Numerical investigation of particle size segregation in piling, hopper filling and discharging processes
thesisposted on 12.06.2018 by TENGFANG ZHANG
In order to distinguish essays and pre-prints from academic theses, we have a separate category. These are often much longer text based documents than a paper.
This thesis examines the size segregation phenomenon in the piling, hopper filling and discharging processes, and the application in a paul-wurth hopper by discrete element method. It clarifies the underlying mechanisms of segregation by the microscopic parameters, including velocity, porosity and forces obtained from the simulation. These four processes are analysed comprehensively. The effects of material property, moisture content, size ratio and volume fraction are investigated. At last, several correlations are proposed to reveal the structural characteristics.