Mainz 2022 – wissenschaftliches Programm

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P: Fachverband Plasmaphysik

P 9: Poster I

P 9.40: Poster

Dienstag, 29. März 2022, 16:00–17:30, P

The shallow water accretion disk experiment SWADEX — •Peter Manz — Institute of Physics, University of Greifswald, Germany

Accretion disks are ubiquitous in astrophysics. In laboratory experiments, especially, the two-dimensional geometry, magneto-hydrodynamic (MHD) and gravitational effects are difficult to study. An analogy to shallow water can be used to simulate the gravitational potential by a gravitational funnel. In MHD a magnetic tension force gives rise to a return force which is directly proportional to the displacement, like a spring under tension. The analogy to the spring motivated the approach using polymers to mimic the effect of the magnetic field. Using viscoelastic fluids instead of liquid metals, it is possible to perform cheaper and safer experiments. First results of studies related to the standing accretion shock instability [1] and the magneto-rotational instability [2] will be presented.

[1] S. Sebold et al. Phys. Rev. E 102, 063103 (2020) [2] F. Günzkofer, P. Manz Phys. Rev. Fluids 6, 054401 (2021)