Search Results - "Johansen, Stein Tore"

Modelling of dispersed oil/water flow in a near-horizontal pipe by Kjølaas, Jørn, Schümann, Heiner, Gonzalez, Diana, Tore Johansen, Stein

“…•A gravity-diffusion model for predicting water droplet concentration profiles in oil/water pipe flow was implemented.•In the model, the droplet size…”
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Investigation into the effect of simulating a 3D cylindrical fluidized bed reactor on a 2D plane by Cloete, Schalk, Johansen, Stein Tore, Amini, Shahriar

“…2D planar simulations of 3D cylindrical fluidized bed reactors are routinely carried out in order to reduce computational costs. The error involved in this…”
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Evaluation of a filtered model for the simulation of large scale bubbling and turbulent fluidized beds by Cloete, Schalk, Johansen, Stein Tore, Amini, Shahriar

“…Full 3D flow simulations of lab and industrial scale dense fluidized beds were carried out using a filtered Eulerian–Eulerian approach. Filtered closures for…”
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An assessment of the ability of computational fluid dynamic models to predict reactive gas–solid flows in a fluidized bed by Cloete, Schalk, Johansen, Stein Tore, Amini, Shahriar

“…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…”
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The generality of the standard 2D TFM approach in predicting bubbling fluidized bed hydrodynamics by Cloete, Schalk, Zaabout, Abdelghafour, Johansen, Stein Tore, van Sint Annaland, Martin, Gallucci, Fausto, Amini, Shahriar

“…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…”
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Modeling Water Droplet Freezing and Collision with a Solid Surface by Shayunusov, Doston, Eskin, Dmitry, Balakin, Boris V., Chugunov, Svyatoslav, Johansen, Stein Tore, Akhatov, Iskander

“…Water droplets released from the sea surface represent one of the major causes of ice accretion on marine vessels. A one-dimensional model of the freezing of a…”
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Experimental Demonstration of a Novel Gas Switching Combustion Reactor for Power Production with Integrated CO2 Capture by Zaabout, Abdelghafour, Cloete, Schalk, Johansen, Stein Tore, van Sint Annaland, Martin, Gallucci, Fausto, Amini, Shahriar

“…This paper experimentally demonstrates the feasibility of a novel gas switching combustion (GSC) reactor as an alternative to the traditional chemical looping…”
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Rheological Characterization of Polyanionic Cellulose Solutions with Application to Drilling Fluids and Cuttings Transport Modeling by Busch Alexander, Myrseth Velaug, Khatibi Milad, Skjetne Paal, Hovda Sigve, Johansen Stein Tore

“…In petroleum drilling, aqueous Polyanionic Cellulose solutions (PAC) are often used as a drilling fluid model system in experimental laboratory studies to…”
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Hybrid and cognitive digital twins for the process industry by Johansen, Stein Tore, Unal, Perin, Albayrak, Özlem, Ikonen, Enso, Linnestad, Kasper J., Jawahery, Sudi, Srivastava, Akhilesh K., Løvfall, Bjørn Tore

“…In a Europe that is undergoing digital transformation, the COGNITWIN project is contributing to accelerate the transformation and introduce Industry 4.0 to the…”
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Modelling the Tapping Process in Submerged Arc Furnaces Used in High Silicon Alloys Production by Kadkhodabeigi, Mehdi, Tveit, Halvard, Johansen, Stein Tore

“…The tapping process is an important step in the silicon and ferrosilicon production process. Tapping is simply how to transfer the melt from the furnace into…”
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Comparison of phenomenological and fundamental modelling approaches for predicting fluidized bed reactor performance by Cloete, Schalk, Zaabout, Abdelghafour, Johansen, Stein Tore, Amini, Shahriar

“…Two approaches to modelling fluidized bed reactors were evaluated and compared in this work: a phenomenological 1D approach based on empirical closures and a…”
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On the validity of the two-fluid-KTGF approach for dense gravity-driven granular flows as implemented in ANSYS Fluent R17.2 by Busch, Alexander, Johansen, Stein Tore

“…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…”
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Grid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Effect of particle size by Cloete, Schalk, Johansen, Stein Tore, Amini, Shahriar

“…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…”
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An Eulerian-Lagrangian CFD study of a particle settling in an orthogonal shear flow of a shear-thinning, mildly viscoelastic fluid by Busch, Alexander, Johansen, Stein Tore

“…For improving CFD models of particle transport in wellbore flows, i.e. cuttings transport, we have extended the Lagrangian Discrete-Particle-Model model of the…”
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Grid independence behaviour of fluidized bed reactor simulations using the Two Fluid Model: Detailed parametric study by Cloete, Schalk, Johansen, Stein Tore, Amini, Shahriar

“…This short communication builds on previous work on the grid independence behaviour of the Two Fluid Model in reactive bubbling fluidized bed simulations…”
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Performance evaluation of a complete Lagrangian KTGF approach for dilute granular flow modelling by Cloete, Schalk, Johansen, Stein Tore, Amini, Shahriar

“…Finely resolved gas–solid flow simulations were carried out using an improved Lagrangian method known as the dense discrete phase model (DDPM). The DDPM…”
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On the turbulence modelling of bubble plumes by Pan, Qingqing, Johansen, Stein Tore, Olsen, Jan Erik, Reed, Mark, Sætran, Lars Roar

“…•An enhanced turbulence model has been developed and validated, which is generally applicable to bubble plumes.•The model accounts for the extra turbulence…”
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VLES turbulence model for an Eulerian–Lagrangian modeling concept for bubble plumes by Olsen, Jan Erik, Skjetne, Paal, Johansen, Stein Tore

“…•A VLES turbulence model is implemented in a model for large scale bubble plumes.•The VLES model inherently captures the large scale turbulence.•The VLES model…”
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Cuttings transport: On the effect of drill pipe rotation and lateral motion on the cuttings bed by Busch, Alexander, Johansen, Stein Tore

“…Drill pipe rotation is considered a relevant factor for cuttings transport and hole cleaning. However, in the term “rotation” is often used as a moniker for…”
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Crude oil characterization with a new dynamic emulsion stability technique by Patil, Amit, Arnesen, Kamilla, Holte, Anja, Farooq, Umer, Brunsvik, Anders, Størseth, Trond, Johansen, Stein Tore

“…[Display omitted] •Crude oil-water emulsion stability in a stirred tank cell.•Inertial and viscous subrange droplet stability study with dispersion density…”
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