Single droplet breaking after interaction with vortex ring

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F25%3A00642686" target="_blank" >RIV/67985858:_____/25:00642686 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.conftool.net/icmf2025/sessions.php" target="_blank" >https://www.conftool.net/icmf2025/sessions.php</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Single droplet breaking after interaction with vortex ring

Popis výsledku v původním jazyce

The study of the droplet breakup is based on the experimental visualisation of a single droplet interacting with a vortex ring. The experimental design allows control of both the vortex ring inertia and the droplet size. A kerosene droplet breaking in distilled water is studied. A high-speed camera is used to record the entire interaction process and the breakup frequency is evaluated. The breakup frequency is compared with data obtained for bubbles interacting with the vortex ring under the same conditions and with theoretical models available in the literature. Appropriate scales are defined to compare bubble and droplet experimental data. The Weber number relevant to bubble breakup is based on the density of the continuous phase, whereas the Weber number relevant to droplet breakup is based on the density of the dispersed phase. The time scale relevant to droplet breakup must reflect the density ratio of both phases. Although the comparison of all experimental data shows reasonable agreement with results obtained in turbulent flows, the density ratio is not sufficient to unify the description of bubble and droplet breakup.n

Název v anglickém jazyce

Single droplet breaking after interaction with vortex ring

Popis výsledku anglicky

The study of the droplet breakup is based on the experimental visualisation of a single droplet interacting with a vortex ring. The experimental design allows control of both the vortex ring inertia and the droplet size. A kerosene droplet breaking in distilled water is studied. A high-speed camera is used to record the entire interaction process and the breakup frequency is evaluated. The breakup frequency is compared with data obtained for bubbles interacting with the vortex ring under the same conditions and with theoretical models available in the literature. Appropriate scales are defined to compare bubble and droplet experimental data. The Weber number relevant to bubble breakup is based on the density of the continuous phase, whereas the Weber number relevant to droplet breakup is based on the density of the dispersed phase. The time scale relevant to droplet breakup must reflect the density ratio of both phases. Although the comparison of all experimental data shows reasonable agreement with results obtained in turbulent flows, the density ratio is not sufficient to unify the description of bubble and droplet breakup.n

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/GA22-29605S" target="_blank" >GA22-29605S: Interakce bubliny nebo kapky s toroidním vírem</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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