Viscous droplet in nonthermal plasma: Instability, fingering process, and droplet fragmentation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F20%3A00115786" target="_blank" >RIV/00216224:14310/20:00115786 - isvavai.cz</a>
Result on the web
<a href="https://journals.aps.org/pre/abstract/10.1103/PhysRevE.101.063201" target="_blank" >https://journals.aps.org/pre/abstract/10.1103/PhysRevE.101.063201</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevE.101.063201" target="_blank" >10.1103/PhysRevE.101.063201</a>

Result language
angličtina
Original language name
Viscous droplet in nonthermal plasma: Instability, fingering process, and droplet fragmentation
Original language description
The interaction of dielectric barrier discharge plasma and silicone-oil liquid droplet in a Hele-Shaw cell was investigated experimentally employing synchronized optical and electrical time-resolved measurements. Temporal development of the destabilization, stretching, and fragmentation of the plasma-liquid interface was studied for the whole event lifespan. The perturbation wavelength and temporal development of fingering speed, plasma-liquid interface length, mean transferred charge, and fractal dimension of the pattern were determined. Recorded changes in the dissipated mean power show a strong correlation to subsequent stretching of the interface, opening new methodological possibilities for future investigations. Our extensive parametric study shows that oil viscosity and applied voltage amplitude both have a significant impact on the interface evolution. Notably, at relatively high voltages the destabilized interface featured properties noticeably diverging from the theoretical prediction of a known model. We propose an explanation based on the change of the liquid viscosity with increased heating at high applied voltage amplitudes.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10305 - Fluids and plasma physics (including surface physics)

Project
<a href="/en/project/LM2018097" target="_blank" >LM2018097: R&D centre for plasma and nanotechnology surface modifications</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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