DEM simulation of particle attrition in dilute-phase pneumatic conveying

作者：Brosh Tamir; Kalman Haim^*; Levy Avi

来源：Granular Matter, 2011, 13(2): 175-181.

DOI：10.1007/s10035-010-0201-z

• DEM
• Pneumatic conveying
• Particle breakage
• Selection function
• Breakage function
• Fatigue function

Three dimensional numerical simulations of particles motion in a given geometry pneumatic conveying system are conducted in order to obtain a better understanding of the attrition process. A new and innovative procedure of implementing empirical comminution functions (Kalman et al. in Gran Mat 11:253-266, 2009) into DEM-CFD simulations was used and modified. The comminution functions include: initial strength distribution, selection function, breakage function, equivalence function and fatigue function. The implementation involves converting the probability comminution functions into individual particle properties by a random method and then converting the velocity dependent comminution functions into strength-dependent ones. The predictions of the numerical simulations are used to analyze the flow field characteristics and the size reduction process.

• 出版日期2011-4