Affiliation:
1. Technical University of Darmstadt Institute for Energy Systems and Technology Otto-Berndt-Str. 2 64287 Darmstadt Germany
2. Kermanshah University of Technology Department of Chemical Engineering Faculty of Energy Imam Khomeini Highway 6715685420 Kermanshah Iran
Abstract
AbstractThe efficiency and accuracy of the Euler‐Lagrange/discrete element method model were investigated. Accordingly, the stiffness coefficient and fluid time step were changed for different particle numbers and diameters. To derive the optimum parameters for simulations, the obtained results were compared with the measurements. According to the results, the application of higher stiffness coefficients improves the simulation accuracy slightly, however, the average computing time increases exponentially. For time intervals larger than 5 ms, the results indicated that the average computation time is independent of the applied fluid time step, while the simulation accuracy decreases extremely by increasing the size of the fluid time step. Nevertheless, using time steps smaller than 5 ms leads to negligible improvements in the simulation accuracy, though to an exponential rise in the average computing time.
Funder
Deutsche Forschungsgemeinschaft
Technische Universität Darmstadt
Subject
Industrial and Manufacturing Engineering,General Chemical Engineering,General Chemistry