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.
Characterization of the void size distribution in fluidized beds using statistics of pressure fluctuations
This paper demonstrates a correlation between in-bed pressure fluctuations and information about bubble size distribution for Geldart A and B powders.
Kinetic Model Based on a Molecular Description for Catalytic Cracking of Vacuum Gas Oil
The kinetic model in this paper is based on a molecular approach and is proposed to represent the cracking reactions of industrial feedstocks on a commercial equilibrium catalyst; given that it shows the importance of the condensation and hydrogen transfer reactions for coke formation and gasoline quality, it therefore can be used for modeling a commercial FCC riser.
Modeling of Vaporization and Cracking of Liquid Oil Injected in a Gas–Solid Riser
This paper documents how the Eulerian-Lagrangian approach can be used to simulate simultaneous evaporation and cracking reactions occurring in FCC riser reactors.
Scale-up of fluidized-bed hydrodynamics
The scale-up of fluidized beds is not an exact science. Deep fluidized beds of Group A materials can cause significant gas bypassing leading to poor gas-solids contacting.
Simulation of Heterogeneous Structure in a Circulating Fluidized-Bed Riser by Combining the Two-Fluid Model with the EMMS Approach
The simulation results in this paper support the idea that the average drag coefficient is an important factor for the two-fluid model and suggest that the EMMS approach could be used as a kind of multiscale closure law for drag coefficient in areas where the Wen Yu-Ergun hybrid is insufficient.