Abo Bibliothek: Guest
Digitales Portal Digitale Bibliothek eBooks Zeitschriften Referenzen und Berichte Forschungssammlungen
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
SJR: 0.137 SNIP: 0.341 CiteScore™: 0.43

ISSN Druckformat: 1093-3611
ISSN Online: 1940-4360

High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v6.i1.50
7 pages

Modelling of plasma dynamics in coaxial IPD accelerator

Marek Rabinski
National Centre for Nuclear Research
Krzysztof Zdunek
Faculty of Materials Science, Warsaw University of Technology, 85 Narbutta, 02-524 Warsaw, Poland

ABSTRAKT

This paper presents the results of physico-mathematical modelling of plasma dynamics in a coaxial accelerator for IPD (Impulse Plasma Deposition) process. Metallic plasma is generated within the working gas due to electric discharge, ignited within inter-electrode region. Plasma spreads out in the form of a dynamically moving electric current sheet which is accelerated by the Lorentz force. Conditions favourable for evaluation of the Rayleigh-Taylor instability on the current sheet surface have been found during the computational studies of plasma movement. Appearance of this phenomenon explains non-uniform phase composition and morphology of coatings. By modifying the design of the plasma accelerator, we succeeded in reducing substantially R-T instability and in obtaining alpha-Al2O3 coatings instead of common gamma-Al2O3.
Proposed model, which is still being modified, does not yet take into account the effect of plasma being enriched with the products of the electrodes erosion. Nevertheless preliminary results have been obtained, accounting for the influence of eroded material on the dynamics of the discharge. Even at this stage the results of computer simulation are in semi-quantitative agreement with experimental observations.


Articles with similar content:

Numerical Investigation of Dissolution Reaction between UO2 and Molten Zry-4 using MPS method
3rd Thermal and Fluids Engineering Conference (TFEC), Vol.22, 2018, issue
Wenxi Tian, Suizheng Qiu, Ronghua Chen, G. H. Su, Yonglin Li
High-Power AC Arcs in Metallurgical Furnaces
Progress in Plasma Processing of Materials, 2001, Vol.0, 2001, issue
Jon Arne Bakken, V.G. Sevastyanenko, Liping Gu, G. A. Saevarsdottir
6.3 Interaction of a Molten U02 Pool and Its Supporting Structure Analyzed in a 2-D Geometry
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 1980, issue
Leonardo Castellano, L. Biasi, A. Colombo, H. Holtbecker
Numerical Simulation of Water Entry of Seafloor Mining Tool with Free Fall Motion
International Journal of Fluid Mechanics Research, Vol.38, 2011, issue 3
Shaojun Liu, Xiaozhou Hu
TRANSPORT OF DUST IN LOW-PRESSURE RF DISCHARGES
High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes, Vol.8, 2004, issue 1
V. Land, W. J. Goedheer, M. R. Akdim