Special aspects of vortex flow generation under conditions of pulsed magnetohydrodynamic interaction near the surface
M.A. Yadrenkin, Yu.V. Gromyko
Khristianovich Institute of Theoretical and Applied Mechanics SB RAS, Novosibirsk, Russia
Keywords: pulsed arc discharge, magnetic field, wall flow structure, particle image velocimetry, PIV tomography
Abstract
The spatial evolution of the flow structure formed by the movement of a submillimeter pulsed arc discharge in a magnetic field near a flat dielectric surface was studied in detail using optical methods (Schlieren method and PIV tomography). Due to good controllability of the dynamic and electrical characteristics of the discharge with high precision synchronization of the equipment, a high degree of detail of the flow pattern on small scales was achieved. The formation of a transversely located toroidal vortex propagating in the direction of the generated electromagnetic force is shown. The formation of a secondary flow in the tail of the jet was detected, which can be explained by the ejection of the surrounding gas into the region of reduced density.
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