Stick-slip instability for viscous fingering in a gel

Details Stick-slip instability for viscous fingering in a gel Stick-slip instability for viscous fingering in a gel

2002-01-09

arxiv.org/abs/cond-mat/0201136v1

Physics

Condensed Matter

Soft Condensed Matter

7 pages, 4 figures. Submitted to Europhysics Letters

Scientific paper

10.1209/epl/i2002-00427-7

The growth dynamics of an air finger injected in a visco-elastic gel (a PVA/borax aqueous solution) is studied in a linear Hele-Shaw cell. Besides the standard Saffmann-Taylor instability, we observe - with increasing finger velocities - the existence of two new regimes: (a) a stick-slip regime for which the finger tip velocity oscillates between 2 different values, producing local pinching of the finger at regular intervals, (b) a ``tadpole'' regime where a fracture-type propagation is observed. A scaling argument is proposed to interpret the dependence of the stick-slip frequency with the measured rheological properties of the gel.

Affiliated with

Also associated with

No associations

Rating

Stick-slip instability for viscous fingering in a gel 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 Stick-slip instability for viscous fingering in a gel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stick-slip instability for viscous fingering in a gel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-123971