Document Type
Article
Publication Date
10-30-2014
Abstract
The effect of gas flow rate of helium and argon on the length of dielectric barrier discharge (DBD) jet generated under atmospheric pressure using an AC source is investigated. It is found that as the flow rate increases, the jet length increases up to a maximum length. Upon further increase in flow rate, it will cause the jet length to decrease. Visual inspection shows the jet to be of laminar flow when its length was increasing, and gets turbulent when the jet length decreases with increased flow rate. There is an obvious increment in jet length of argon DBD system when the applied voltage is increased from 8.8 kV to 11.0 kV, but not in helium. Spectral analysis reveals the DBD jet to comprise of emission lines of its constituent flow gas. In addition to that, emission lines of component gases (N2 and O) in ambient air and water vapour were also present. Upstream jet was obtained only in helium DBD jet at low flow rate but high applied voltage.
Keywords
Dielectric barrier discharge, Atmospheric pressure plasma jet
Divisions
PHYSICS
Funders
Ministry of Education, Malaysia,University of Malaya
Publication Title
Journal of Science and Technology in the Tropics
Volume
10
Issue
2
Publisher
Akademi Sains Malaysia & Confederation of Scientific & Technological Association in Malaysia (COSTAM)