Bubble characterization in a fluidized bed by means of optical probes
The objective of this paper is to show and discuss the applicability of optical probes to measure the bubble size and bubble rise velocity in fluidized beds.
Downer Reactor Flow Measurements using CREC-GS-Optiprobes
This study describes the potential intrusive effects of CREC-GS-Optiprobes on the flow pattern in gas–solid downflow units by calculating granular flows and their interactions with the CREC-GS-Optiprobes using a CPFD (Computational Particle Fluid Dynamic) numerical scheme in three dimensions.
Advanced Computational Modeling of Proppant Settling in Water Fractures for Shale Gas Production
This paper by Kuochen Tsai, Ernesto Rafael Fonseca, Sujatha Degaleesan, and Ed Lake from Shell shows advances in the numerical simulation of proppant transport in hydraulically stimulated fractures for oil and gas production.
Reverse core-annular flow of Geldart Group B particles in risers
Experiments involving monodisperse Geldart Group B particles were carried out in a pilot-scale riser of a circulating fluidized bed, and several combinations of superficial gas velocity, solid flux, average particle diameter, and particle material density were investigated
Cluster characteristics of continuous size distributions and binary mixtures of Group B particles in dilute riser flow
Gas–solids circulating fluidized bed (CFB) experiments have been carried out, with a focus on understanding the impact of polydispersity on cluster characteristics in a dilute riser.
Application of the Particle in Cell Approach for the Simulation of Bubbling Fluidized Beds of Geldart A Particles
This paper investigates the capability of the Multiphase Particle in Cell (MP-PIC) approach for modeling a bubbling fluidized bed of Geldart A particles.
Cluster characteristics of Geldart group B particles in a pilot-scale CFB riser. II. Polydisperse systems
Experiments with a focus on the impact of polydispersity on clustering characteristics (namely, appearance probability, duration, and frequency) of Geldart Group B particles in a circulating fluidized bed riser have been performed.
Cluster characteristics of Geldart Group B particles in a pilot-scale CFB riser. I. Monodisperse systems
Experiments in a circulating fluidized bed (CFB) riser with Geldart Group B particles have been carried out with an emphasis on cluster characterization.
CPFD Simulation of a Fast Fluidized Bed Steam Coal Gasifier Feeding Section
In order to create fast fluidized beds designed to maximize coal gasification yields and designed to provide an optimum syngas composition with minimum operational upsets, a comprehensive model for steam gasification is created using CPFD methods.
Impact of material property and operating conditions on mass flux profiles of monodisperse and polydisperse Group B particles in a CFB riser
In this research experiments directed at understanding local mass flux behavior of Geldart Group B materials in the riser of a gas-solids circulating fluidized bed (CFB) have been carried out.