Results 151 to 160 of about 53,426 (175)

Shear thinning in non-Brownian suspensions

Soft Matter, 2018
We study the flow of suspensions of non-Brownian particles dispersed in a Newtonian solvent.
Chatté, Guillaume, Comtet, Jean, Niguès, Antoine, Bocquet, Lydéric, Siria, Alessandro, Ducouret, Guylaine, Lequeux, François, Lenoir, Nicolas, Ovarlez, Guillaume, Colin, Annie   +9 more
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Discontinuous shear thinning in ordered suspensions

Physical Review Letters, 1990
The flow properties of concentrated suspensions having crystalline order at rest are reported. The suspensions contain charge stabilized particles and the softness of particle interaction is altered by varying the suspending phase ionic strength. The suspensions display a yield stress ${\mathrm{\ensuremath{\tau}}}_{\mathit{y}}$, and for stresses larger
, Chen, , Zukoski
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Shear-thinning of polydisperse suspensions

Journal of Physics D: Applied Physics, 2008
The effects of the polydispersivity of the particle phase on the rheology of suspensions are studied with falling-ball rheometry. The model suspensions consist of large, neutrally buoyant spheres in a viscous Newtonian suspending fluid. The experiments determine the average velocity of the settling particle along the centreline or axis of the ...
P T Reardon, S Feng, A L Graham, V Chawla, R S Admuthe, J Abbott   +5 more
openaire   +1 more source

Mesoscale modeling of shear-thinning polymer solutions

The Journal of Chemical Physics, 2014
We simulate the linear and nonlinear rheology of two different viscoelastic polymer solutions, a polyisobutylene solution in pristane and an aqueous solution of hydroxypropylcellulose, using a highly coarse-grained approach known as Responsive Particle Dynamics (RaPiD) model.
I. S. Santos de Oliveira, B. W. Fitzgerald, W. K. den Otter, W. J. Briels   +3 more
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Shear thinning and thickening rheology

Journal of Colloid and Interface Science, 1977
Abstract Particles with radii 21–1010 nm, of methyl methacrylate homopolymer or copolymers with ethyl acrylate, were dispersed in high-boiling hydrocarbons. The stabilizer contained poly(12-hydroxystearic) acid. Viscosities at shear rates of 1–104 sec−1 were measured with cone and plate (Weissenberg rheogoniometer), becoming steady almost ...
Charles E Chaffey, Ian Wagstaff
openaire   +1 more source

Time-Periodic Mixing of Shear-thinning Fluids

Chemical Engineering Research and Design, 2004
Mixing times and energy consumption of inelastic shear-thinning fluids in stirred vessels were experimentally investigated using time-periodic conditions. The impeller rotated initially at a speed sufficient to allow the well-mixed region around the impeller to be formed and then the impeller was stopped and turned on periodically.
G. Ascanio, S. Foucault, P.A. Tanguy
openaire   +1 more source

Cavity filling with shear-thinning liquids

Physical Review Fluids, 2020
Two-dimensional numerical simulations show that shear thinning enhances contact-line motion via reduced viscosities near the dynamic contact line. As a result, shear thinning leads to improved cavity filling in comparison to Newtonian liquids.
Jyun-Ting Wu, Lorraine F. Francis, Marcio S. Carvalho, Satish Kumar   +3 more
openaire   +1 more source

Viscoelasticity and shear thinning of nanoconfined water

Physical Review E, 2014
Understanding flow properties and phase behavior of water confined to nanometer-sized pores and slits is central to a wide range of problems in science, such as percolation in geology, lubrication of future nano-machines, self-assembly and interactions of biomolecules, and transport through porous media in filtration processes.
Karan, Kapoor, , Amandeep, Shivprasad, Patil   +2 more
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Structuring Sedimentation in a Shear-Thinning Fluid

Physical Review Letters, 2005
We study the sedimentation of suspensions of monodisperse non-Brownian particles in a shear-thinning polymeric fluid. We observe the formation of particle-rich structures and show that they are associated with a well-defined flow pattern. The results suggest that the observed structuring is a consequence of particle aggregation that amplifies ...
Mora, S., Talini, L., Allain, C.
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Shear-Thinning and Dilatant Rheologies

1994
The rheological properties of crowded suspensions and pastes of powders dispersed in liquids is of fundamental importance to the forming properties of any ceramic article formed by the wet process. This includes such diverse products as brick and tile, whitewares, many refractories, electronic ceramics, and high performance ceramics.
James E. Funk, Dennis R. Dinger
openaire   +1 more source