DAEs in Computational Electromagnetics

Our chapter on systems of Differential Algebraic Equations in computational electromagnetics has been published as part of the Differential-Algebraic Equations Forum book series:

Starting from space-discretisation of Maxwell’s equations, various classical formulations are proposed for the simulation of electromagnetic fields. They differ in the phenomena considered as well as in the variables chosen for discretisation. This contribution presents a literature survey of the most common approximations and formulations with a focus on their structural properties. The differential-algebraic character is discussed and quantified by the differential index concept.

Best Paper Award at KH2018

Felix Wolf from GSCE/TEMF has received the “Young Scientist Best Paper Award” of the Kleinheubacher Tagung on “Radio Science” which took place September 24-26, 2018. The prize has been awarded for the paper “Isogeometric Discretisations of the Electric Field Integral Equation” by Felix Wolf, Jürgen Dölz, Stefan Kurz and Sebastian Schöps. Continue reading →

New ECMI SIG: Modeling, Simulation and Optimization in Electrical Engineering

Recently, ECMI’s research and innovation committee agreed to establish a special interest group on ‘Modeling, Simulation and Optimization in Electrical Engineering’ (for short: MSOEE). Among the major goals is bridging the research in applied mathematics with the industrial needs in electrical engineering. Continue reading →

A new Centre for Computational Engineering at TU Darmstadt

In the process of establishing Computational Engineering (CE) as an independent and interdisciplinary scientific research at TU Darmstadt a new Centre for Computational Engineering was established. It is integrated into the structure of the university as an institutionalized cross-sectional area, orthogonally to the existing departments. The centre gathers all research and teaching activities within CE (undergraduate teaching, graduate school and research activities). More information (in German) can be found in TU Darmstadt’s news journal hoch3.

How to get Octave 4.4.0 for macOS with GUI

The macOS package manager Homebrew ships with Octave 4.4 but it links to Apple’s proprietary BLAS implementation, the QT graphical user interface is not supported and the ode15 solvers are broken due to Octave’s outdated sundials 2.x dependency. However, there are two alternatives:
If you prefer a quick and easy solution, then go to octave-app.org and download the disk image that is being put together by apjanke and me. On the other hand, if you want to compile it by yourself (including all necessary patches) then follow the instructions below and hope for the best…

#add openblas repository
brew tap dpo/openblas
brew tap-pin dpo/openblas
#download the new formula
curl https://raw.githubusercontent.com/schoeps/homebrew-openblas/master/octave.rb -o /usr/local/Homebrew/Library/Taps/dpo/homebrew-openblas/octave.rb
brew install octave --with-qt

ECMI 2018 in Budapest

The 20th European Conference on Mathematics for Industry concluded on June, 22nd in Budapest, Hungary. The conference series is devoted to enforce the interaction between academy and industry, leading to innovations in both fields. These events have attracted leading experts from business, science and academia, and have promoted the application of novel mathematical technologies to industry. We organized a minisymposium on “Simulation, Optimization and Uncertainty Quantification of Field/Circuit Problems for E-Mobility Applications” and contributed three scientific talks
  • Kulchytska-Ruchka, Iryna ; Schöps, Sebastian ; Gander, Martin J. ; Niyonzima, Innocent : Convergence analysis of Parareal for systems with discontinuous inputs.
  • Cortes Garcia, Idoia ; De Gersem, Herbert ; Schöps, Sebastian : Generalised elements for the analysis of field/circuit coupled systems.
  • Bontinck, Zeger ; Corno, Jacopo ; Schöps, Sebastian ; De Gersem, Herbert : Iso-Geometric Analysis as a Tool for Simulating Electrical Machines.

Computational Engineering, der SPIEGEL und das Düsentrieb-Dilemma

Im SPIEGEL 23/2018 ist der Artikel “Das Düsentrieb-Dilemma” erschienen. Der Artikel fordert eine Reform des Ingenieurwesens, die längst stattgefunden hat. Es wird etwa kritisiert “ihm [dem Ingenieur] fehlt vielfach das Verständnis für Algorithmen oder Quellcodes“, aber selbst traditionelle Ingenieursstudiengänge bieten Studierenden im Pflicht- und Wahlpflichtbereich unzählige Möglichkeiten, sich mit der “digitalen Welt” zu beschäftigen, z.B. Veranstaltungen zu Computersimulation, Software-Engineering, Projektmanagement bis hin zu Unternehmensgründung. Neue interdisziplinäre Studiengänge finden beim SPIEGEL gar keine Erwähnung… Continue reading

Festkolloquium “Numerische Mathematik in der Technischen Simulation” zu Ehren von Peter Rentrop

Gestern fand in Wuppertal das Festkolloquium “Numerische Mathematik in der Technischen Simulation” anlässlich des 70. Geburtstages von Prof. Peter Rentrop statt. Als “Descendant” (akademischer Enkel) war ich als Redner eingeladen und habe über “Coupled Differential Algebraic Equations – From Electric Networks to CERN’s Quench Protection System” vorgetragen. Continue reading