Blar i SINTEF Open på emneord "Fluidized bed"
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A Lagrangian‐Eulerian hybrid model for the simulation of direct reduction of iron ore in fluidized beds
(SINTEF Proceedings;2, Chapter, 2017)Fluidized bed and moving bed reactors are one of the most important technologies in several branches of process industry. Especially, it is known since decades that iron can be reduced rapidly and efficiently from iron ... -
An assessment of the ability of computational fluid dynamic models to predict reactive gas-solid flows in a fluidized bed
(Peer reviewed; Journal article, 2012)Fine grid, two dimensional simulations of reactive gas–solid flows occurring in a fluidized bed reactor were carried out using the Eulerian multi-fluid kinetic theory of granular flow (KTGF) approach in the commercial flow ... -
Comparing Euler-Euler and Euler-Lagrange based modelling approaches for gas-particle flows
(SINTEF Proceedings;1, Chapter, 2015)Comparative assessment of Euler-Euler and Euler-Lagrange modelling approaches for gas-particle flows is performed by comparing their predictions against experimental data of two fluidization challenge problems put forth ... -
Effect of lift force on dense gas‐fluidized beds of non‐spherical particles
(SINTEF Proceedings;2, Chapter, 2017)In industry we encounter many processes that rely on equipment in which particles are suspended by a gas flow, such as pneumatic conveyors, CFB gasifiers, combustors and fluidized bed reactors. In numerical models of these ... -
Evaluation of a filtered model for the simulation of large scale bubbling and turbulent fluidized beds
(Peer reviewed; Journal article, 2013)Full 3D flow simulations of lab and industrial scale dense fluidized beds were carried out using a filtered Eulerian-Eulerian approach. Filtered closures for interphase momentum exchange, solids stresses and additional ... -
The generality of the standard 2D TFM approach in predicting bubbling fluidized bed hydrodynamics
(Peer reviewed; Journal article, 2013)Hydrodynamic simulations of a pseudo-2D bubbling fluidized bed were carried out and compared to experiments conducted over a wide range of flow conditions. The primary purpose of this study was to assess the generality of ... -
Grid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Effect of particle size
(Peer reviewed; Journal article, 2014)It is well known that particle size has a significant influence on the grid independence behaviour of fluidized bed reactor simulations carried out using the Two Fluid Model (TFM) approach. The general rule of thumb states ... -
Hydrodynamic investigation into a novel IC-CLC reactor concept for power production with integrated CO2 capture
(SINTEF Proceedings;1, Chapter; Conference object; Peer reviewed, 2015)This paper presents an investigation of the hydrodynamics of a new Chemical Looping Combustion (CLC) reactor concept for power generation with integrated CO2 capture. This concept consists of an internal circulating fluidized ... -
Improved multi-stage cross-flow fluidized bed classifier
(Peer reviewed; Journal article, 2019)In the present work, improvements to a novel fluidized bed solids classification system previously published by Jayarathna et al. are discussed (Jayarathna et al., 2018 [1]). The system is designed for a high temperature ... -
Mass transfer phenomena in fluidized beds with horizontally immersed membranes
(SINTEF Proceedings;2, Chapter, 2017)Mass transfer phenomena in fluidized bed reactors with horizontally immersed membranes have been investigated using a verified and validated Two-Fluid Model. A binary hydrogen-nitrogen mixture was injected into the fluidized ... -
Numerical Investigations to Quantify the Effect of Horizontal Membranes on the Performance of a Fluidized Bed Reactor
(Peer reviewed; Journal article, 2012)Reactive simulations of gas-solid flows occurring in fluidized beds with horizontal membrane insertion were carried out using computational fluid dynamics based on the kinetic theory of granular flows. The effect of altering ... -
On the choice of closure complexity in anisotropic drag closures for filtered Two Fluid Models
(Journal article; Peer reviewed, 2019)Filtered Two Fluid Models (fTFMs) aim to enable accurate industrial-scale simulations of fluidized beds by means of closures accounting for the effects of bubbles and clusters. The present study aims to improve anisotropic ...