Simulation of object motion in a bubbling fluidized bed using a Monte Carlo method Articles uri icon

publication date

  • June 2013

start page

  • 26

end page

  • 32

volume

  • 96

international standard serial number (ISSN)

  • 0009-2509

electronic international standard serial number (EISSN)

  • 1873-4405

abstract

  • The motion of a large neutrally-buoyant object immersed in a 2D bubbling fluidized bed was simulated using a Monte Carlo method. The object vertical trajectory within the bed was simulated for a range of
    dimensionless gas velocities using a simple 1D model. The main
    characteristics of the object motion were obtained from the trajectory
    simulation and compared with experimental evidence giving good results.
    On a second step, the time scale of the motion is introduced in the
    simulated data by means of well-known 2D correlations for the bubble and
    dense phase velocity. The circulation time of an object (from the
    instant when it leaves the freeboard and sinks in the dense phase till
    the moment it reappears back in the surface) was then obtained and
    compared with experimental data, showing a general agreement. Finally,
    an extrapolation for a 3D fluidized bed was made following a similar
    procedure.

keywords

  • monte carlo; object motion; gas; fluidization; bubbling bed; circulation time; sinking and rising velocity