Therefore, the CFD method has provided an efficient way of simulating and analyzing process fluid machinery. Research in CFD simulations on disc refiners of pulping process started late in China[5]. With the development of computer numerical simulation technology, the CFD method increasingly shows the advantages of studying the pulping process of the disc refiner.