الفهرس 
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Abstract
Abstract Dielectric barrier discharge (DBD) is considered as a source of no) thermal plasma with a wide variety of industrial application and Active Flov Control; chemical process in microelectronic industry, polymer surface treatment, solar cell surface protection films, sterilization in biomedica applications. Its application extends to, flat panel display fabrication, ozom production, plasma spray, and many other rapidly growing areas. This large scale of industrial applications for DBD because of its scalability, effectivenes
and low cost.
In this thesis a multi-dimensional self-consistent plasma fluid model i·
formulated. This model is capable to simulate the dielectric barrier discharge
(DBD) in general. Also this model is capable to describe the discharge withir
the DBD actuator as a special topic presented in this thesis. The model gives (
complete description of a discharge, accounting for all its major physica
aspects: transport of particles, momentum transport, energy transport, plasm
chemistry, space and surface charge induced electric fields. This model is baser
on the basic first three moments of Boltzmann’s equation: mass, charge
momentum and energy conservation equations coupled to Poisson’s equation.
This model also is formulated into two methods. The first method of mode
utilizes the Local Field Approximation (LF A) while the second form utilizes thl
Mean Energy Approximation (MEA). The appropriate assumptions and all dat:
needed to define the model are also presented. We have introduced a new mode
for pure helium and nitrogen plasma chemistry which has succeeded to describ
the various processes between the discharge species within wide range 0
Pressures.
Also we present the detailed semi implicit numerical solution method fo
the system of fluid equations defining the DBD fluid model. The derivatives i
the equations are approximated by finite volume approach ernployiru
ii