Journal of Engineering Physics and Thermophysics
is a translation of Inzhenerno-fizicheskii Zhurnal,
a publication of the Academic Scientific Complex
"A. V. Luikov Heat and Mass Transfer Institute"
of the National Academy of Sciences of Belarus
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CONCERNING THE MECHANISM OF THERMAL
DESTABILIZATION OF AN ARC DISCHARGE
L. P. Podenok, L. I. Sharakhovskii,
V. D. Shimanovich, and O. I. Yas'ko
UDC 537.523
We examine the destabilization of arc discharges blown
by a stream of a heated gas in the channel of a vortex plasmatron.
A multitude of destabilizing factors of hydrodynamic and thermal origin
are noted. We suggest a model of thermal destabilization due to sources
of local heat generation. Experimental data on temperature fluctuations
in the columns of argon and helium arcs support the model.
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