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| A Numerical Study on the Frequency Effects of the Electrical Characteristics of the Pulsed Dielectric Barrier Discharge in Ar/O2 with High Oxygen Concentration at Atmospheric Pressure |
| Pan Guangsheng1,2, Tan Zhenyu1,2, Wang Xiaolong1,2, Pan Jie1,2, Huang Qiang1,2 |
1. School of Electrical Engineering Shandong University Jinan 250061 China;
2. Shandong Provincial Key Laboratory of UHV Transmission Technology and Equipment Jinan 250061 China |
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Abstract By means of a 1-D fluid model, the effects of frequency on the atmospheric-pressure Ar/O2 pulsed dielectric barrier discharge (DBD) under high oxygen concentrations (1%~5.0%) were investigated. Under the considered frequency range below 100kHz and oxygen concentrations, the frequency dependences of the discharge current densities were calculated and analyzed. The results show that there are two bipolar discharges, one occurs at the rising edge of Va and the other at the falling edge of Va. Under different oxygen concentrations, the peak values of the two bipolar discharges first reduce and then increase with the increase of frequency, that is, there is a minimum value, where the corresponding frequency of each discharge can be defined as the characteristic frequency. The oxygen concentration dependences of the two characteristic frequencies corresponding to the two bipolar discharges, respectively, are obtained. In addition, when the oxygen concentration is 3.0%, the dominated reaction pathways for the production and consumption of four reactive species (O, O(1D), O2(1Δg) and O3) and their contributions at different frequencies are also given.
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Received: 28 May 2016
Published: 30 October 2017
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2017, Vol. 32 
