Blar i NTNU Open på forfatter "Tesfahunegn, Yonatan"
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Comparative study of AC and DC solvers based on current and power distributions in a submerged arc furnace
Tesfahunegn, Yonatan; Magnusson, Tordur; Tangstad, Merete; Sævarsdottir, Gudrun A. (Peer reviewed; Journal article, 2020)This work discusses 3D models of current distribution in a three-phase submerged arc furnace that contains several components, such as electrodes, central arcs, craters, crater walls, and side arcs that connect electrodes ... -
Dynamic Current and Power Distributions in a Submerged Arc Furnace
Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun (Journal article; Peer reviewed, 2019)Most submerged arc furnaces used for the production of ferroalloys run on three-phase alternating current. This affects the electrical operation of the furnace and thus it is of interest to study alternating current ... -
Dynamic Current Distribution in the Electrodes of Submerged Arc Furnace Using Scalar and Vector Potentials
Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Saevarsdottir, Gudrun (Journal article; Peer reviewed, 2018)This work presents computations of electric current distributions inside an industrial submerged arc furnace. A 3D model has been developed in ANSYS Fluent that solves Maxwell’s equations based on scalar and vector potentials ... -
The Effect of Electrode Movements on Electrical Characteristics of a Submerged Arc Furnace
Tesfahunegn, Yonatan; Magnusson, Thordur; Tangstad, Merete; Sævarsdottir, Gudrun (Peer reviewed; Journal article, 2021)This work discusses the effect of electrode position on the electrical characteristics of a submerged arc furnace. A 3D model has been developed in ANSYS Maxwell using an eddy current solver that considers alternating ...