K. Nagata et al., Simulation of gas and particle behaviors in moving-fluidized bed with inclined baffle plates by two-fluid model, J CHEM EN J, 32(6), 1999, pp. 816-820
The particle dynamics in a gas-solid contactor with inclined baffle plates
forming a zig zag path have been numerically simulated by a two-fluid model
. In this contactor, solid particles slide down along the baffle plates and
are fluidized at the openings between the wall and the edge of the baffle
plates by the upflowing gas. Thus this structure is called a "moving-fluidi
zed bed." In the present two-fluid model, both the gas and particles are co
nsidered to be in continuum and fully interpenetrating and their behavior a
re described in terms of four hydrodynamic equations; conservation equation
s of mass and momentum for the respective phases.
The computer simulated porosity distributions in a tao dimensional moving-f
luidized bed show that the gas bubbles appear in the fluidized bed region a
t the opening for the gas velocity exceeding a critical value. The average
diameter of the bubbles and the distribution of the particle velocity along
the baffle plate have been calculated. These results are in good agreement
with the experimental results.