• Schild Mathematik Ost
Mathematische Strömungsmechanik

Oberseminar Mathematische Strömungsmechanik

Relaxation scheme: a tool to design time integration schemes
Datum: 04.06.2020, 09:30 - 10:00 Uhr
Kategorie: Veranstaltung
Ort: Hubland Nord, Geb. 40, 03.003
Vortragende:r: Emmanuel Franck

In this work, we will introduce different relaxation models for hyperbolic systems. With this relaxation we will show that it possible to simplify the design and the resolution of semi-implicit and implicit time integrators. To begin, we will introduce two linear relaxation systems: the Xin-Jin relaxations and the kinetic relaxation models. After that, focusing on the low-Mach limit in the Euler equations we will introduce a new relaxation similar to the Suliciu relaxation method, and show how this model allows to design simple semi-implicit schemes for Euler equations/Ripa equations adapted to the low Mach/low Froude regimes

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