Coupling of DEM and CFD - Simulation and Experiment
Sprache des Vortragstitels:
DANSIS DEM Meeting 2009
Sprache des Tagungstitel:
First, an overview over DEM as an engineering tool is given and simulation examples are shown, such as particle charging and hopper discharge. Then we report on the synthesis of the Discrete Element Method (DEM) modelling the behaviour of granular materials and a finite volume model for the continuous interstitial fluid using the CFD-method (Computational Fluid Dynamics).
First, particle rope formation and dispersion during pneumatic conveying is focused. Next, particle discharge from a hopper-standpipe configuration is addressed. Furthermore, we discuss the charging of glass beads into a test facility. Finally, a fluidized bed configuration is examined.
We thus show that this synthesis leads to a very versatile tool, applicable for different kind of regimes: For high solids fraction (fluidized bed, hopper discharge) and low solids fraction (trajectory segregation during charging, pneumatic conveying) and for One-Way-Coupling where the fluid flow is induced by particle motion (hopper discharge, trajectory segregation during charging) as well as for One-Way-Coupling where the particle motion is induced by fluid flow (pneumatic conveying). The strongly coupled case of the fluidized bed, where strong interaction between particle motion and fluid flow take place – thus Two-Way-Coupling – can also be addressed.
Sprache der Kurzfassung:
Hauptvortrag / Eingeladener Vortrag auf einer Tagung