Numerical simulation and verification of a gas-solid jet fluidized bed
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Cited by (38)
Gas jet penetration in gas-solid fluidized and jetting-fluidized beds - A review
2023, Powder TechnologyDiscontinuous Galerkin solution of the convection-diffusion-reaction equations in fluidized beds
2020, Applied Numerical MathematicsExperimental study on flow characterization of a rectangular spouted bed by image processing
2019, Powder TechnologyCitation Excerpt :The jet is inherently responsible for gas bypassing and erosion of bed internals [6,7], while the fountain plays an important part in spouted bed reactor design and particle segregation [8,9]. Extensive experimental and simulation studies focusing on the jet and fountain heights have highlighted their significant impact on the industrial applications [6–15]. It's worth mentioning that the bed expansion ratio, as an important hydrodynamic characteristic reported in different kinds of gas-solids systems, has been rarely reported in spouted beds, possibly due to the intrinsic complication of gas-solids interaction and the limitation of the measurement technique.
Applying image processing methods to study hydrodynamic characteristics in a rectangular spouted bed
2018, Chemical Engineering ScienceCitation Excerpt :Techniques that have been used to investigate hydrodynamic characteristics experimentally in the published works can broadly be divided into two categories: intrusive and non-intrusive methods. The former is expedient for providing and revealing localized information and particulate behavior (He et al., 1994; Hong et al., 1996; Olazar et al., 1998), but the unquantified flow disturbance is inevitable and has always been a debatable topic. The latter is superior notably for little disturbance to the hydrodynamics being characterized, while data interpretation is more complex and relies on complicated programming and analysis (Liu et al., 2008; Sutkar et al., 2015; Zhang et al., 2017a,b).
Gas-solid fluidization of cohesive powders
2018, Chemical Engineering Research and DesignTwo-fluid modeling of cratering in a particle bed by a subsonic turbulent jet
2017, Powder TechnologyCitation Excerpt :However, for the case of a jet impinging downward onto a bed of particles, which is relevant to landing spacecraft, the motion of the particle phase was neglected and only the single-phase fluid (liquid or gas) was simulated. In particular, experimental studies demonstrated that when a turbulent, subsonic jet impinges onto a particle bed in atmospheric conditions, a crater is produced (details available elsewhere, e.g., [30–33]), which is different than the spout and fluidized beds beds that occur when the jet is at the bottom of the bed [9,21–29]. Previous computational fluid dynamics simulations were used to study the flow patterns in horizontal scour holes by modeling a jet impinging into a solid wall shaped as a crater (i.e. the crater shape was frozen in time and simulated using no-slip boundary conditions) [31,34,35].