2013/10/10 by Geoffrey Dawson, Dawson, Geoffrey, Anne Juel +1
Chemical Engineering · Materials Science · Medicine · Physics and Astronomy · #Blood properties and coagulation #FOS: Physical sciences #Fluid Dynamics (physics.flu-dyn) #Pickering emulsions and particle stabilization #Rheology and Fluid Dynamics Studies #physics.flu-dyn
paper · pdf · doi:10.48550/arxiv.1310.2876
2 pages, 2 linked videos
arxiv created 2013/10/10 · openalex publication_date 2013/10/10 · arxiv updated 2013/10/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In this fluid dynamics video, we compare the deformation of two flexible particles as they propagate through a sudden constriction of a liquid filled channel under constant-flux flow: a gas bubble, and a capsule formed by encapsulating a liquid droplet in a cross-linked polymeric membrane. Both bubble and capsule adopt highly contorted configurations as they squeeze through the constriction, exhibit broadly similar features over a wide range of flow rates, and rupture for sufficiently high flow rates. However, at flow rates prior to rupture, certain features of the deformation allow bubble and capsule to be distinguished: bubbles exhibit a tip-streaming singularity associated with critical thinning of the rear of the bubble, while the capsule membrane wrinkles under large compressive stresses induced by the constriction.