Liquid Injection into Fluidized Beds
Snider, O’Rourke, and Zhao present a unified model for collisional exchange of mass, momentum, and energy between particles in gas/liquid/solid fluidized beds.
Effect of Baffles on Jet Streaming in Deep Fluidized Beds of Group A Particles
Commercial circulating fluidized bed (CFB) units require efficient operation of the riser and the solids return leg. The objective of this work was to study how horizontal baffles can be used to reduce or eliminate gas bypassing in deep beds.
Small Particles Cluster Formation in Fluidized Beds and its Effect on Entrainment
Three cases are presented on the entrainment of various materials from fluidized beds in which agglomerated clumps of particles affected the measured entrainment rates. Evidence suggests that fine particles in many materials may be clumping together – resulting in a reduced entrainment rate.
Understanding Streaming Flow in Deep Fluidized Beds
Gas streaming is the severe bypassing of gas that can occur in deep, bubbling fluidized beds. Gas bypassing consists of a large jet that precesses around the walls of the fluidized bed. Details of possible mechanisms and possible techniques for detecting gas-bypassing are presented in this report.
A New Blended Acceleration Model for the Particle Contact Forces Induced by an Interstitial Fluid in Dense Particle/Fluid Flows
The development of the multi-phase flow algorithm MIPSA (Multi-InterPhase Slip-Algorithm) within a two-dimensional Computational Fluid Dynamics (CFD) code called CASCADE is summarized with its application to the modeling of lean phase circulating fluidized beds
Jet Hydrodynamics Around Fluidized Bed Spargers
In this publication, typical commercial stripper operating problems are pointed out, and methods to diagnose the problems are identified.
Electrical Capacitance Volume Tomography
This paper documents the development of electrical capacitance volume tomography.
Three Fundamental Granular Flow Experiments and CPFD Predictions
In this paper by Dale M. Snider, granular flow of three granular flow experiments is predicted by a CPFD numerical scheme in three dimension using the true particle size distribution.
Drag Force of Intermediate Reynolds Number Flow Past Mono- and Bidisperse Arrays of Spheres
Extensive lattice-Boltzmann simulations were performed to obtain the drag force for random arrays of monodisperse and bidisperse spheres.
Understanding the Gas Residence Times in Reverse Flow Cyclones
Cyclones have been in operation for over one hundred years. Arena-Flow simulations were preformed to understand the gas hydrodynamics in a commercial scale cyclone and its implication towards both gas distribution and residence time.