Fingering instabilities of a reactive micellar interface

Details Fingering instabilities of a reactive micellar interface Fingering instabilities of a reactive micellar interface

2007-03-28

arxiv.org/abs/nlin/0703060v2

Nonlinear Sciences

Pattern Formation and Solitons

7 pages, 9 figures, submitted to Phys. Rev. E, revised version

Scientific paper

10.1103/PhysRevE.76.016202

We present an experimental study of the fingering patterns in a Hele-Shaw cell, occurring when a gel-like material forms at the interface between aqueous solutions of a cationic surfactant cetyltrimethylammonium bromide) and an organic salt (salicylic acid), two solutions known to form a highly elastic wormlike micellar fluid when mixed homogeneously. A variety of fingering instabilities are observed, depending on the velocity of the front (the injection rate), and on which fluid is injected into which. We have found a regime of non-confined stationary or wavy fingers for which width selection seems to occur without the presence of bounding walls, unlike the Saffman-Taylor experiment. Qualitatively, some of our observations share common mechanisms with instabilities of cooling lava flows or growing biofilms.

Affiliated with

Also associated with

No associations

Rating

Fingering instabilities of a reactive micellar interface does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Fingering instabilities of a reactive micellar interface, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fingering instabilities of a reactive micellar interface will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-711295