Comparison and evaluation of interphase momentum exchange models for simulation of the solids volume fraction in tapered fluidised beds

Experimental Study of Bubble Behavior in a Two-Dimensional Gas–Solid Tapered Fluidized Bed

“…The solid phase was divided into three phases to account for wide particle size distribution and compared with single solid-phase results. It was found that the four-phase Eulerian model performed better than the two-phase model . The bed pressure drop and bed expansion ratio were also predicted with the two-fluid model for spherical and nonspherical particles .…”

“…It was found that the four-phase Eulerian model performed better than the two-phase model. 45 The bed pressure drop and bed expansion ratio were also predicted with the two-fluid model for spherical and nonspherical particles. 48 The hydrodynamics of taper-in (increasing bed diameter with height) and taper-out (decreasing bed diameter with height) beds were compared with that of cylindrical beds using homogeneous and heterogeneous drag laws.…”

“…In addition to experimental studies, computational fluid dynamics (CFD)-based mathematical modeling has also been used to understand the hydrodynamics of tapered fluidized beds. − The multifluid Eulerian approach was used to simulate the solid volume fraction using different drag laws. The solid phase was divided into three phases to account for wide particle size distribution and compared with single solid-phase results.…”

Modelling coating quality in fluidised bed coating: Spray sub-model

“…These costs are partly related to the optimisation of the process parameters. Most of the research on fluidised beds focuses on the modelling of the hydrodynamics (Deen et al, 2006(Deen et al, , 2007Duangkhamchang et al, 2010;Limtrakul et al, 2003) and the thermodynamics (Heinrich et al, 2003;Ronsse et al, 2007a,b) of the three-phase system (solid, gas and liquid) in a fluidised bed reactor, but little research has been performed in developing a ''quality model'', i.e. a model that describes the quality of the coating process.…”

Gas permeation effect on the Two-Section Two-Zone Fluidized Bed Membrane Reactor (TS-TZFBMR) fluid dynamics: A CFD simulation study

“…On this regard, several authors have recently used the Eulerian approach to describe the tapered bed dynamics [26,27] as well as the hydrodynamic behaviour of fluidized beds with multiple jets [28] or with permselective membranes [29,30].…”