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Pulsed discharge-induced high-speed flow near a dielectric ledge

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Abstract

We report on the effect of nanosecond surface sliding discharge glow redistribution near a dielectric ledge and high-speed post-discharge flow dynamics. The discharge energy localization is shown to be supplementary to plasma glow inhomogeneity along the surface. The process is studied in a discharge chamber with two \(100 \,\mathrm{mm} \times 30 \,\mathrm{mm}\) surface sliding discharges (plasma sheets) placed on the top and bottom walls and a dielectric ledge, \(48\,\mathrm{mm} \times 6 \,\mathrm{mm} \times 2 \,\mathrm{mm}\) in size, mounted on the bottom plasma sheet. The dynamics of the discharge-induced flow is captured using high-speed shadowgraphy during the first 40–50 \(\mu \mathrm{s}\) after the discharge ignition. Computational fluid dynamics (CFD) simulations of the induced flow are also conducted to gain more insight into the energy release area configuration. Based on the numerical and experimental shadow images matching, the pulsed discharge energy redistribution is quantitatively analyzed.

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Acknowledgements

The work was conducted under the support of the Russian Foundation for Basic Research (Grant No. 19-08-00661). The authors also acknowledge the support from the Interdisciplinary Scientific and Educational School of Moscow University “Photonic and Quantum Technologies. Digital Medicine.” Daria Tatarenkova thanks the “BASIS” foundation for PHD Physics students of Lomonosov Moscow State University for a scholarship.

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Correspondence to E. Yu. Koroteeva.

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Tatarenkova, D.I., Koroteeva, E.Y., Kuli-zade, T.A. et al. Pulsed discharge-induced high-speed flow near a dielectric ledge. Exp Fluids 62, 151 (2021). https://doi.org/10.1007/s00348-021-03253-0

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  • DOI: https://doi.org/10.1007/s00348-021-03253-0

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