Non-linear Shape Oscillations of Rising Drops and Bubbles: Experiments and Simulations.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F15%3A00453424" target="_blank" >RIV/67985858:_____/15:00453424 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/1.4936980" target="_blank" >http://dx.doi.org/10.1063/1.4936980</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.4936980" target="_blank" >10.1063/1.4936980</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Non-linear Shape Oscillations of Rising Drops and Bubbles: Experiments and Simulations.

Popis výsledku v původním jazyce

This paper focuses on shape-oscillations of a gas bubble or a liquid drop rising in another liquid. The bubble/drop is initially attached to a capillary and is released by a sudden motion of that capillary, resulting in the rise of the bubble/drop alongwith the oscillations of its shape. Such experimental conditions make difficult the interpretation of the oscillation dynamics with regard to the standard linear theory of oscillation because amplitude of deformation is large enough to induce nonlinearities, the rising motion may be coupled with the oscillation dynamics, and clean conditions without residual surfactants may not be achieved. These differences with the theory are addressed by comparing experimental observation with numerical simulation. Simulations are carried out using Level-Set and Ghost-Fluid methods with clean interfaces. The effect of the rising motion is investigated by performing simulations under different gravity conditions.

Název v anglickém jazyce

Non-linear Shape Oscillations of Rising Drops and Bubbles: Experiments and Simulations.

Popis výsledku anglicky

This paper focuses on shape-oscillations of a gas bubble or a liquid drop rising in another liquid. The bubble/drop is initially attached to a capillary and is released by a sudden motion of that capillary, resulting in the rise of the bubble/drop alongwith the oscillations of its shape. Such experimental conditions make difficult the interpretation of the oscillation dynamics with regard to the standard linear theory of oscillation because amplitude of deformation is large enough to induce nonlinearities, the rising motion may be coupled with the oscillation dynamics, and clean conditions without residual surfactants may not be achieved. These differences with the theory are addressed by comparing experimental observation with numerical simulation. Simulations are carried out using Level-Set and Ghost-Fluid methods with clean interfaces. The effect of the rising motion is investigated by performing simulations under different gravity conditions.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/LD13018" target="_blank" >LD13018: Vlastnosti fázového rozhraní - jejich měření a jejich vliv na chování makroskopických toků</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název periodika

Physics of Fluids

ISSN

1070-6631

e-ISSN

—

Svazek periodika

27

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

16

Strana od-do

—

Kód UT WoS článku

000367459300017

EID výsledku v databázi Scopus

2-s2.0-84953791674