Bochum 2002 – wissenschaftliches Programm

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P: Plasmaphysik

P 21: Poster: Grundprobleme, Theorie, Plasmatechnologie, Astrophysikalische Plasmen

P 21.11: Poster

Montag, 18. März 2002, 17:40–18:40, HZO Foyer

Self-consistent 3D MHD modelling of space and laboratory plasmas based on the CWENO scheme — •Jens Kleimann¹, Horst Fichtner¹, Kai Germaschewski², Rainer Grauer², and Andreas Kopp¹ — ¹Theoretische Physik IV, insbes. Weltraum- und Astrophysik, Ruhr-Universität Bochum, 44780 Bochum — ²Theoretische Physik I, insbes. Plasma-, Laser- und Atomphysik, Ruhr-Universität Bochum, 44780 Bochum

Until recently, numerical simulations of highly super-Alfénic plasmas have been severely limited regarding the treatment of discontinuities. However, a correct understanding of numerous laboratory and space plasmas requires a detailed reproduction of the formation and propagation of shocks and singular structures. Typical examples are bow shocks of planetary magnetospheres and shocks driven by solar coronal mass ejections in space plasmas or fast reconnection in laboratory plasmas.
Significant progress regarding the numerical simulation of such plasmas was achieved with the development of the Central Weighted Essentially NonOscillatory (CWENO) scheme. A third-order scheme based on this technique, which is able to efficiently capture strong gradients on small spatial scales, forms the basis of our newly developed code. We present first test results and discuss prospective applications, particularly to the dynamics of the solar wind.