Study of the specific features of pulsed-plasma generation in air at atmospheric pressure

• Published in: Journal of engineering physics and thermophysics Vol. 84; no. 5; pp. 1108 - 1113
• Main Authors: Chivel’, Ya. A., Kuznechik, O. O., Min’ko, D. V., Nikonchuk, I. S., Chumakov, A. V., Belyavin, K. E.
• Format: Journal Article
• Language: English
• Published: Boston Springer US 01-09-2011; Springer; Springer Nature B.V
• Subjects: Algorithms; Classical Mechanics; Comparative analysis; Complex Systems; Engineering; Engineering Thermodynamics; Heat and Mass Transfer; Industrial Chemistry/Chemical Engineering; Plasma physics; Thermodynamics; pulsed plasma; air pulsed-plasma treatment; pulsed plasma flow; temperature; pressure; high-voltage power-supply unit; acoustic noise
• ISSN: 1062-0125; 1573-871X
• DOI: 10.1007/s10891-011-0573-x

The structural scheme and operational characteristics of a pulse-plasma device generating a pulsed plasma in air at atmospheric pressure are presented. The functional scheme and the operation algorithm for a high-voltage power supply are given. It is shown that the pulsed-plasma device can generate air plasma flows with a frequency of 1–10 Hz and maximum parameters of pressure, temperature, and velocity of 6.5 MPa, 12,000 K, 4 km ⁄ s, and 110 dB
A
, respectively. Comparative analysis is presented of these quantities with characteristics of the plasma flow generated by the detonation pulsed-plasma device, which uses an air-propane mixture as the plasma-forming substance. It is shown that replacing the air-propane gas mixture with air provides a 70 dB
A
decrease in the noise level of the pulsed-plasma treatment. Recommendations are given as to using the pulsed-plasma device for surface strengthening of the instrument and parts of the machine.