Simulation of the ablation process of meteorites under laboratory conditions, using supersonic plasma flows

Astronomy and Astrophysics – Astronomy

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Ablation, Atmospheric Entry Simulation, Boundary Layer Plasmas, Magnetohydrodynamic Flow, Meteor Trails, Supersonic Flow, Barrier Layers, Dynamic Models, Metal Plates, Metal Surfaces, Plasma Temperature, Plasma Waves, Shock Wave Interaction

Scientific paper

Plasma flows at Mach numbers on the order of 4 were used to study the ablation mechanism of meteors. The experimental data and photographs obtained for metals indicate that ablation and removal of the liquid mass is the principal mechanism of disintegration, in particular, for iron meteorites. The degree of disintegration is higher when a barrier boundary layer forms on the surface of the metal; the ablation process is much less intense in the absence of a barrier layer. However, the ablation process also depends on the physicochemical properties of the test materials.

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