Non-linear oscillatory rheological properties of a generic continuum foam model: comparison with experiments and shear-banding predictions

Details Non-linear oscillatory rheological properties of a generic continuum foam model: comparison with experiments and shear-banding predictions Non-linear oscillatory rheological properties of a generic continuum foam model: comparison with experiments and shear-banding predictions

2010-11-02

arxiv.org/abs/1011.0521v2

Physics

Condensed Matter

Soft Condensed Matter

18 pages - 17 figures

Scientific paper

The occurence of shear bands in a complex fluid is generally understood as resulting from a structural evolution of the material under shear, which leads (from a theoretical perspective) to a non-monotonic stationnary flow curve related to the coexistence of different states of the material under shear. In this paper we present a framework for shear-banding in a particular class of complex fluids, namely foams and concentrated emulsions, which differ from other fluids in two important ways. First, the appearance of shear bands is shown to be possible without any intrinsic physical evolution of the material (e.g. via a parameter coupled to the flow such as concentration or entanglements). Secondly, the appearance of shear bands depends on the initial conditions, i.e., the preparation of the material. In other words, it is history dependent. This behaviour relies on the tensorial character of the underlying model (2D or 3D) and is triggered by an initially inhomogeneous strain distribution in the material.

Affiliated with

Also associated with

No associations

Rating

Non-linear oscillatory rheological properties of a generic continuum foam model: comparison with experiments and shear-banding predictions 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 Non-linear oscillatory rheological properties of a generic continuum foam model: comparison with experiments and shear-banding predictions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-linear oscillatory rheological properties of a generic continuum foam model: comparison with experiments and shear-banding predictions will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-594957