Measurement of hydroxyl radicals in an atmospheric pressure discharge plasma by using laser-induced fluorescence

2000 ◽  
Vol 36 (1) ◽  
pp. 82-86 ◽  
Author(s):  
R. Ono ◽  
T. Oda
Keyword(s):  
Hydroxyl Radicals ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Laser Induced Fluorescence ◽  
Pressure Discharge ◽  
Atmospheric Pressure Discharge

Kinetic study of key species and reactions of atmospheric pressure pulsed corona discharge in humid air

2021 ◽  
Author(s):  
Yongkang Peng ◽  
Xiaoyue Chen ◽  
Yeqiang Deng ◽  
Lan Lei ◽  
Zhan Haoyu ◽  
...  
Keyword(s):  
Chemical Reactions ◽  
Chemical Reaction ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Reaction Rates ◽  
Global Model ◽  
Discharge Process ◽  
Humid Air ◽  
Pressure Discharge ◽  
Atmospheric Pressure Discharge

Abstract The traditional corona discharge fluid model considers only electrons, positive and negative ions, and the discharge parameters are determined using the simplified weighting method involving the partial pressure ratio. Atmospheric pressure discharge plasma in humid air involves three main neutral gas molecule types: N2, O2, and H2O(g). However, in these conditions, the discharge process involves many types of particles and chemical reactions, and the charge and substance transfer processes are complex. At present, the databases of plasma chemical reaction equations are still expanding based on scholarly research. In this study, we examined the key particles and chemical reactions that substantially influence plasma characteristics. In summarizing the chemical reaction model for the discharge process of N2–O2–H2O(g) mixed gases, 65 particle types and 673 chemical reactions were investigated. On this basis, a global model of atmospheric pressure humid air discharge plasma was developed, with a focus on the variation of charged particles densities and chemical reaction rates with time under the excitation of a 0–200 Td pulsed electric field. Particles with a density greater than 1% of the electron density were classified as key particles. For such particles, the top ranking generation or consumption reactions (i.e., where the sum of their rates was greater than 95% of the total rate of the generation or consumption reactions) were classified as key chemical reactions On the basis of the key particles and reactions identified, a simplified global model was derived. A comparison of the global model with the simplified global model in terms of the model parameters, particle densities, reaction rates (with time), and calculation efficiencies demonstrated that both models can adequately identify the key particles and chemical reactions reflecting the chemical process of atmospheric pressure discharge plasma in humid air. Thus, by analyzing the key particles and chemical reaction pathways, the charge and substance transfer mechanism of atmospheric pressure pulse discharge plasma in humid air was revealed, and the mechanism underlying water vapor molecules’ influence on atmospheric pressure air discharge was elucidated.

Geometry Effects of SDBD Actuator on Atmospheric-Pressure Discharge Plasma Airflow Acceleration

2015 ◽  
Vol 43 (10) ◽  
pp. 3653-3661 ◽  
Author(s):  
Liang Yang ◽  
Hui-Jie Yan ◽  
Xiao-Hua Qi ◽  
Shu-Xia Zhao ◽  
Chun-Sheng Ren
Keyword(s):  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Pressure Discharge ◽  
Atmospheric Pressure Discharge ◽  
Geometry Effects

SYNGAS PRODUCTION FROM PROPANE-BUTANE MIXTURES USING A HIGH-VOLTAGE ATMOSPHERIC PRESSURE DISCHARGE PLASMA

2016 ◽  
Vol 47 (11) ◽  
pp. 1057-1072
Author(s):  
Feraih Sh. Alenazey ◽  
Ahmed A. Al-Harbi ◽  
A. P. Chernukho ◽  
Yuri M. Dmitrenko ◽  
Alexei N. Migoun ◽  
...  
Keyword(s):  
High Voltage ◽  
Atmospheric Pressure ◽  
Discharge Plasma ◽  
Syngas Production ◽  
Pressure Discharge ◽  
Atmospheric Pressure Discharge ◽  
Propane Butane
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