研究目的
To investigate the optical emission spectroscopy of dielectric barrier discharge (DBD) plasma actuators at different atmospheric pressures and various concentrations of Ar.
研究成果
The study found that decreasing pressure and increasing Ar concentration enhance the emission intensities of DBD plasma discharge, with significant improvements observed at pressures below 0.04 Mpa and Ar concentrations over 50%. These conditions are beneficial for improving the performance of DBD plasma actuators.
研究不足
The study was limited to pressures from 0.02 to 0.1 Mpa and Ar concentrations up to 80%. The effects of other gases or higher pressures and concentrations were not investigated.
1：Experimental Design and Method Selection:
The experiment was conducted using an asymmetrical electrodes configuration DBD plasma actuator, driven by a sinusoidal voltage with an amplitude of 12 kV and a frequency of 1 kHz. Optical emission spectroscopy was used to diagnose the plasma discharge.
2：Sample Selection and Data Sources:
The experiment was performed at pressures from 0.02 to 0.1 Mpa in air mixed with various concentrations of Ar (0%, 20%, 50%, and 80%).
3：02 to 1 Mpa in air mixed with various concentrations of Ar (0%, 20%, 50%, and 80%).
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The setup included a power supply system (MODEL Hossoni SVC-2000 VA, Trek 20/20C-HS, Agilent 33520B), a discharge reactor system with asymmetrical electrodes, a gas supply and pressure control system, and an optical detection system (ICCD camera).
4：Experimental Procedures and Operational Workflow:
The discharge images and optical emission spectra were recorded under different pressures and Ar concentrations. The effects of these parameters on the discharge characteristics were analyzed.
5：Data Analysis Methods:
The emission intensities of the spectra were analyzed to understand the effects of pressure and Ar concentration on the DBD plasma discharge.
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