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Expanded fluidization behavior in liquid–solid mini-fluidized beds (MFBs) was experimentally investigated using visual measurements. Wall effects in the liquid–solid MFBs were identified and explained. The measured incipient/minimum fluidization liquid velocity (umf) in the MFBs was 1.67 to 5.25 times higher than that calculated using the Ergun equation when the ratio of solid particle diameter to...
Until now, the onset velocity of circulating fluidization in liquid–solid fluidized beds has been defined by the turning point of the time required to empty a bed of particles as a function of the superficial liquid velocity, and is reported to be only dependent on the liquid and particle properties. This study presents a new approach to calculate the onset velocity using CFD–DEM simulation of the...
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