Surfactant effect on bubble deformation and breakup after interaction with vortex structure

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F25%3A00603954" target="_blank" >RIV/67985858:_____/25:00603954 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/44555601:13440/25:43899000 RIV/60461373:22340/25:43931174

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0009250924014441?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0009250924014441?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ces.2024.121144" target="_blank" >10.1016/j.ces.2024.121144</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Surfactant effect on bubble deformation and breakup after interaction with vortex structure

Popis výsledku v původním jazyce

Bubble – vortex ring interaction is studied experimentally in order to investigate the effect of surfactants on bubble deformation and possible breakup. The experiments are based on high-speed visualization of a single bubble interacting with a single vortex ring. The effect of surfactant is investigated using α-terpineol as a model surfactant, at two concentrations 1×10- 3 and 3×10- 3 mol/l. The presence of surfactant dampens the bubble deformation and increases the energy required to break the bubble after interaction with the vortex ring. Therefore, the interaction process is less likely to result in bubble breakup. A novel parameter characterizing the fast-dynamic changes of the bubble interface is proposed based on the surface concentration of surfactant at the actual bubble age [1-(Γ/Γmax)]. This parameter is applied to correct the Weber number, which scales the breakup process in both clean and contaminated interfaces. The parameter successfully correlates both the breakup frequency and the mean number of daughter bubbles under different conditions, demonstrating its potential as a universal metric.

Název v anglickém jazyce

Surfactant effect on bubble deformation and breakup after interaction with vortex structure

Popis výsledku anglicky

Bubble – vortex ring interaction is studied experimentally in order to investigate the effect of surfactants on bubble deformation and possible breakup. The experiments are based on high-speed visualization of a single bubble interacting with a single vortex ring. The effect of surfactant is investigated using α-terpineol as a model surfactant, at two concentrations 1×10- 3 and 3×10- 3 mol/l. The presence of surfactant dampens the bubble deformation and increases the energy required to break the bubble after interaction with the vortex ring. Therefore, the interaction process is less likely to result in bubble breakup. A novel parameter characterizing the fast-dynamic changes of the bubble interface is proposed based on the surface concentration of surfactant at the actual bubble age [1-(Γ/Γmax)]. This parameter is applied to correct the Weber number, which scales the breakup process in both clean and contaminated interfaces. The parameter successfully correlates both the breakup frequency and the mean number of daughter bubbles under different conditions, demonstrating its potential as a universal metric.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

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

Název periodika

Chemical Engineering Science

ISSN

0009-2509

e-ISSN

1873-4405

Svazek periodika

305

Číslo periodika v rámci svazku

FEB 15 2025

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

121144

Kód UT WoS článku

001400204900001

EID výsledku v databázi Scopus

2-s2.0-85213862028