The 11th International Symposium on Electric and Magnetic Fields, EMF 2018, was hosted in Darmstadt and concluded on Friday. The purpose of the Symposium was to throw a bridge between recent research advances in mathematical and numerical modelling of electromagnetic fields and the growing number of industrial problems requiring such techniques. There were 95 participants from 19 countries and 3 invited talks. The participants gave 26 oral presentations, presented 53 posters and drank 700 cups of coffee. Already these numbers imply that the conference was a great success. Now, we are looking forward to meet our colleagues in Marseille for the next edition organized by André Nicolet
We recently proposed a new Parareal algorithm for problems with discontinuous sources which are common in electrical engineering, e.g., when an electric device is supplied with a pulse-width-modulated signal. Our algorithm uses a smooth input for the coarse problem with reduced dynamics. In the new arXiv preprint 1803.05503
preprint an error estimates is derived that shows how the input reduction influences the overall convergence rate of the algorithm. The theoretical results are supported by numerical experiments, including an eddy current simulation of an induction machine.
Three papers from us on novel methods for time domain simulation of electromagnetic phenomenas have been published last week:
- ParaExp using Leapfrog as Integrator for High-Frequency Electromagnetic Simulations in: Radio Science. doi: 10.1002/2017RS006357.
- Solving nonlinear circuits with pulsed excitation by multirate partial differential equations in IEEE Transactions on Magnetics. doi: 10.1109/TMAG.2017.2759701.
- Parallel-in-time Simulation of Eddy Current Problems using Parareal in IEEE Transactions on Magnetics. doi: 10.1109/TMAG.2017.2763090.
Preprints can be found at arXiv
The 4th International Conference on Computational Engineering takes place from Thursday, September 28, to Friday, September 29, 2017 at the darmstadtium conference center next to Technische Universität Darmstadt. The conference is organized by the Graduate School of Computational Engineering at TU Darmstadt together with the International Graduate School of Science and Engineering at Technical University of Munich, the Stuttgart Research Center for Simulation Technology at University of Stuttgart and the Aachen Institute for Advanced Study in Computational Engineering Science at RWTH Aachen University. Continue reading →
From September 21st-22nd experts from CERN, Geneva and Tampere University of Technology, Finland and Technische Universität Darmstadt, Germany meet at the Graduate School CE, Darmstadt. They discuss models and methods for the simulations of transient effects in superconducting magnets and circuits. The key feature of the STEAM framework is the co-simulation of numerical models. Continue reading →
We published a first preprint at arXiv
on our research on Isogeometric BEM for Superconducting Cavities (DFG SCHO 1562/3-1
and KU 1553/4-1
). In cooperation with the Computational Mathematics
group in Basel we discuss the usage of higher order B-splines in view of regularity requirements, convergence of the solution within the domain and multipole compression techniques. Continue reading →
Our paper on “Optimized Field/Circuit Coupling for the Simulation of Quenches in Superconducting Magnets” has been accepted by the IEEE Journal on Multiscale and Multiphysics Computational Techniques
. The paper proposes an optimised waveform-relaxation approach for the simulation of magnetothermal transients in superconducting magnets. The work has been carried in the framework STEAM together with CERN.
Lichtenberg-Cluster an der TU Darmstadt. Bild: Katrin Binner
From the press release: “Ein wichtiges Etappenziel für den Ausbau des Lichtenberg-Hochleistungsrechners ist geschafft: Der Wissenschaftsrat hat während seiner Frühjahrssitzungen das TU-Vorhaben „Lichtenberg II“ für die Förderung im Bund-Länder-Programm Forschungsbauten empfohlen. Beantragt sind 15 Millionen Euro, über die die Gemeinsame Wissenschaftskonferenz von Bund und Ländern Ende Juni entscheiden wird.”
Update. Funding is granted: “Lichtenberg II für die Spitzenforschung TU erhält 15 Millionen Euro von Bund und Land für Hochleistungsrechner” Continue reading →
Abele Simona and Luca Bonaventura from MOX, Politecnico di Milano will talk on 13 Mar 2017, 16:15–17:45 in S2|17-103 about Numerical approximation of charged particle motion in magnetic quadrupoles.