## Bubbling fluidized bed test case

based on
* Khawaja, H.A., J. Comput. Multiph. Flows 7(4), 227-240 (2015)
* Khawaja, H.A. and Moatamedi, M., Multiphysics Modelling of Fluid-Particulate Systems, 51-74 (2020)

#### Case B

parameter | value
----------|------
box width | 0.0432 m
box height | 0.1248 m
box thickness | 0.01 m
number of fluid cells | 12 x 26 x 1
number of particles | 9240
fluid density | 1.13 kg/m3
DEM time step size | 2.5e-6 s
particle diameter | 1.2 mm
particle density | 1000 kg/m3
Youngs modulus | 1.2e8 Pa
Poisson ratio | 0.3
coeff. of restitution | 0.986
coeff. of friction | 0.1
unfluidized bed height | 0.03 m
bed expansion observed in experiment | 0.05 m