COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 22 Issue 1

Influence of the electro‐magnetic stirring on the boundary layer of a molten steel pool

Massimo Fabbri, Francesco Galante, Francesco Negrini, Eiichi Takeuchi, Takehiko Toh

Electro‐magnetic stirrers, applied to the mold of a continuous caster, induces electromagnetic forces that influence the steel flow pattern modifying the casting parameters. The…

Floating potential constraints and field‐circuit couplings for electrostatic and electrokinetic finite element models

H. De Gersem, R. Belmans, K. Hameyer

To retain small models, electrostatic and electrokinetic finite element formulations are linked with several field‐circuit couplings and floating potential constraints. The…

Dynamic load impedance matching for induction heater systems

H.I. Sewell, D.A. Stone, C.M. Bingham

It is not normally possible to heat a static steel work‐piece past the Curie temperature without incurring reduced inverter utilisation. Since the inverter cost increases with…

Turbulent flow dynamics, heat transfer and mass exchange in the melt of induction furnaces

E. Baake, B. Nacke, A. Umbrashko, A. Jakovics

Experimental investigations of the turbulent flow velocities measured in the melt of experimental induction furnaces show, that beside the intensive local turbulence pulsations…

Computer simulation of induction heating system with series inverter

Jerzy Zgraja, Jerzy Bereza

The paper presents the results of computer simulation of the process of induction heating with series transistor inverter. In the simulation of induction heating system the…

Removal of SiC inclusions in molten aluminium using a 12 T static magnetic field

Fabrizio Colli, Massimo Fabbri, Francesco Negrini, Shigeo Asai, Kensuke Sassa

The analysis of particles trajectories in a vertical cylindrical coil shows that the magnetization force acting on paramagnetic particles has predominantly axial component which…

Numerical simulations of continuous induction heating of magnetic billets and sheets

Virgiliu Fireteanu, Tiberiu Tudorache

The relative motion between the inductor and the work‐piece to be heated, the magnetic non‐linearity and the dependence of physical properties on temperature are considered in the…

Modelling of induction heating and consequent hardening of long prismatic bodies

I. Dolezel, J. Barglik, C. Sajdak, M. Skopek, B. Ulrych

The paper deals with the problem of induction hardening of long prismatic ferromagnetic bodies. The body is first heated to the austenitizing temperature typically in a…

Experimental and numerical investigations of the temperature field and melt flow in the induction furnace with cold crucible

E. Baake, B. Nacke, F. Bernier, M. Vogt, A. Mühlbauer, M. Blum

Comprehensive knowledge of the complicated physical behavior of the induction furnace with cold crucible (IFCC) is required to utilize the advantages of this melting aggregate in…

Transverse flux induction heating: comparison between numerical models and experimental validation

V. Fireteanu, T. Tudorache, A. Geri, G.M. Veca

This paper presents two numerical methods, which will be able to predict the temperature distribution in the thin moving conducting sheet, which is caused by the eddy‐current…

Optimal shape design of devices and systems for induction‐heating: methodologies and applications

P. Di Barba, A. Savini, F. Dughiero, S. Lupi

The paper reports recent experiences of the authors in the automated optimal design of devices and systems for induction heating. The results presented have been obtained in the…

Using of EM fields during industrial CZ and FZ large silicon crystal growth

Alfred Mühlbauer, Andris Muiznieks, Gundars Ratnieks, Armands Krauze, Georg Raming, Thomas Wetzel

The paper describes numerical simulation tools for electromagnetic (EM), hydrodynamic, temperature and concentration fields in industrial Czochralski (CZ) and floating zone (FZ…

TFH – transverse flux induction heating of non‐ferrous and precious metal strips: Results of a EU research project

F. Dughiero, S. Lupi, A. Mühlbauer, A. Nikanorov

In the years 1999 and 2000 the Universities of Hannover and Padua and four industrial partners from Italy and Germany have developed a common research project on TFH financed by…

Electromagnetic phenomena in resistance heating of curvilinear cylindrical work pieces

S. Lupi, A. Aliferov

Distribution of alternating current density and internal power sources in the cross‐section of curvilinear hollow work pieces under resistance heating are presented in this paper…

Mathematical modelling of the industrial growth of large silicon crystals by CZ and FZ process

Alfred Mühlbauer, Andris Muiznieks, Gundars Ratnieks, Armands Krauze, Georg Raming, Thomas Wetzel

The present paper gives an overview of the complex mathematical modelling of industrial Czochralski (CZ) and floating‐zone (FZ) processes for the growth of large silicon single…

3D FEM models for numerical simulation of induction sealing of packaging material

A. Babini, R. Borsari, A. Fontanini, F. Dughiero, M. Forzan

In the paper a 3D finite element method (FEM) model of induction sealing of multilayer packaging material will be presented. A parametrical analysis of the model has been…

Computer simulation for fundamental study and practical solutions to induction heating problems

Valentin Nemkov, Robert Goldstein

This presentation is a continuation of the presentation made at IHS 98. The topics remain the same; however, the content is updated to reflect the improvements in both computer…