Nous présentons plusieurs expériences d'hydrodynamique interfaciale illustrant des procédés de création, stabilité et rupture d'interfaces fluides, liquide/liquide ou liquide/gaz. Dans un premier temps, nous étudions le processus de fragmentation d'objets déformables, gouttes et bulles, par un obstacle rectangulaire ou une boucle asymétrique placés dans un canal microfluidique. La deuxième partie de ce travail se consacre à des expériences menées avec des bulles et films liquides minces formés à l'aide d'eau savonneuse ou de liquides très visqueux. Après avoir revisité quelques surfaces minimales adoptées par un film de savon à l'équilibre, nous étudions divers mécanismes de formation de bulles et de bulles interfaciales. Dans ces deux parties, nos études sont menées en faisant varier de façon systématique les paramètres hydrodynamiques, physicochimiques et géométriques contrôlant chaque expérience. Nous interprétons les résultats obtenus en microfluidique à l'aide d'arguments simples basés notamment sur l'analogie électro-hydraulique aux bas nombres de Reynolds, tandis que l'analyse dimensionnelle et des lois d'échelle permettent de décrire la plupart des comportements expérimentaux des bulles et films liquides minces. / We report hydrodynamic experiments illustrating the creation, stability and rupture of either liquid/liquid or liquid/gas interfaces. First, we investigate the fragmentation of deformable objects, such as drops and bubbles, against a rectangular obstacle or at the entry node of an asymmetric loop placed in a microfluidic channel. In the second part of this work, we report experiments conducted with bubbles and thin-liquid films either made with soapy water or highly viscous fluids. After having described a few minimal surfaces sought by a soap film at equilibrium, we study a variety of mechanisms that yield the formation of bubbles and interfacial bubbles. In both parts, our investigations are conducted by systematically varying the parameters (hydrodynamic, physicochemical and geometric) controlling each experiment. We interpret microfluidic results with simple physical arguments based on the electro-hydraulic analogy at low Reynolds numbers. Experimental findings on bubbles are rationalized mostly using dimensional analysis and scaling laws.

Thesis (Ph. D.)--University of Texas at Austin, 2000. / Vita. Includes bibliographical references. Available also in a digital version from Dissertation Abstracts.

Thesis (Ph. D.)--Ohio State University, 2006. / Title from first page of PDF file. Includes bibliographical references (p. 167-174).

Thesis (Ph. D.)--University of Oregon, 2002. / Typescript. Includes vita and abstract. Includes bibliographical references (leaves 187-198). Also available for download via the World Wide Web; free to University of Oregon users.

Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 17, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dissertation advisor: Dr. Yuwen Zhang. Vita. Includes bibliographical references.

Thesis (MAppSc)--University of South Australia, 1996

Thesis (Ph. D.)--University of Washington, 2007. / Vita. Includes bibliographical references (p. 111-121).

Thesis (Ph. D.)--University of Washington, 1994. / Vita. Includes bibliographical references (leaves [163]-174).

Thesis (M.Eng.(Chemical engineering))--University of Pretoria, 2009. / Includes bibliographical references.

Thesis (M.S.)--University of Alabama at Birmingham, 2008. / Description based on contents viewed July 8, 2009; title from PDF t.p. Includes bibliographical references (p. 47).