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

SYSNO ASEP	0453424
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Non-linear Shape Oscillations of Rising Drops and Bubbles: Experiments and Simulations.
Author(s)	Lalanne, B. (FR) Abi Chebel, N. (FR) Vejražka, Jiří (UCHP-M)_{RID, ORCID, SAI} Tanguy, S. (FR) Masbernat, O. (FR) Risso, F. (FR)
Source Title	Physics of Fluids. - : AIP Publishing - ISSN 1070-6631 Roč. 27, č. 12 (2015), s. 123305
Number of pages	16 s.
Action	Conference of European Colloid and Interface Society /27./
Event date	01.09.2013 - 06.09.2013
VEvent location	Sofia
Country	BG - Bulgaria
Event type	EUR
Language	eng - English
Country	US - United States
Keywords	shape oscillations ; nonlinearitites ; interface dynamics
Subject RIV	CI - Industrial Chemistry, Chemical Engineering
R&D Projects	LD13018 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
Institutional support	UCHP-M - RVO:67985858
UT WOS	000367459300017
EID SCOPUS	84953791674
DOI	10.1063/1.4936980
Annotation	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 along with 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.
Workplace	Institute of Chemical Process Fundamentals
Contact	Eva Jirsová, jirsova@icpf.cas.cz, Tel.: 220 390 227
Year of Publishing	2016

Number of the records: 1