Investigation of blood rheology under steady and unidirectional large amplitude oscillatory shear

Shear viscosity and nonlinear behavior of whole blood under large amplitude oscillatory shear.

We investigated experimentally the rheological behavior of whole human blood subjected to large amplitude oscillatory shear under strain control to assess its nonlinear viscoelastic response. In these rheological tests, the shear stress response presented higher harmonic contributions, revealing the nonlinear behavior of human blood that is associated with changes in its internal microstructure...

Rheo-PIV of a Shear-Banding Wormlike Micellar Solution under Large Amplitude Oscillatory Shear

We explore the behavior of a wormlike micellar solution under both steady and large amplitude oscillatory shear (LAOS) in a cone–plate geometry through simultaneous bulk rheometry and localized velocimetric measurements. First, particle image velocimetry is used to show that the shear banded profiles observed in steady shear are in qualitative agreement with previous results for flow in the con...

Suspension rheology under oscillatory shear and its geophysical implications

Dynamic Shear Rheology of Thixotropic Suspensions: Comparison of Structure-Based Models with Large Amplitude Oscillatory Shear Experiments

Rheological measurements on a model thixotropic suspension developed by Dullaert and Mewis are performed, including large amplitude oscillatory shear (LAOS) flow, shear flow reversal, and a novel unidirectional LAOS flow, to provide an extended rheological data set for testing constitutive models. A new structure-based model is developed by improving the elastic stress component in the Delaware...

Yielding of colloidal gels under steady and oscillatory shear

Submitted for the MAR15 Meeting of The American Physical Society Yielding of colloidal gels under steady and oscillatory shear GEORGE PETEKIDIS, ESMAEEL MOGHIMI, NICK KOUMAKIS, IESLFORTH, FORTH TEAM — The structural and rheological properties of intermediate volume fraction colloid polymer gels are examined during and after steady and oscillatory shear flow using rheometry, confocal microscopy,...