Simulations of industrial machinery

For the simulation of industrial machinery basic and advanced models are combined. Additionally it is often necessary to develop new code for the models, which are not implemented in the underlying software libraries. In close collaboration with experienced partners from the industry, which know their machines by heart, influencial parameters are analysed and implemented in the simulations. Physically correct simulation results lead to an optimisation of the design of the particular machine.

 

Simulation of a fluidized bed

The following video is made from results of a study of a bubbling fluidized bed. It shows the start up of a fluidized bed with air spouts delivering gas with differing temperature. The geometry was modeled after a laboratory fluidized bed that was described by the Finnish scientist Timo Niemi in 2013.


 

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Details:

The simulation is based on:
Timo Niemi and Juho Peltola: Gas-Solid Bubbling Fluidized Bed Simulations with compressibleTwoPhaseEulerFoam, 8th OpenFOAM Workshop Jeju, Korea, 11.-14. June 2013, VTT Technical Research Centre of Finland

Geometry: 0.9 x 2.0 x 0.015 m
(fully 3D discretised with influence of front- and back-walls)

Gas: Air
T_init=298K, cp=1007 J/kgK, rho=f(T), d_p=3e-4 mm (constant, uniform), T_in (hot gas inlets)=1000K, U_in=3.2 m/s (uniform)

Solid: Sand
T_init=298K, initial bed height h = 0.6 m, cp=830 J/kgK, rho=2480 kg/m^3, d_p=0.656 mm (constant, uniform)