Neon gazında oluşan Dbd nin nümerik olarak araştırılması: Farklı akışkan modellerinin etkileri

The work deals with numerical modelling of dielectric barrier discharge (DBD) in Neon gas. The DBD models are based on the drift-diffusion theory of gas discharges. Two different approaches, namely, the so called simple and extended fluid models, are followed. Within the simple fluid model, the ionization rate is approximated by the Townsend formula as function of the local electric field. In the framework of the extended fluid model, the electron transport (mobility and diffusion) coefficients as well as the rates of the electron induced plasma-chemical reactions are determined as functions of the electron mean energy. These data are determined from solution of the electron Boltzmann equation, by using Bolsig+ solver and verified by Comsol Multiphysics package. The elecron kinetic coefficients are also computed assuming Maxwellian eedf. Numerical simulations are spatially one-dimensional, carried out using Comsol Multiphysics. The effect of different modelling approaches on the characteristics of DBD is investigated.