COMPEL - The international journal for computation and mathematics in electrical and electronic engineering: Volume 22 Issue 3
Table of contents
Electromagnetic fields and human body: a new challenge for the electromagnetic field computation
N. Siauve, R. Scorretti, N. Burais, L. Nicolas, A. NicolasThe electromagnetic fields have a great influence on the behaviour of all the living systems. The as low as reasonably achievable (ALARA) principle imposes, in case of long…
Extrusion, contraction: their discretization via Whitney forms
Alain BossavitThe v×B term in eddy current equations for conducting fluids is an instance of contraction of a differential form by a vector field. We search for a natural way to discretize such…
Trade‐off between information and computability: a technique for automated topological computations
Saku Suuriniemi, Lauri KettunenFinite element‐based PDE solver software systems are typically method‐driven. The user has to supply the data in a particular form required by a numerical method. The method…
Improved grouping scheme and meshing strategies for the fast multipole method
André Buchau, Wolfgang Hafla, Friedemann Groh, Wolfgang M. RuckerIf the fast multipole method (FMM) is applied in the context of the boundary element method, the efficiency and accuracy of the FMM is significantly influenced by the used…
Reconstruction of inhomogeneities in fluids by means of capacitance tomography
Bernhard Brandstätter, Gert Holler, Daniel WatzenigElectrical capacitance tomography (ECT) is a technique for reconstructing information about the spatial distribution of the contents of closed pipes by measuring variations in the…
Optimization of perfectly matched layer for 2D Poisson's equation with antisymmetrical or symmetrical boundary conditions
Libor Dedek, Jarmila Dedkova, Juraj ValsaParameters of the perfectly matched layer (PML) for 2D magnetic field in a region bounded by circular boundary are rigorously calculated for the case of symmetrical or…
Optimisation of magnetic sensors for current reconstruction
A. Formisano, R. MartoneThe problem of reconstructing the current profile in regions not directly accessible by sensors is tackled, with reference to current profile reconstruction in cable in conduit…
Robust target functions in electromagnetic design
Piergiorgio Alotto, Christian Magele, Werner Renhart, Andreas Weber, Gerald SteinerUncertainties in the design variables of non‐linear engineering optimization problems are often neglected. That could result in considerable deterioration of the target function…
Adjustment with magnetic field
Zsolt Szabó, Amália IványiIn this paper the kinetic behavior of a non‐magnetic cube, plated on two opposite sides with ferromagnetic coating, situated on a horizontal plane surface and immersed in a…
Magnetomechanical field computations of a clinical magnetic resonance imaging (MRI) scanner
M. Rausch, M. Gebhardt, M. Kaltenbacher, H. LandesIn this paper, an efficient magnetomechanical calculation scheme based on the finite element method is presented. This scheme is used for the precise forecast of the dynamical…
Robust design of high field magnets through Monte Carlo analysis
Vincenzo Cavaliere, Marco Cioffi, Alessandro Formisano, Raffale MartoneAn effective approach to the optimal design of electromagnetic devices should take into account the effect of mechanical tolerances on the actual devices performance. A possible…
e‐Courseware authoring tools for teaching electrodynamics
U. Baumgartner, M. Grumer, M. Jaindl, A. Köstinger, Ch. Magele, K. Preis, M. Reinbacher, S. VollerNowadays, there are strong movements towards development and usage of multimedia courseware as a means of knowledge transfer. Many authors of textbooks or lecture notes are now…
Comparison of radial basis function approximation techniques
Jean‐Louis Coulomb, Avenir Kobetski, Mauricio Caldora Costa, Yves Mare´chal, Ulf Jo¨nssonThis paper compares three different radial basis function neural networks, as well as the diffuse element method, according to their ability of approximation. This is very useful…
Automating the design of low frequency electromagnetic devices – a sensitive issue
David A. LowtherThis paper discusses the possibility of automating the design of electromagnetic devices. Several paradigms currently exist to accelerate the design process, search the design…
Hybrid magnetic equivalent circuit – finite element modelling of transformer fed electrical machines
J. Gyselinck, P. Dular, W. Legros, D. GrenierThis paper deals with the modelling of transformer supply in the two‐dimensional (2D) finite element (FE) simulation of rotating electrical machines. Three different transformer…
Application of the fast multipole method to the 2D finite element‐boundary element analysis of electromechanical devices
R.V. Sabariego, J. Gyselinck, C. Geuzaine, P. Dular, W. LegrosThe present paper deals with the fast multipole acceleration of the 2D finite element‐boundary element modelling of electromechanical devices. It is shown that the fast multipole…
Forward simulations for free boundary reconstruction in magnetic fluid dynamics
Hartmut Brauer, Marek Ziolkowski, Matthias Dannemann, Milko Kuilekov, Denis AlexeevskiIn many industrial applications of magnetic fluid dynamics it is important to control the motion of the surface of liquids. In aluminium electrolysis cells, large surface…
Approximate prediction of losses in transformer plates
József Pávo´, Imre Sebestyén, Szabolcs Gyimóthy, Oszkár BíróThree methods are presented for the approximate prediction of losses in laminated transformer cores. The input data of the calculations are the field distribution obtained by a…
An accurate model for a lead‐acid cell suitable for real‐time environments applying control volume method
Bernhard Schweighofer, Bernhard BrandstätterThe accurate simulation of battery cells is of growing interest in automotive industry especially in hybrid vehicle technology. Conventional lumped parameter models are not able…
Numerical analysis of fast switching electromagnetic valves
M. Ertl, M. Kaltenbacher, R. Mock, R. LerchThis paper presents a 2D nonlinear magnetomechanical analysis of an electromagnetic actuator based on finite elements. An impact mechanical problem with its inherent convergence…
Vector hysteresis model based on neural network
Miklós Kuczmann, Amália IványiOn the basis of the Kolmogorov‐Arnold theory, the feedforward type artificial neural networks (NNs) are able to approximate any kind of nonlinear, continuous functions represented…
3D magneto‐thermal computations of electromagnetic induction phenomena
Bernard Paya, Virgiliu Fireteanu, Alexandru Spahiu, Christophe GuérinThis paper presents the results of a series of tests made in order to validate the magneto‐thermal module of the new FLUX3D v3.40. The tool was conceived to solve the coupled…
An electromagnetic approach to analyze the performance of the substation's grounding grid in high frequency domain
Bo Zhang, Xiang Cui, Zhibin Zhao, Haoliu Yin, Lin LiAccording to the method of moment, an effective electromagnetic approach for the substation's grounding grid in high frequency domain is presented. An efficient method based on…
Simulation of a mode stirred chamber excited by wires using the TLM method
Djonny Weinzierl, Adroaldo Raizer, Arnulf Kost, Golberi de Salvador FerreiraThis paper presents the use of transmission‐line modelling ‐ time domain (TLM‐TD) method to analyse the fields in mode stirred reverberation chambers excited by wires. It will be…
Multigrid for transient 3D eddy current analysis
Bernhard Weiß, Oszkár BíróA multigrid (MG) algorithm for the calculation of transient 3D eddy currents is presented. The finite element method with edge elements is used for the discretization of the…
A full‐Maxwell algorithm for the field‐to‐multiconductor line‐coupling problem
Federico Delfino, Renato Procopio, Mansueto Rossi, Mario NerviA general method to study the response of a system of multiconductors, lying above a perfectly conducting ground and excited by a HF electromagnetic field wave, is presented in…
ISSN:
0332-1649Online date, start – end:
1982Copyright Holder:
Emerald Publishing LimitedOpen Access:
hybridEditor:
- Prof Jan Sykulski