4th International workshop on nonequilibrium thermodynamics and complex fluids

	IWNET 2006	4th International workshop on nonequilibrium thermodynamics and complex fluids 3-7 september 2006, Rhodes, Greece

Home Scope Location Speakers Program Abstracts Author index Organizing Committee Scientific Committee Venue & Accomodation Registration News Contact		ORAL PRESENTATION Session: 7 Applications to complex materials: glasses, micelles, colloids, blends, interfaces (scheduled: Thursday, 10:45 ) On the rheology of a dilute suspension of vesicles C. Misbah, G. Danker LSP, Univ. J. Fourier, Grenoble I andCNRS, BP 87, 38402 Saint Martin d'Heres, France From the hydrodynamical equations of vesicle dynamics under shear flow, we extract a rheological law for a dilute suspension. This is made analytically in the small excess area limit. In contrast to droplets and capsules, the rheological law obtained here is, apart from an objective derivative, nonlinear even to the first leading order. We exploit it by evaluating the effective viscosity η_eff and the normal stress differences N₁ and N₂. We make a link between rheology and microscopic dynamics. For example, η_eff is found to exhibit a cusp singularity at the tumbling threshold, while N_1,2 undergoes a collapse. © IWNET 2006

		© and Kleanthi for IWNET 2006