Numerical simulation of particle species behavior in atmosphere plasmas with different ionization degree

Pang, Xiaoyan; Ze-Chao, Deng; Li-Fang, Dong

doi:10.7498/aps.57.5081

Cited by 4 publications

(4 citation statements)

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“…, and others originated from some of the atmosphere chemistry literatures [4,15,18,19] . The quasi-steady-state approximation (QSSA) method [21] is used to solve the constant coefficient nonlinear equations.…”

Section: The Model and Numerical Simulationmentioning

confidence: 99%

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Influence of Ionization Degrees on Conversion of CO and CO₂in Atmospheric Plasma near the Ground

Pang¹,

Ze-Chao²,

Jia³

et al. 2014

Plasma Sci. Technol.

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A zero-dimensional model is used to study the processes of physical and chemical reactions in atmospheric plasma with different ionization degrees near the ground (0 km). The temporal evolutions of CO, CO2 and other main reactants (namely OH and O2), which affect the conversion of CO and CO2, are obtained for afterglow plasma with different initial values. The results show that the consumption rate of CO is largest when the initial electron number density ne0=10 12 cm −3 , i.e. the ionization degree is 0.000004%. The number density of CO2 is relatively small when ne0=10 16 cm −3 , i.e. the ionization degree is 0.04%, whereas they are very close under the condition of other ionization degrees. Considering the total number densities of CO and CO2 and the consumption rate of CO comprehensively, the best condition is ne0=10 13 cm −3 , i.e. the ionization degree is 0.00004% for reducing the densities of CO and CO2 in the atmospheric plasma. The temporal evolutions of N + , Ar + , CO + and CO + 2 are also shown, and the influences on the temporal evolutions of CO and CO2 are analyzed with increasing ionization degree.

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Section: The Model and Numerical Simulationmentioning

confidence: 99%

“…The quasi-steady-state approximation (QSSA) method [21] is used to solve the constant coefficient nonlinear equations. In our model the reaction rate equations are shown as follows [18,19] :…”

Section: The Model and Numerical Simulationmentioning

confidence: 99%

Influence of Ionization Degrees on Conversion of CO and CO₂in Atmospheric Plasma near the Ground

Pang¹,

Ze-Chao²,

Jia³

et al. 2014

Plasma Sci. Technol.

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show abstract

“…The quasi-steady-state approximation (QSSA) method [7] is used to solve the constant coefficient nonlinear equations. In our model the reaction rate equations are given as follows [1] :…”

Section: The Model and Numerical Simulationmentioning

confidence: 99%

“…The study of atmospheric plasmas has recently become extraordinary because of its low cost, convenient operation and comprehensive applications in industrial fields, environmental science [1] and national defense [2] .…”

Section: Introductionmentioning

confidence: 99%

Influence of Ionization Degrees on the Evolutions of Charged Particles in Atmospheric Plasma at Low Altitude

Pang¹,

Ze-Chao²,

Jia³

et al. 2012

Plasma Sci. Technol.

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A zero-dimensional model which includes 56 species of reactants and 427 reactions is used to study the behavior of charged particles in atmospheric plasmas with different ionization degrees at low altitude (near 0 km). The constant coefficient nonlinear equations are solved by using the Quasi-steady-state approximation method. The electron lifetimes are obtained for afterglow plasma with different initial values, and the temporal evolutions of the main charged species are presented, which are dominant in reaction processes. The results show that the electron number density decays quickly. The lifetimes of electrons are shortened by about two orders with increasing ionization degree. Electrons then attach to neutral particles and produce negative ions. When the initial electron densities are in the range of 10 10 ∼ 10 14 cm −3 , the negative ions have sufficiently high densities and long lifetimes for air purification, disinfection and sterilization. Electrons, O − 2 , O − 4 , CO − 4 and CO − 3 are the dominant negative species when the initial electron density ne0 ≤ 10 13 cm −3 , and only electrons and CO − 3 are left when ne0 ≥ 10 15 cm −3. N + 2 , N + 4 and O + 2 are dominant in the positive charges for any ionization degree. Other positive species, such as O + 4 , N + 3 , NO + , NO + 2 , Ar + 2 and H3O + • H2O, are dominant only for a certain ionization degree and in a certain period.

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Evolution of H2/O2 mixture plasma under different initial temperatures

Yu-Dan¹,

He²,

Wei³

et al. 2010

Acta Phys. Sin.

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This paper presents a numerical simulation of the evolution of the main particles in H2/O2 mixture plasma under different initial temperature, and gives the time-variation laws of the density of the main charged and neutral particles in plasma after discharge begins. The results show that the density of main active particles in H2/O2 mixture plasma is reduced with time, and the required time for the equilibrium of chemical reactions reduces with increasing initial temperature.

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Numerical simulation of particle species behavior in atmosphere plasmas with different ionization degree

Cited by 4 publications

References 0 publications

Influence of Ionization Degrees on Conversion of CO and CO₂in Atmospheric Plasma near the Ground

Influence of Ionization Degrees on Conversion of CO and CO₂in Atmospheric Plasma near the Ground

Influence of Ionization Degrees on the Evolutions of Charged Particles in Atmospheric Plasma at Low Altitude

Evolution of H2/O2 mixture plasma under different initial temperatures

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Numerical simulation of particle species behavior in atmosphere plasmas with different ionization degree

Cited by 4 publications

References 0 publications

Influence of Ionization Degrees on Conversion of CO and CO2in Atmospheric Plasma near the Ground

Influence of Ionization Degrees on Conversion of CO and CO2in Atmospheric Plasma near the Ground

Influence of Ionization Degrees on the Evolutions of Charged Particles in Atmospheric Plasma at Low Altitude

Evolution of H2/O2 mixture plasma under different initial temperatures

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Influence of Ionization Degrees on Conversion of CO and CO₂in Atmospheric Plasma near the Ground

Influence of Ionization Degrees on Conversion of CO and CO₂in Atmospheric Plasma near the Ground