scholarly journals Numerical study of supersonic plasma torch

2004 ◽  
Vol 53 (3) ◽  
pp. 788
Author(s):  
Yuan Xing-Qiu ◽  
Li Hui ◽  
Zhao Tai-Zhe ◽  
Wang Fei ◽  
Guo Wen-Kang ◽  
...  
Keyword(s):  
Plasma Torch ◽  
Numerical Study ◽  
Supersonic Plasma

Numerical Study on the Acetylene Concentration in the Hydrogen-Carbon System in a Hydrogen Plasma Torch

2009 ◽  
Vol 11 (3) ◽  
pp. 321-326 ◽  
Author(s):  
Chen Longwei ◽  
Shen Jie ◽  
Shu Xingsheng ◽  
Fang Shidong ◽  
Zhang Lipeng ◽  
...  
Keyword(s):  
Plasma Torch ◽  
Numerical Study ◽  
Hydrogen Plasma ◽  
Carbon System

scholarly journals Wear resistance coatings of nickel alloys obtained by supersonic plasma torch

2017 ◽  
Vol 38 (5) ◽  
pp. 395-400
Author(s):  
V. I. Kuzmin ◽  
N. A. Rudenskaya ◽  
N. V. Sokolova ◽  
D. V. Sergachev
Keyword(s):  
Wear Resistance ◽  
Plasma Torch ◽  
Nickel Alloys ◽  
Supersonic Plasma ◽  
Wear Resistance Coatings

scholarly journals Plasma torch for supersonic plasma spray at atmospheric pressure

2016 ◽  
Vol 237 ◽  
pp. 351-360 ◽  
Author(s):  
F.R. Caliari ◽  
F.S. Miranda ◽  
D.A.P. Reis ◽  
G.P. Filho ◽  
L.I. Charakhovski ◽  
...  
Keyword(s):  
Plasma Spray ◽  
Atmospheric Pressure ◽  
Plasma Torch ◽  
Supersonic Plasma

scholarly journals Application of functional coatings by supersonic thermal plasma flows

2021 ◽  
Vol 2131 (5) ◽  
pp. 052053
Author(s):  
V I Kuzmin ◽  
I P Gulyaev ◽  
D V Sergachev ◽  
B V Palagushkin ◽  
O Y Lebedev
Keyword(s):  
Plasma Torch ◽  
High Speed ◽  
Laval Nozzle ◽  
Heating Temperature ◽  
Thermal Spraying ◽  
Functional Coatings ◽  
Melting Points ◽  
Supersonic Plasma ◽  
De Laval Nozzle ◽  
Injection Unit

Abstract Development of modern high-speed technologies for thermal spraying proves that deposition of high-quality dense coatings requires velocity of sprayed particles to be 600 m/s and above. Plasma spraying is the most versatile and highly productive deposition method of various functional coatings without any limitations on the melting points of the sprayed materials. Present work describes a DC plasma torch designed for operation in a supersonic mode. The supersonic plasma torch features de Laval nozzle, utilization of air as a plasma-forming gas, and annular injection unit for delivery of the powder to the plasma jet. The comparison of NiCr and NiAl coatings deposited both in subsonic and supersonic modes are presented. Methods for further increasing the sprayed particles’velocity and the requirements for their heating temperature are proposed.

PLASMA FLOW CHARACTERISTICS INSIDE THE SUPERSONIC D.C. PLASMA TORCH

2005 ◽  
Vol 14 (02) ◽  
pp. 225-238 ◽  
Author(s):  
X. Q. YUAN ◽  
T. Z. ZHAO ◽  
W. K. GUO ◽  
P. XU
Keyword(s):  
Plasma Flow ◽  
Plasma Torch ◽  
Energy Transport ◽  
Flow Characteristics ◽  
Viscous Effects ◽  
Supersonic Plasma ◽  
Arc Current ◽  
Velocity Pressure ◽  
Laminar State ◽  
Made In

A magnetohydrodynamic (MHD) model, which describes supersonic plasma flow inside the torch, is presented in this paper. It is a two-dimensional model but includes the K -epsilon model of turbulence, the gas viscous effects and compressible effects. The PHOENICS software is used for solving the governing equations, i.e. the conservation equations of mass, momentum, and energy together with the equations describing the K -epsilon model of turbulence. The calculated arc voltages and gas inflow rates are consistent with the experimental results when arc current and the working gas are the same as experiment. The plasma flow characteristics inside the supersonic plasma torch are analyzed in detail. Temperature, velocity, pressure and Mach number contours are presented to show the flow characteristics. Comparisons between turbulent and laminar models are made in detail also, and the results show the turbulent enhanced momentum and energy transport inside the supersonic plasma torch has little effect on the whole discharge area. The plasma flow inside the supersonic torch is mainly in the laminar state.

scholarly journals Effect of vortex gas on the anode arc attachment behaviour inside the plasma torch: Numerical study

2020 ◽  
Author(s):  
Jyothikrishna Perambadur ◽  
Pradeep Shukla ◽  
Klimenko Alexander ◽  
Victor Rudolph ◽  
Kandasamy Ramachandran
Keyword(s):  
Plasma Torch ◽  
Numerical Study ◽  
Attachment Behaviour

Numerical study of the low-frequency atomic dynamics in a Lennard-Jones glass

1998 ◽  
Vol 77 (2) ◽  
pp. 473-484 ◽  
Author(s):  
M. Sampoli, P. Benassi, R. Dell'Anna,
Keyword(s):  
Numerical Study ◽  
Low Frequency ◽  
Lennard Jones
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