Here you can find upcoming and past events organized by our group.
Prof. Dr. Nicolas Gauger, Chair for Scientific Computing (SciComp), TU Kaiserslautern
SciComp Seminar Series
Please contact Prof. Gauger, if you want to register for an online talk in our SciComp Seminar Series or just to register for the seminar.
A list of the already scheduled talks can be found –> here:
The goal of the workshop is to give an overview of recent research activities at SciComp. In addition, collaborators from Fraunhofer ITWM, Trier University and MTU Aero Engines will give invited presentations for scientific exchange. Finally, we will brainstorm about future collaboration.
13:15-15:00 Scientific Short Presentations – SciComp (5+5 minutes each)
(Dr. E. Özkaya, Dr. M. Sagebaum, Dr. L. Kusch, O. Burghardt, R. Pochampalli, J. Blühdorn, G. Suarez, Dr. L. Chen, M. Aehle, J. Rottmayer)
15:00-15:30 Coffee break
15:30-16:45 Dr. A. Linke (SciComp)
16:45-17:30 Scientific Short Presentations – Guests (10+5 minutes each)
(Dr. J. Kuhnert (ITWM), PD Dr. S. Schmidt (Trier U), C. Battistoni (MTU))
17:30-18:00 Brainstorming/Thoughts on Future Collaboration (Prof. N. Gauger)
18:00 Workshop Dinner
15:30Hybrid (Room 32-349 and via Zoom)
Dr. Alexander Linke , Chair for Scientific Computing (SciComp), University of Kaiserslautern-Landau (RPTU)
Title: On the Discretization of the Incompressible Navier–Stokes Equations, an Elephant in the Room, and a Conceptual Update for Discretizing Constrained PDEs
The dynamics of the incompressible Navier-Stokes equations are closely related to equivalence classes of forces and an associated semi-norm, in the kernel of which all gradient fields lie. The corresponding numerical treatment of gradient fields in the momentum balance, which only change the pressure but not the velocity of an incompressible flow, has been repeatedly addressed in research since the 1980s, and a number of very different algorithmic approaches have been proposed to avoid this numerical source of error. For many years, however, the research question remained the proverbial ‘elephant in the room’, whose relevance for simulation practice was assessed very differently in the research community. The talk provides an overview of the historical development of the research question and discusses its practical relevance based on completely different physical regimes such as hydrostatics and high Reynolds number vortex flows. In particular, it discusses how recently developed pressure-robust methods using H(div)-conforming finite elements could solve the numerical challenge in a fundamental way and thus contribute to the solution of other previously unsolved problems. Furthermore, a conceptual update for the discretization of PDEs with constraints is proposed, which replaces the historical Stokes model problem of classical mixed finite element theory by a set of model problems from which the relevance of H(div)-conforming algorithms for the discretization of incompressible flows immediately emerges. Finally, considerations on the relevance of the obtained results for the numerical treatment of related problems, such as the compressible Navier–Stokes equations, are discussed.
How to join online
You can join online via Zoom, using the following link: