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. Timoshenkoa, I. S. Belotserkovetsa, V. P. Galinskiia, V. Kh. Kadyrovb, V. M. Kisel'b, and Yu. I. Evdokimenkob 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