Abstract
Numerical simulation of charge density produced in plasma actuators is dependent upon the development of models dealing with electrical properties. The main aim of this work is to investigate the characteristics surface charge density and space charge density of DBD plasma actuator. A simple design of surface dielectric barrier discharge plasma actuator is used in the study. The discharge gas was N2:H2 mixture with applied voltage equal to 1.5 kV. A theoretical plasma model is used to establish the charge density details. Results show that surface charge density increased in value and spread in width alone the exposed electrode as the voltage increased and reached to the amplitude value.
 HIGHLIGHTS
 
 In plasma diagnostics studies, charge density is one of the important parameter
 The paper includes simulation to charge density in plasma actuator with two gases which are N2 and H2
 The results very useful to follow up the electric field and flow of gases
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