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Mathematisches Kolloquium

Datum Gastredner Thema Ort
Im Rahmen des Mathematischen Kolloquiums
Im Rahmen des gemeinsamen Oberseminars Differentialgeometrie der Universitäten Bochum/Dortmund
Im Rahmen der Gambrinus-Reihe
06.11.2014
16.15 Uhr
Hông Vân Lê
Academy of Science of the Czech Republic, Prag
Lagrangian submanifolds in strictly nearly Kähler 6-manifolds [WWW] Mathematikgebäude, Seminarraum M911 (9. Etage)
Im Rahmen des Mathematischen Kolloquiums
Im Rahmen der Vortragsreihe Angewandte Numerik und Simulation
06.11.2014
16.15 Uhr
PD Dr. Sebastian Franz
TU Dresden
How much discontinuity is needed in dG for convection-diffusion problems?

Zusammenfassung


It is well known that standard Galerkin methods on equidistant meshes and even on layer adapted meshes lead to oscillations in the solution. Using stabilised methods, these oscillations can be reduced. One of these techniques is the discontinuous Galerkin method that uses discontinuous elements instead of continuous ones and allows jumps across inner edges. A drawback is the much higher number of degrees of freedom and therefore a much higher computational cost.
We investigate the use of reduced dG methods, where continuous elements are enriched by some discontinuous bubble functions of higher degree. Hereby the stability of the method is increased but less degrees of freedom compared with the full discontinuous Galerkin method are used.
This approach follows a series of papers by M. Bittl, D. Kuzmin and R. Becker.
[Abstract]
Mathematikgebäude, Seminarraum M614/616 (6. Etage)
Im Rahmen des Mathematischen Kolloquiums
01.12.2014
ca. 17.00 Uhr
Fakultät für Mathematik
TU Dortmund
Kolloquium zur Versicherungsmathematik und Vergabe des Frommknecht-Preises
mit Vortrag von Prof. Dr. Ralf Korn ( TU Kaiserslautern)
Mathematikgebäude, Hörsaal E28