Nonequilibrium molecular dynamics (NEMD) simulations were performed and the transient time correlation function (TTCF) method applied to calculate the shear viscosity of n-decane. Using the TTCF method we were able to calculate the viscosity at shear rate orders of magnitude lower than is possible by direct NEMD simulation alone. For the first time for a molecular fluid, we were able to simulat...

the main purpose of the present study is to investigate the effect of air drying, freeze drying and vacuum drying methods on viscosity and gelation of lipidium perfoliatum seed gum. results showed that the viscosity values of samples varied from 0.31 to 1.26 pa.s at (shear rate = 12.23 s-1) and control sample gum exhibited the highest viscosity. apparent viscosity was decreased by all of drying...

A single point viscosity measurement has been proven meaningless in determining the rheological and application properties of a paint. Paints having the same “one point“ viscosity can hove different settling, sag, and leveling properties. These rheological differences are graphically depicted by means of viscosity profiles obtained through the use of low and high shear rate viscometers. A metho...

We present a non-equilibrium molecular dynamics simulation of 125 methane molecules using a variant of the isokinetic “sllod” algorithm. The shear viscosity, pressure and internal energy of methane in a dense, supercritical fluid state (temperature 285.7 K and mass density 0.288 g/cm3) are calculated and the viscosity compared with experiment, with excellent agreement: the predicted shear visco...

In the Guidelines for measurement of blood viscosity and erythrocyte deformability by ICSH in 1986, it points out that the viscometer for hemorheology should ideally be able to operate over a wide range of shear conditions, and for a constant shear-rate viscometer a high-shear measurement at 200/second and a low-shear measurement at 1/second (or shear-rates approximating to these values if they...

The speed of torsional stress waves transmitted in solid waveguides submerged in a liquid depends, among other things, on the liquid's density and viscosity and the waveguides' cross-sectional geometry. By measuring the speed of torsional stress waves in two waveguides of different cross-sectional geometries, one can obtain both the liquid's density and viscosity. An online, real-time sensor fo...

I review the progress made in extracting transport properties of the quark-gluon plasma from lattice QCD simulations. The information on shear and bulk viscosity, the “low-energy constants” of hydrodynamics, is encoded in the retarded correlators of Tμν, the energy-momentum tensor. Euclidean correlators, computable on the lattice, are related to the retarded correlators by an integral transform...

We have investigated the structural change of an immiscible blend consisting of two polymers with equal viscosity subjected to a step electric field under shear flow. During the process, three-dimensional images were successfully acquired with a confocal scanning laser microscope, and at the same time, the transient shear stress was also measured. From the images, the interface tensor was calcu...

The Cox-Merz rule and Laun's rule are two empirical relations that allow the estimation of steady shear viscosity and first normal stress difference respectively using small amplitude oscillatory shear measurements. The validity of the Cox-Merz rule and Laun's rule imply an agreement between the linear viscoelastic response measured in small amplitude oscillatory shear and the nonlinear respons...

The Cox-Merz rule and Laun's rule are two empirical relations that allow the estimation of steady shear viscosity and first normal stress difference respectively using small amplitude oscillatory shear measurements. The validity of the Cox-Merz rule and Laun's rule imply an agreement between the linear viscoelastic response measured in small amplitude oscillatory shear and the nonlinear respons...