Date of this Version
Physical Review Letters
We investigate pattern formation in the immiscible displacement of foam from a confining geometry. The dominant length scales with the driving pressure gradient as for a Newtonian fluid, but depends surprisingly on the ratio of plate separation to bubble diameter. The pattern morphology exhibits a transition from a jagged, presumably elastic, character to a smooth, viscous character as the shear strain rate rises far above the natural internal relaxation time scale of the foam. These features may result from the two-dimensional nature of the flows and the unusual rheology of foams.
© 1994 American Physical Society. You van view the original article at: https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.72.3347
Park, S. S., & Durian, D. J. (1994). Viscous and Elastic Fingering Instabilities in Foam. Physical Review Letters, 72 (21), 3347-3350. http://dx.doi.org/10.1103/PhysRevLett.72.3347
Date Posted:10 October 2017
This document has been peer reviewed.