Blar i SINTEF Industri på tidsskrift "Powder Technology"
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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 ... -
Comparison of phenomenological and fundamental modelling approaches for predicting fluidized bed reactor performance
(Peer reviewed; Journal article, 2012)Two approaches to modelling fluidized bed reactors were evaluated and compared in this work: a phenomenological 1D approach based on empirical closures and a more fundamental 2D approach based on computational fluid dynamics ... -
The effect of frictional pressure, geometry and wall friction on the modelling of a pseudo-2D bubbling fluidised bed reactor
(Peer reviewed; Journal article, 2015)The two fluid model (TFM) closed by the kinetic theory of granular flows (KTGF) has been developed to a high level of maturity over the past three decades. However, significant uncertainties still remain about the influence ... -
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: Detailed parametric study
(Peer reviewed; Journal article, 2016)This short communication builds on previous work on the grid independence behaviour of the Two Fluid Model in reactive bubbling fluidized bed simulations. Regarding hydrodynamic grid independence behaviour (the numerical ... -
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 ... -
Hydrogen production by water splitting using gas switching technology
(Peer reviewed; Journal article, 2020)This study demonstrates a novel “Gas Switching Water Splitting (GSWS)” technology for production of pure H2with integrated CO2capture. The reactor concept is based on the chemical looping technology where an oxygen carrier ... -
Hydrogen production by water splitting using gas switching technology
(Peer reviewed; Journal article, 2020)This study demonstrates a novel “Gas Switching Water Splitting (GSWS)” technology for production of pure H2 with integrated CO2 capture. The reactor concept is based on the chemical looping technology where an oxygen carrier ... -
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 ... -
Investigation into the effect of simulating a 3D cylindrical fluidized bed reactor on a 2D plane
(Peer reviewed; Journal article, 2013)2D planar simulations of 3D cylindrical fluidized bed reactors are routinely carried out in order to reduce computational costs. The error involved in this simplification is largely unknown, however, and this study was ... -
Monitoring of scale formation in a pneumatic conveying system operating in a metal production plant
(Journal article; Peer reviewed, 2019)Monitoring of scale progression in a pneumatic conveying system operating in a metal production plant was conducted during a five-month long monitoring period. A combination of an acoustic monitoring method and a laser ... -
On the validity of the two-fluid-KTGF approach for dense gravity-driven granular flows as implemented in ANSYS Fluent R17.2
(Peer reviewed; Journal article, 2020)( Engelsk ) As a subproblem of solid transport in wellbores, we have investigated the cliff collapse problem by means of the Two-Fluid-Model (TFM), where the rheological description of the second phase (sand) is governed ... -
Performance evaluation of a complete Lagrangian KTGF approach for dilute granular flow modelling
(Peer reviewed; Journal article, 2012)Finely resolved gas–solid flow simulations were carried out using an improved Lagrangian method known as the dense discrete phase model (DDPM). The DDPM differs from the traditional Eulerian two fluid model (TFM) approach ...