"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.

Как приобрести ИФЖ непосредственно у издателя
Научно-технические и теоретические разработки в области тепло- и массообмена
(по материалам рекламы в ИФЖ)

IFZH7492019975 IFZH749205