Optical Diagnostics of a Gliding Arc Discharge at Atmospheric Pressure
(2016) p.19-51- Abstract
A gliding arc discharge can be generated between two diverging electrodes and extended by a turbulent gas flow to form a plume of stable non-thermal plasmas sustained at atmospheric pressure. Gliding arc discharge is rather complicated since it involves plasma chemistry, flow dynamics and discharge-turbulence interaction. Optical techniques, especially laser-based methods, are able to perform in-situ and non-intrusive diagnostics with high temporal and spatial resolutions, as well as species-specific visualization, for gaining a deeper inside of discharge characteristics. Spatiotemporally resolved characteristics of the gliding arc discharge were investigated by recording the voltage and current waveforms simultaneously synchronized... (More)
A gliding arc discharge can be generated between two diverging electrodes and extended by a turbulent gas flow to form a plume of stable non-thermal plasmas sustained at atmospheric pressure. Gliding arc discharge is rather complicated since it involves plasma chemistry, flow dynamics and discharge-turbulence interaction. Optical techniques, especially laser-based methods, are able to perform in-situ and non-intrusive diagnostics with high temporal and spatial resolutions, as well as species-specific visualization, for gaining a deeper inside of discharge characteristics. Spatiotemporally resolved characteristics of the gliding arc discharge were investigated by recording the voltage and current waveforms simultaneously synchronized with instantaneous images of the plasma columns captured by high-speed photography. The true instantaneously optical and electrical parameters of the highly dynamic plasma columns can be revealed. Three-dimensional (3D) particle tracking velocimetry (PTV) has been used to determine the 3D flow velocity in the gliding arc discharge. Instantaneous 3D velocities of the tracer particles and the 3D structure of the plasma columns are reconstructed so as to determine the 3D plasma length and the 3D slip velocity. OH is an important radical that can be generated by gliding arc discharges in humid air. Planar laser-induced fluorescence measurements demonstrate that ground-state OH is distributed around the plasma column with a hollow structure and that the thickness of the OH is much greater than that of the plasma column. The gas temperature of the gliding arc discharge was obtained using planar laser-induced Rayleigh scattering. Turbulent effects were found to play an important role in determining the OH distribution and the dynamics of the gliding arc discharge.
(Less)
- author
- Zhu, Jiajian LU ; Kusano, Yukihiro and Li, Zhongshan LU
- organization
- publishing date
- 2016-01-01
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- gliding arc discharge, non-thermal plasma, optical diagnostics, planar laserinduced fluorescence
- host publication
- Atmospheric Pressure Plasmas : Processes, Technology and Applications - Processes, Technology and Applications
- pages
- 33 pages
- publisher
- Nova Science Publishers, Inc.
- external identifiers
-
- scopus:85153051480
- ISBN
- 9781634852142
- 9781634851800
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2016 by Nova Science Publishers, Inc. All rights reserved.
- id
- 6f0f8270-ea24-4084-a179-aa267c1b5cae
- date added to LUP
- 2025-01-27 09:03:05
- date last changed
- 2025-04-07 14:39:40
@inbook{6f0f8270-ea24-4084-a179-aa267c1b5cae,
abstract = {{<p>A gliding arc discharge can be generated between two diverging electrodes and extended by a turbulent gas flow to form a plume of stable non-thermal plasmas sustained at atmospheric pressure. Gliding arc discharge is rather complicated since it involves plasma chemistry, flow dynamics and discharge-turbulence interaction. Optical techniques, especially laser-based methods, are able to perform in-situ and non-intrusive diagnostics with high temporal and spatial resolutions, as well as species-specific visualization, for gaining a deeper inside of discharge characteristics. Spatiotemporally resolved characteristics of the gliding arc discharge were investigated by recording the voltage and current waveforms simultaneously synchronized with instantaneous images of the plasma columns captured by high-speed photography. The true instantaneously optical and electrical parameters of the highly dynamic plasma columns can be revealed. Three-dimensional (3D) particle tracking velocimetry (PTV) has been used to determine the 3D flow velocity in the gliding arc discharge. Instantaneous 3D velocities of the tracer particles and the 3D structure of the plasma columns are reconstructed so as to determine the 3D plasma length and the 3D slip velocity. OH is an important radical that can be generated by gliding arc discharges in humid air. Planar laser-induced fluorescence measurements demonstrate that ground-state OH is distributed around the plasma column with a hollow structure and that the thickness of the OH is much greater than that of the plasma column. The gas temperature of the gliding arc discharge was obtained using planar laser-induced Rayleigh scattering. Turbulent effects were found to play an important role in determining the OH distribution and the dynamics of the gliding arc discharge.</p>}},
author = {{Zhu, Jiajian and Kusano, Yukihiro and Li, Zhongshan}},
booktitle = {{Atmospheric Pressure Plasmas : Processes, Technology and Applications}},
isbn = {{9781634852142}},
keywords = {{gliding arc discharge; non-thermal plasma; optical diagnostics; planar laserinduced fluorescence}},
language = {{eng}},
month = {{01}},
pages = {{19--51}},
publisher = {{Nova Science Publishers, Inc.}},
title = {{Optical Diagnostics of a Gliding Arc Discharge at Atmospheric Pressure}},
year = {{2016}},
}