Publication details

Experimental study of gliding arc plasma channel motion: buoyancy and gas flow phenomena under normal and hypergravity conditions

Authors

POTOČŇÁKOVÁ Lucia ŠPERKA Jiří ZIKÁN Petr VAN LOON Jack J. W. A. BECKERS Job KUDRLE Vít

Year of publication 2017
Type Article in Periodical
Magazine / Source Plasma Sources Science and Technology
MU Faculty or unit

Faculty of Science

Citation
Web http://iopscience.iop.org/0963-0252/26/4/045014
Doi http://dx.doi.org/10.1088/1361-6595/aa5ee8
Field Plasma physics
Keywords gliding arc; hypergravity; gas drag; buoyancy; flow dynamics; atmospheric pressure plasma; centrifuge
Attached files
Description The details of plasma channel motion are investigated by frame-by-frame image analysis of high speed recording of a gliding arc. The gliding arc is operated in several noble gases at various flow rates, voltages and artificial gravity levels. Several peculiarities in evolution of individual glides are observed, described and discussed, such as accelerating motion of plasma channel or shortcutting events of various kinds. Statistics of averaged parameters are significantly different for buoyancy and gas drag dominated regimes, which is put into relation with differing flow patterns for hypergravity and high gas flow.
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