Jon Arne Bakken

CFD MODELING OF A PLASMA REACTOR FOR THE PRODUCTION OF NANO-SIZED CARBON MATERIALS

Benjamin Ravary, Jon Arne Bakken, José González‐Aguilar, Laurent Fulcheri

A new patented process can produce nano-sized carbon materials, in particular fullerenes, by treatment of carbon powders in a 3-phase AC plasma reactor. Computational Fluid Dynamics (CFD) of the reactor for this particular application has been carried out. A simplified model of …

High-Power AC Arcs in Metallurgical Furnaces

Guðrún Sævarsdóttir, Jon Arne Bakken, V.G. Sevastyanenko, Liping Gu

A typical three-phase submerged-arc furnace for production of silicon metal and ferrosilicon has electrode currents ∼100 kA, phase voltages ∼100 V and total furnace power ∼10 - 60 MW. The arcs bum in gas filled cavities or "craters", where the main atomic …

IMPROVED CHANNEL ARC MODEL FOR HIGH-CURRENT AC ARCS

Guðrún Sævarsdóttir, M. Thoresen, Jon Arne Bakken

The Channel Arc Model (CAM) for simulation of high-current (~100 kA) electric arcs in submerged arc furnaces has been improved and implemented in a complete three-phase circuit model, describing the furnace circuit. A Cathode Sub-Model (CSM) for high-current AC, as well as …

MODELLING OF INDUSTRIAL AC ARCS

Hilde Løken Larsen, Jon Arne Bakken

A simple Channel Arc Model and a more sophisticated Magnetofluiddynamic Model have been developed to simulate high-current AC arcs with emphasis on the arc as a non-linear circuit element and as a heat source for the industrial process.

Electromagnetic Priming of Ceramic Foam Filters (CFF) for Liquid Aluminum Filtration

Robert Fritzsch, Mark William Kennedy, Jon Arne Bakken, Ragnhild E. Aune

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Heat Transfer Measurements During DC Casting of Aluminium. Part II: Results and Verification for Extrusion Ingots

Einar K. Jensen, Stein Tore Johansen, T.R. Bergstrom, Jon Arne Bakken

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Heat Transfer Measurements during DC Casting of Aluminium Part I: Measurement Technique

Jon Arne Bakken, T.R. Bergstrom

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Impact of Coil Geometry on Magnetohydrodynamic Flow in Liquid Aluminium and Its Relevance to Inclusion Separation by Electromagnetophoresis

Mark William Kennedy, Jon Arne Bakken, Ragnhild E. Aune

Abstract Magnetohydrodynamic (MHD) flow will be produced in liquid aluminium by gradients in the Lorentz forces created by the interactions of induced currents and the time-varying magnetic field of an induction coil. The magnitude of the velocity field is driven by the …

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Erratum to: Electromagnetically Modified Filtration of Aluminum Melts—Part I: Electromagnetic Theory and 30 PPI Ceramic Foam Filter Experimental Results

Mark William Kennedy, Shahid Akhtar, Jon Arne Bakken, Ragnhild E. Aune

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Empirical Verification of a Short-Coil Correction Factor

Mark William Kennedy, Shahid Akhtar, Jon Arne Bakken, Ragnhild E. Aune

The magnetic field produced in the air gap by any particular “short coil” at a fixed current is affected by a highly complex interaction between the coil and workpiece geometries, as well as changes in frequency. A frequency-modified semiempirical short-coil correction factor, …

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Reply to Discussion of “Characterization of Ceramic Foam Filters Used for Liquid Metal Filtration” and “Electromagnetically Modified Filtration of Aluminum Melts: Part I. Electromagnetic Theory and 30 PPI Ceramic Foam Filter Experimental Results”

Mark William Kennedy, Shahid Akhtar, Jon Arne Bakken, Ragnhild E. Aune

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Heat Transfer Measurements during DC Casting of Aluminium. Part II: Results and Verification for Extrusion Ingots

Einar K. Jensen, Stein Tore Johansen, T.R. Bergstrom, Jon Arne Bakken

This chapter contains sections titled: Introduction Experimental Procedure Conclusions

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