http://fuckyeahfluiddynamics.tumblr.com/post/58334292312/the-saffman-taylor-instability-characterized-by

Press/Media: Blogs and social media

Release date: 15/8/2013

Description

The Saffman-Taylor instability, characterized by the branchlike fingers formed when a less viscous fluid is injected into a more viscous one, is typically demonstrated between two rigid walls, as in part (a) of the figure above. But what happens if one of the rigid walls forming the Hele-Shaw cellis replaced with an elastic wall? This is the case for (b) and © in the figure. The flexibility of the wall causes the expansion of the air-fluid interface to slow down relative to the rigid wall case and causes the interface to move toward a narrowing fluid-filled gap (as opposed to a constant thickness one). Both of these effects reduce the viscous instability mechanism that drives the fingering instability. With a high enough mass flow rate as in ©, there is still some instability in the interface, but it is dramatically reduced. (Photo credit: D. Pihler-Puzovic et al.)

Media coverage

Titlehttp://fuckyeahfluiddynamics.tumblr.com/post/58334292312/the-saffman-taylor-instability-characterized-by
Date15/08/13
PersonsAnne Juel