Blar i SINTEF Open på forfatter "Cloete, Schalk"
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A multi‐domain 1D particle‐reactor model for packed bed reactor applications
Tabib, Mandar; Cloete, Schalk; Morud, John; Lysberg, Magne; Amini, Shahriar (SINTEF Proceedings;2, Chapter; Conference object; Peer reviewed, 2017)A validated multi-domain 1D particle-reactor model has been developed to simulate packed bed reactor operation. Two main components of the model are: (1) a particle model for simulating the radial distribution of chemical ... -
An assessment of the ability of computational fluid dynamic models to predict reactive gas-solid flows in a fluidized bed
Cloete, Schalk; Johansen, Stein Tore; Amini, Shahriar (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 ... -
CFD SIMULATIONS OF AN ADDITIONAL H2 COMBUSTOR FOR IMPROVING EFFICIENCY IN CHEMICAL LOOPING COMBUSTION POWER PLANTS
Scharff, Tijmen; Cloete, Schalk; Cloete, Jan Hendrik; Bastiaans, Rob (SINTEF Proceedings;6, Chapter; Peer reviewed, 2020)Chemical looping combustion (CLC) is a promising technology for hydrocarbon fuel combustion with integrated CO2 capture. The CLC process imposes almost no direct energy penalty for separating CO2, but a large indirect ... -
Comparison of particle‐resolved direct numerical simulation and 1D modelling of catalytic reactions in a packed bed
Singhal, Arpit; Cloete, Schalk; Radi, Stefan; Quinta-Ferreira, Rosa; Amini, Shahriar (SINTEF Proceedings;2, Chapter; Conference object; Peer reviewed, 2017)The work presents a comparison of catalytic gas-solid reactions in a packed bed as simulated on two widely different scales: direct numerical simulation (capable of accurately predicting transfer phenomena in and around a ... -
Comparison of phenomenological and fundamental modelling approaches for predicting fluidized bed reactor performance
Cloete, Schalk; Zaabout, Abdelghafour; Johansen, Stein Tore; Amini, Shahriar (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 ... -
Energy-Intensive Industry as a Practical and Cost-Effective Vector for Blue Hydrogen Exports – A Norwegian Case Study
Cloete, Schalk; Cloete, Jan Hendrik (SINTEF Proceedings;7, Chapter; Peer reviewed; Conference object, 2021)As political will gathers behind the ideal of rapid decarbonization, the future looks increasingly dim for oil & gas exporters. CCS offers a pathway for continued operation in the longer-term as the world decarbonizes, ... -
Evaluation of a filtered model for the simulation of large scale bubbling and turbulent fluidized beds
Cloete, Schalk; Johansen, Stein Tore; Amini, Shahriar (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 ... -
Hydrodynamic investigation into a novel IC-CLC reactor concept for power production with integrated CO2 capture
Zaabout, Abdelghafour; Cloete, Schalk; Amini, Shahriar (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 ... -
Numerical Investigations to Quantify the Effect of Horizontal Membranes on the Performance of a Fluidized Bed Reactor
Hommel, Robert; Cloete, Schalk; Amini, Shahriar (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 ... -
Performance evaluation of a complete Lagrangian KTGF approach for dilute granular flow modelling
Cloete, Schalk; Johansen, Stein Tore; Amini, Shahriar (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 ... -
The parametric sensitivity of fluidized bed reactor simulations carried out in different flow regimes
Cloete, Schalk; Cloete, Jan H.; Johansen, Stein Tore; Amini, Shahriar (SINTEF Proceedings;1, Chapter; Conference object; Peer reviewed, 2015)Fluidized bed simulations carried out within the Kinetic Theory of Granular Flows framework utilize a number of model coefficients which are strongly case dependent and difficult to determine accurately. The most important ... -
Verification of filtered two fluid models for reactive gas‐solid flows
Cloete, Jan Hendrik; Cloete, Schalk; Radl, Stefan; Amini, Shahriar (SINTEF Proceedings;2, Chapter; Peer reviewed, 2017)CFD simulations of fluidized bed reactors are generally limited to the laboratory scale because of the fine grid sizes that are required to resolve complex particle clustering phenomena. The filtered Two Fluid Model (fTFM) ...