Dielectric barrier discharge-based plasma actuator operation in artificial atmospheres for validation of modeling and simulation
| Autor: | G. I. Font, C. L. Enloe, R. S. Mangina |
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| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | Physics of Plasmas. 22:114502 |
| ISSN: | 1089-7674 1070-664X |
| Popis: | We present an experimental case study of time-resolved force production by an aerodynamic plasma actuator immersed in various mixtures of electropositive (N2) and electronegative gases (O2 and SF6) at atmospheric pressure using a fixed AC high-voltage input of 16 kV peak amplitude at 200 Hz frequency. We have observed distinct changes in the discharge structures during both negative- and positive-going voltage half-cycles, with corresponding variations in the actuator's force production: a ratio of 4:1 in the impulse produced by the negative-going half-cycle of the discharge among the various gas mixtures we explored, 2:1 in the impulse produced by the positive-going half-cycle, and cases in which the negative-going half-cycle dominates force production (by a ratio of 1.5:1), where the half-cycles produce identical force levels, and where the positive-going half cycle dominates (by a ratio of 1:5). We also present time-resolved experimental evidence for the first time that shows electrons do play a signif... |
| Databáze: | OpenAIRE |
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