Speaker
Lucas W S Crispim
Description
See the full Abstract at http://ocs.ciemat.es/EPS2018ABS/pdf/P4.3016.pdf
Modelling 1D Dielectric Barrier Discharge in Nitrogen Mixtures
Lucas W S Crispim1 , Hallak, P. H.1 , Maikel Y Ballester2
1 Programa de Pós-Graduação em Modelagem Computacional UFJF, Juiz de Fora, Brasil
2 Departamento de Física UFJF, Juiz de Fora, Brasil
This work aims at analyzing the temporal evolu-
1012
tion of species (Fig. 1), heating and other physical e N2(A)
1010 N N2(B)
108
quantities in a gaseous mixture subjected to elec-
−3
106
Density/cm
104
tric discharges. The mathematical model includes 102
100
the application of high voltage in a gaseous mix- 10
−2
−4
10
ture between electrodes. The simulation domain is 1.0 2.0 3.0 4.0 5.0 6.0 7.0
Radius/10−1 mm
a cartesian one-dimensional region. In the macro-
scopic perspective, the effects of transport, i.e. heat
Figure 1: Species density at 1.0×10−6 s
transfer and mass, are considered [1], microcopies,
effects of heat generation due to electronic collisions and chemical reactions are also consid-
ered [2]. Reaction rate and transport coefficients depending upon the electron energy distribu-
tion function are calculated from collision cross-section data by solving the electron Boltzmann
equation (BE). The application of a technique of separation of operators in the mathematical
model provides to two sub-models, a global for macroscopic effects and another one containing
microscopic effects of the plasma. A discrete sub-model for the electron-species and species-
species collisions [3] is solved in ZDPlasKin [4], a zero-dimensional plasma analysis tool, while
BE solver BOLSIG+ [5] required for solved electron energy distribution function. Nitrogen is
used as an initial gaseous mixture in the simulation. Due to the high computational cost, a do-
main decomposition with Message Passing Interface (MPI) while OpenMP is used to solving a
set of partial differential equations of each component in the gas mixture [6].
References
[1] A. W. Date. Analytic Combustion: With Thermodynamics, Chemical Kinetics and Mass Transfer. Cambridge
University Press, 2011.
[2] A. Fridman. Plasma chemistry. Cambridge university press, 2008.
[3] M. Capitelli, C. Ferreira, B. Gordiets, and A. Osipov. Plasma kinetics in atmospheric gases, 2001.
[4] S. Pancheshnyi, B. Eismann, G. Hagelaar, and L. Pitchford. Zdplaskin: a new tool for plasmachemical simu-
lations. Bulletin of the American Physical Society, 53, 2008.
[5] G. Hagelaar and L. Pitchford. Solving the boltzmann equation to obtain electron transport coefficients and
rate coefficients for fluid models. Plasma Sources Science and Technology, 14(4):722, 2005.
[6] P. Pacheco. An introduction to parallel programming. Elsevier, 2011.
