Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2010-01-06
Physics
Condensed Matter
Soft Condensed Matter
submitted to Rheologica Acta
Scientific paper
Simulations of monodisperse and polydisperse ($\mu_2(A)=0.13\pm0.002$) 2D foam samples undergoing simple shear are performed using the 2D Viscous Froth (VF) Model. These simulations clearly demonstrate shear localisation. The dependence of localisation length on the product $\lambda V$ (shearing velocity $V$ times external wall friction coefficient $\lambda$) is examined and is shown to agree qualitatively with other published experimental data. A wide range of localisation lengths is found at low $\lambda V$, an effect which is attributed to the existence of distinct yield and limit stresses. The general Continuum Model is extended to incorporate such an effect and its parameters are subsequently related to those of the VF Model. A Herschel-Bulkley exponent of $a=0.3$ is shown to accurately describe the observed behaviour. The localisation length is found to be independent of $\lambda V$ for monodisperse foam samples.
Barry Joseph D.
Hutzler Stefan
Weaire Denis
No associations
LandOfFree
Shear localisation with 2D Viscous Froth and its relation to the Continuum Model 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 Shear localisation with 2D Viscous Froth and its relation to the Continuum Model, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shear localisation with 2D Viscous Froth and its relation to the Continuum Model will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-164170