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College of Sciences

 

Bubble instabilities in constricted geometries

Time: 
Wed, 11/28/2012 - 3:00pm
Location: 
Howey N110

Series: Nonlinear science and Mathematical Physics

Affiliation: 
University of Manchester

PLEASE NOTE: This is a WEBINAR

The displacement of a liquid by an air bubble is a generic two-phase flow that underpins applications as diverse as microfluidics, thin-film coating, enhanced oil recovery, and biomechanics of the lungs. I will present two intriguing examples of such flows where, firstly, oscillations in the shape of propagating bubbles are induced by a simple change in tube geometry, and secondly, flexible vessel boundaries that enable streamwise variations of the channel depth suppress viscous fingering instability.