I am out of office the first half of the next week. I will give a talk on "Numerische Zeitintegrationsverfahren für gekoppelte Feld- und Netzwerkprobleme" in the Oberseminar Numerische Mathematik of the Martin-Luther-Universität Halle-Wittenberg on December, 6.
Continue reading ‘Oberseminar at the Martin-Luther-Universität’www.schoeps.org
Archive for the 'Mathematics' Category
Eddy Currents
This term the chair of Applied Mathematics offers a seminar on Computational Magnetics. The aim is to understand scientific computing by improving our in-house magnetoquasistatic simulation package ‘FIDES‘.
All the typical tasks of applied mathematics will be covered: modeling, software design, coding, testing, simulation und visualization. This course follows up the lecture from 2010.
Auf der Tagung des deustchen Mathematikerverbandes habe ich einen Vortrag zum “Mehrskalenverfahren für die Feld- und Netzwerkkopplung” gehalten: es wurden vor allem Mehrskalenverfahren in der Zeit für die schwachgekoppelte Simulation von räumlichverteilten elektromagnetischen Bauteilen mit elektrischen Netzwerken besprochen.
Continue reading ‘DMV Tagung, Köln’Finally, the science repository for openSUSE comes with a recent Octave version that supports UMFPACK. Add the corresponding repository
sudo zypper ar http://download.opensuse.org/repositories/science/openSUSE_Tumbleweed/ opensuse:science
and install the package
sudo zypper in octave
You verify that UMFPACK works by the following computation
A=sprandsym(1000,0.01)+eye(1000);b=rand(1000,1);norm(A*(A\b)-b)
which solves a linear system with a sparse symmetric positive definite system matrix A and prints the residual to the console.
Die Arbeitsgruppe für Angewandte Mathematik und Numerische Analysis an der Bergischen Universität Wuppertal veranstaltet am 1. Juli 2011, 13:00 – 16:00 im Rahmen des BMBF-Verbundprojekts SOFA (Gekoppelte Simulation und Optimierung für robustes virtuelles Fahrzeugdesign) einen Kopplungsworkshop. Herzlich eingeladen sind auch alle interessierten Studenten, Mitarbeiter und Industriepartner, die nicht zum Projekt gehören.
I successfully defended my doctorate on “Multiscale Modeling and Multirate Time-Integration of Field/Circuit Coupled Problems” last Friday. Update: The thesis is published in the subseries on electromagnetism of the Fortschritt-Berichte VDI and on the e-publication server of the Bergische Universität Wuppertal.
I give a seminar talk on Tuesday, 14 Dec 2010, 11:00-12:00 at K.U.Leuven, Dep. Computer Science, Celestijnenlaan 200A, lecture room 05.001.
Continue reading ‘Seminar Talk: Higher Order Cosimulation’
The website of my working group at Wuppertal has been relaunched last week:
http://www-num.math.uni-wuppertal.de
During September I will be out of office (Wuppertal). I will be a guest at the Wave Propagation and Signal Processing Research Group of the Katholieke Universiteit Leuven, Kortrijk, thanks to my DAAD grant.
This is my thesis on computational electromagnetics, from the abstract:
Continue reading ‘Master-Thesis’
Electric circuits contain devices that exhibit multi-physical effects. We may think of electric or magnetic, but also thermal effects. Traditionally these devices are idealized and only one effect is considered, while the others are disregarded. This yields simple laws that mathematically express their transient behaviour, but does not conform to reality. So sometimes these models are not accurate enough and one wants to simulate a particular device with a refined model. We shall present such a refined modelling approach for electromagnetic devices in this treatise.
Recent Commits
- added fit model of unit cube 25. October 2011
- analytic example for the wave equation 21. October 2011
- added initial support for heat simulation 21. October 2011
- workaround removed because 'fill' works in octave 3.4.3 21. October 2011
- added a simple Runge-Kutta-Chebyshev scheme 20. October 2011
- added van der Pol test equation 20. October 2011
- creates stability plots for explicit schemes 20. October 2011
- motor updated (but still broken) 20. October 2011
- some bugs fixed 19. October 2011
- function is more fail save 19. October 2011