Numerical investigation of the spatiotemporal distribution of chemical species in an atmospheric surface barrier-discharge

@article{Hasan2016NumericalIO,
  title={Numerical investigation of the spatiotemporal distribution of chemical species in an atmospheric surface barrier-discharge},
  author={Mohammad I. Hasan and James L. Walsh},
  journal={Journal of Applied Physics},
  year={2016},
  volume={119},
  pages={203302}
}
  • M. HasanJ. Walsh
  • Published 27 May 2016
  • Environmental Science, Physics
  • Journal of Applied Physics
Using a one dimensional time dependent convection-reaction-diffusion model, the temporal and spatial distributions of species propagating downstream of an atmospheric pressure air surface barrier discharge was studied. It was found that the distribution of negatively charged species is more spatially spread compared to positive ions species, which is attributed to the diffusion of electrons that cool down and attach to background gas molecules, creating different negative ions downstream of the… 

Figures from this paper

Influence of gas flow velocity on the transport of chemical species in an atmospheric pressure air plasma discharge

This paper reports on a numerical study of the transport of reactive chemical species generated in an atmospheric-pressure air plasma discharge under the influence of a high velocity flowing gas.

The transport behaviour of OH radicals in atmospheric pressure surface micro-discharge

This work presents the transport behaviour of OH radicals in an atmospheric pressure pulse-modulated surface micro-discharge in helium. Laser-induced fluorescence is employed to measure the time

Dominant heating mechanisms in a surface barrier discharge

In computational models of atmospheric pressure surface barrier discharges (SBDs) the role of heating of the dielectric material and the quiescent gas is often neglected, impacting the accuracy of

Influence of electrode geometry on the transport of OH radicals in an atmospheric pressure surface micro-discharge

Atmospheric pressure surface micro-discharge (SMD) has recently received considerable interest as an efficient source for its potential applications in biomedical, agricultural and environmental

Dynamics of plasma streamers in a helium surface micro-discharge array at atmospheric pressure

The dynamic evolution of plasma optical emission from an array of surface micro-discharges has been investigated by optical emission imaging. The array was operated in helium at atmospheric pressure

Impact of electrode geometry on an atmospheric pressure surface barrier discharge

Several of the key characteristics of an atmospheric pressure surface barrier discharge (SBD) are heavily dependent on the geometrical configuration of the plasma generating electrodes. This paper

Dynamics of an atmospheric pressure planar plume with two naked electrodes excited by an alternating current voltage

A large-scale plasma plume has been generated downstream of an argon flow with two naked electrodes excited by an alternating current voltage. Complicated dynamics under various dissipated powers are

The distribution of OH in surface micro-discharge with different electrode widths by laser-induced fluorescence

Cold atmospheric plasma has been successfully applied in the field of biomedicine. One of the most pressing challenge is the development of plasma devices, for example, large-area application in

Surface barrier discharges for Escherichia coli biofilm inactivation: Modes of action and the importance of UV radiation

It is suggested that plasma generated UV is an important component for microbial inactivation when using a surface barrier discharge; however, it is not through the conventional pathway of direct DNA damage, rather through the synergistic interaction between liquid in the biofilm matrix and long-lived chemical species created by the discharge.

Effective Fungal Spore Inactivation with an Environmentally Friendly Approach Based on Atmospheric Pressure Air Plasma

High atmospheric pressure air plasma generated by a surface barrier discharge is presented as an innovative green chemical method for fungal inactivation, with the potential to become an effective replacement for conventional chemical disinfection agents, such as Virkon.

References

SHOWING 1-10 OF 23 REFERENCES

Plasma chemistry model of surface microdischarge in humid air and dynamics of reactive neutral species

We present a numerical model of a surface microdischarge (SMD) in humid air at atmospheric pressure. Our model includes over 50 species and 600 elementary reactions and consists of two, coupled

Electrohydrodynamic force and aerodynamic flow acceleration in surface dielectric barrier discharge

Surface discharges created in dielectric barrier discharge (DBD) configurations have been proposed as actuators for flow control in aerodynamic applications. We focus on DBDs operating in a glow

Efficient modeling of atmospheric pressure surface micro-discharge plasma chemistry

A key challenge in modeling atmospheric pressure plasma chemistry is to incorporate a wide range of time and length scales. Electron and ion dynamics often evolve over shorter time scales and smaller

Solving the Boltzmann equation to obtain electron transport coefficients and rate coefficients for fluid models

Fluid models of gas discharges require the input of transport coefficients and rate coefficients that depend on the electron energy distribution function. Such coefficients are usually calculated

Development of a nanosecond pulsed HV atmospheric pressure plasma source: preliminary assessment of its electrical characteristics and degree of thermal nonequilibrium

This paper discusses the development and characteristics of a distributed nanosecond-pulsed glow-like discharge plasma in air at atmospheric pressure. The produced pulse is of 6.4 kV with duration at

Characterization of a surface dielectric barrier discharge plasma sustained by repetitive nanosecond pulses

The paper discusses experimental characterization of a surface dielectric barrier discharge plasma sustained by repetitive, high-voltage, nanosecond duration pulses. The discharge pulse energy is

Atmospheric Pressure Humid Argon DBD Plasma for the Application of Sterilization - Measurement and Simulation of Hydrogen, Oxygen, and Hydrogen Peroxide Formation

Hydrogen, oxygen, and hydrogen peroxide have been measured downstream of an atmospheric pressure humid argon dielectric barrier discharge. The yield of the three species was studied as a function of

New Nonthermal Atmospheric-Pressure Plasma Sources for Decontamination of Human Extremities

The research and development of plasma sources, which can be used for therapeutic applications in the new and emerging field of plasma medicine, has gained more and more interest during recent years.

The bactericidal effect of surface micro-discharge plasma under different ambient conditions

A series of experiments on the bactericidal properties of plasmas using a surface micro-discharge (SMD) device in an atmosphere under different ambient temperatures and humidities was carried out.