Benjamin KHIAR, Viviana LAGO, Olivier DE BOUËT DU PORTAL, Matthieu MAZALLON

DOI Number: N/A

Conference number: HiSST-2025-318

We present preliminary experimental and numerical results on the interaction between hypersonic ionized plasma flows and magnetized coin-shaped models. In the experiments, a magnetic field is generated by placing cuboid neodymium magnets directly behind models fabricated from various metallic materials. High-speed CMOS camera observations of the plasma-model interaction reveal substantial alterations in plasma self-emission in the presence of the magnetic field, with a pronounced dependence on magnet orientation. These modifications are attributed to high levels of electron magnetization, characterized by Hall parameter values reaching several dozen. Further analysis provides insights into the
magnetic field’s effects on shock standoff distance and model surface condition. Direct Simulation Monte Carlo (DSMC) numerical simulations are employed to characterize the flow, particularly MHD-relevant quantities such as the full tensorial electrical conductivity. Additionally, a simple ”test-particle” solver is used to evaluate charged particle trajectories under the influence of the magnetic field and collisions. These findings offer initial insights into the mechanisms underlying the experimentally observed changes in emission patterns.

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In Categories: 1.Events, 1.HiSST 2025, Hypersonic Fundamentals & History
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