Effect of internal on phase holdups of a three-phase fluidized bed

Wall-to-bed mass transfer in three-phase fluidized beds in the absence and presence of a composite promoter

“…The equivalent diameter was obtained from the equation proposed by Ramesh et al [12]. The axial velocities of liquid and gas were computed based on available flow area using the method described by Ramesh et al [12]. The gas holdup thus obtained was found to be in good agreement with the equation of Soung [12,13].…”

“…The liquid holdup, ε L was thus obtained as 1 − ε s − ε g . The equivalent diameter was obtained from the equation proposed by Ramesh et al [12]. The axial velocities of liquid and gas were computed based on available flow area using the method described by Ramesh et al [12].…”

Experimental and CFD Investigation the Effect of Solid Particle Height in Water-Solid Flow in Fluidized Bed Column

“…Leckner et al [8] have studied the pressure fluctuations in a gas -solid fluidized bed by mean of a simple model of the principal frequency of the pressure fluctuations. Ramesh et al [9] have obtained the gas holdup from the pressure drop and investigate the effect of composite promoter presence on the pressure drop for three phase fluidized bed. In this work, the bed pressure influenced by increasing water flow rate and the solid static height has investigated, the experimental result has compared with a result obtained by ANSYS Fluent 15.0 and a good agreement has been found.…”