Numerical Simulation of Non--Reacting Gas Flows (Euler Equations)

numerical simulations using dynamic mesh adaption of flow problems basing on the Euler equations of gas dynamics

© Thomas Geßner

Here you can see some numerical simulations I performed for flows modelled with the Euler Equations of gas dynamics. In all timedependent calculations an explicit higher order upwind scheme on an unstructured adaptive grid is used.
The visualization is done by means of the GRAphics Programming Environment GRAPE ([1], [2]).

Further numerical simulations (as pictures and movies) of physical problems modelled by conservation laws in general and in particular the Euler equations of gas dynamics show the examples of the lecture "Theorie und Numerik für Erhaltungsgleichungen".

If you are interested in related web pages see my collection of links.

Click on the small pictures to see the corresponding large one or the latent movie.

Forward Facing Step Problem:

Timedependent adaptive calculation.


The pictures show the development of the density and the adaptive unstructured grid.

Visualization using particle traces and stream surfaces on velocity field.

A short film (.mpg.gz 366 KB) in which the development of the Machnumber near the step is shown.


Two cylinder in a supersonic flow:

Timedependent adaption and particle traces on steady state solution.

Quicktime (.mov.gz) (25.6 MB) and two MPEG filmlets (.mpg.gz) (2.6 MB, and 6.0 MB)

Two dimensional Riemann problem:

Timedependent adaptive grid and the isolines of the density.



last updated: 08.12.1999 by Thomas Geßner ( gessner@mathematik.uni-freiburg.de).