Section Days abstract book 2010.indd - RUB Research School ...

NSE_05
SIMULATION OF FLUIDIZED BEDS
Hold J., Wirtz S. and Scherer V.
LEAT, Department of Energy Plant Technology
Faculty of Mechanical Engineering
Ruhr-Universität Bochum, 44780 Bochum, Germany
email: hold@leat.rub.de
Fluidized beds are used for many chemical engineering processes as granulation, drying or
coating and for energy technology applications like combustion processes. Experiments are
very time-consuming and cost-intensive; furthermore the interior of the fluidized beds is
difficult to access. Different simulation methods are therefore available for modeling of the
fluid and particle dynamics in these systems. On the one hand the coupled CFD-/DEMapproach
can be used. The mechanical behaviour of each particle is described via the Newton
and Euler equations using the DEM-method and CFD is used for the fluid dynamics. On the
other hand fluidized beds can be calculated via Euler-Euler-simulations based on the kinetic
theory of granular flow in a continuum description. An investigation of mixing of different
solids in fluidized beds through an experimental setup, and simulations based on Euler/Euler
and CFD/DEM is ongoing and initial results will be presented.