Conference proceeding
Simulation of atmospheric pressure non-thermal plasma discharges for surface decontamination applications
PLASMA ASSISTED DECONTAMINATION OF BIOLOGICAL AND CHEMICAL AGENTS
01 Jan 2008
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Numerical simulations are conducted to characterize atmospheric pressure plasma discharges for surface decontamination applications. A self consistent two-dimensional hybrid model is developed to simulate the atmospheric pressure radio frequency (RF) plasma discharges in helium-oxygen mixtures. Numerical simulations are carried out for the plasma generated between an annulus electrode configuration with gas flow in between the electrodes and a surface to be decontaminated in front of the plasma afterglow. Basic plasma properties such as electron number density, radical, ion and excited species number densities, gas temperature, electric field and electron temperature are studied. The simulations indicated the discharge to operate in the cc mode at low power. In the alpha mode the discharge was found to be uniform and volume dominated. At high power the discharge was found to transition to gamma mode, with peak ionic species near the electrode surfaces. The discharge was also found to constrict in the axial direction. In both the modes He-2*, O, O-2 ((1)Delta(g)) and O-3 were the dominant species in the after glow of the discharge. O, O-2 ((1)Delta(g)) and O-3 are key species for surface decontamination. Peak gas temperature predictions indicate the discharge to be a non-thermal non-equilibrium discharge. However the peak temperature of the discharge while in the gamma mode was similar to 150 K higher than that at the cc mode.
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Details
- Title
- Simulation of atmospheric pressure non-thermal plasma discharges for surface decontamination applications
- Creators
- T. Farouk - Drexel Univ, Dept Mech Engn & Mech, Philadelphia, PA 19104 USAB. Farouk - Drexel UniversityA. Gutsol - Drexel Univ, Dept Mech Engn & Mech, Philadelphia, PA 19104 USAA. Fridman - Drexel University
- Contributors
- S Guceri (Editor)A Fridman (Editor)
- Publication Details
- PLASMA ASSISTED DECONTAMINATION OF BIOLOGICAL AND CHEMICAL AGENTS
- Series
- NATO Science for Peace and Security Series A-Chemistry and Biology
- Publisher
- Springer Nature
- Number of pages
- 10
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Mechanical Engineering and Mechanics
- Web of Science ID
- WOS:000257859800024
- Scopus ID
- 2-s2.0-65549115403
- Other Identifier
- 991019173546304721
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InCites Highlights
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- Web of Science research areas
- Engineering, Biomedical
- Engineering, Mechanical