JEPTER, Volume 74, Number 6, 2001 INVESTIGATION OF THE PROCESSES IN TORCHES FOR HIGH-SPEED GAS-PLASMA SPRAYING OF POWDER MATERIALS WITH THE USE OF THE FLOW-RATE METHOD OF ACTION ON THE FLOW V. I. Timoshenkoa, I. S. Belotserkovetsa, V. P. Galinskiia, V. Kh. Kadyrovb, V. M. Kisel'b, and Yu. I. Evdokimenkob

INVESTIGATION OF THE PROCESSES IN TORCHES FOR HIGH-SPEED 
GAS-PLASMA SPRAYING OFPOWDER MATERIALS WITH THE USE OF THE
FLOW-RATE METHOD OF ACTION ON THE FLOW
V. I. Timoshenko^a, I. S. Belotserkovets^a, 
V. P. Galinskii^a, V. Kh. Kadyrov^b,
V. M. Kisel'^b, and Yu. I. Evdokimenko^b

UDC 533.6.01+621.793

The comparative characteristic of torches with geometric 
and flow-rate methods of control of the characteristics of a two-phase 
flow are given. Based on the mathematical model proposed, the advantage 
of the flow-rate method is shown by calculation. By using particular 
examples, the estimates of the optimum values are given for the relation 
of the flow rates in feeding units and for the length of the heating 
portion for torches with a flow-rate method of control of the two-phase 
flow.

^aInstitute of Engineering Mechanics, National Academy 
of Sciences of Ukraine, Dnepropetrovsk, Ukraine; email: timoshenko@itm3.dp.ua; 
^bI. N. Frantsevich Institute of Problems of Material Science, 
National Academy of Sciences of Ukraine, Kiev, Ukraine; email: vuakysil@i.com.ua. 
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 74, No. 6, 
pp. 156-161, November-December, 2001. Original article submitted 
March 27, 2001.

JEPTER7492020018
JEPTER749208

INVESTIGATION OF THE PROCESSES IN TORCHES FOR HIGH-SPEED GAS-PLASMA SPRAYING OFPOWDER MATERIALS WITH THE USE OF THE FLOW-RATE METHOD OF ACTION ON THE FLOW