Dynamics of macro- and micro-bubbles induced by nanosecond discharge in liquid water

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00119634" target="_blank" >RIV/00216224:14310/22:00119634 - isvavai.cz</a>

Alternative codes found

RIV/61389021:_____/22:00555276

Result on the web

<a href="https://iopscience.iop.org/article/10.1088/1361-6595/ac3bd6" target="_blank" >https://iopscience.iop.org/article/10.1088/1361-6595/ac3bd6</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1361-6595/ac3bd6" target="_blank" >10.1088/1361-6595/ac3bd6</a>

Result language

angličtina

Original language name

Dynamics of macro- and micro-bubbles induced by nanosecond discharge in liquid water

Original language description

Gaseous micro-bubbles dispersed in liquid water represent perturbations of the homogeneity of the liquid and influence the onset of electrical discharge in the bulk liquid. In this study, we systematically examined shadowgraph images to analyse the gaseous structures occurring in response to nanosecond micro-discharges produced in deionised water. The images revealed the dynamics of resolved bubbles and unresolved sub-micrometric structures starting from nanoseconds after the onset of discharge. We provide absolute counts and the radii distributions of micro-bubbles that occur near the anode needle and show how this depends on the amplitude and repetition frequency of the applied high-voltage pulses, when the latter varies between 0.1 and 100 Hz. A systematic statistical analysis showed that the probability of producing bubble-assisted nanosecond discharge in the liquid phase rapidly increases with the discharge repetition rate (&gt;0.5 Hz). Although the cavitation bubble formed around the anode disintegrates and disappears from the anode region within the first millisecond, the sub-micrometric structures remain for tens of milliseconds, and fragmented micro-bubbles survive even for hundreds of milliseconds. Our findings impose strict limitations on the experimental setups used to investigate the mechanisms of direct discharge in liquid water.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Plasma Sources Science and Technology

ISSN

0963-0252

e-ISSN

—

Volume of the periodical

31

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

20

Pages from-to

015005

UT code for WoS article

000744455700001

EID of the result in the Scopus database

2-s2.0-85123979240