"Инженерно-физический журнал"
Издается в АНК "Институт тепло- и массообмена им. А.В. Лыкова НАН Беларуси"
Адрес редакции и издателя ИФЖ
UDC 621.387.143.014.31
A. Marotta , L. I. Sharakhovsky and V. N. Borisyuk
HEAT TRANSFER AND PLASMATRON ELECTRODE EROSION
A simple thermophysical model is proposed for cold
electrode erosion in electric arc heaters. The
model regards erosion as characterized by an
effective enthalpy for the change of state of the
electrode material in the arc spot from solid to
plasma. We show that the erosion problem can be
represented by a system of three simple equations,
based on the one -dimensional heat diffusion
equation. The total heat flux in the arc spot can
be represented by thermal volt-equivalent. The
magnetically driven arc rotating between ring
copper electrodes has been used for the experiments.
The present model enables to reveal the relative
significance of the different parameters in the
erosion process and to predict the erosion behavior
in cold electrodes electric arc heaters over a wide
range of parameters.
Instituto de Fisica "Gleb Wataghin,"
Universidade Estadual de Campinas,
Sao Paulo, Brasil,
Luikov Heat and Mass Transfer Institute, Minsk, Belaruss.
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Научно-технические и теоретические разработки в области тепло- и
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