Results 251 to 260 of about 87,763 (276)

On Thin Shear Layers Numerical Simulation

Journal of Computational Physics, 2001
The paper describes a numerical solution of nonstationary Navier-Stokes equations with two space variables and periodic boundary conditions using vorticity-stream function formulation and finite difference methods. There are examples indicating that sometimes coarse grids yield rather unsatisfactory flow models, especially at large Reynolds number Re ...
Tolstykh, A. I., Chigirev, E. N.
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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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Diblock-copolymer thin films under shear

The Journal of Chemical Physics, 2016
The behavior of lamellae forming diblock-copolymer melts confined by two non-selective substrates under shear is studied by means of molecular dynamics simulations. Since the substrate/copolymer preferential interaction is absent, the vertically oriented lamellae (L⊥) are formed.
Lenin S. Shagolsem, Torsten Kreer, Andre Galuschko, Jens-Uwe Sommer   +3 more
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Shear thickening-shear thinning and shear thinning-shear thickening transitions in polymeric systems

Caderno Pedagógico
This review explores the complex rheological behaviors of hydrogels, specifically focusing on shear thinning-shear thickening (PD) and the less common shear thickening-shear thinning (DP) transitions. While shear thinning (viscosity decrease with increasing shear rate) is widely utilized in applications like 3D printing and injectables, and shear ...
José Edilson Neves, Taynah Pereira Galdino, Antonio Gilson Barbosa de Lima, Marcus Vinicius Lia Fook, Rômulo Feitosa Navarro   +4 more
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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
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Shear thinning and shear thickening characteristics in electrorheological fluids

Smart Materials and Structures, 2013
The electrorheology (ER) of suspensions based on polystyrene/polyaniline (PS/PANI) core/shell structured microspheres and those based on disk-like zeolite particles at different electric fields and particle volume fractions have been studied, respectively.
Jile Jiang, YingDan Liu, Lei Shan, Xiangjun Zhang, Yonggang Meng, Hyoung Jin Choi, Yu Tian   +6 more
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Nonlinear fluid behavior: from shear thinning to shear thickening

Physica A: Statistical Mechanics and its Applications, 1994
Abstract A phenomenological model is introduced which describes both shear thinning and shear thickening behavior. Consequences of this model are presented for plane Couette (simple shear) flow. The non-Newtonian viscosity and normal pressure differences are discussed for a stationary situation.
Ortwin Hess, Siegfried Hess
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Shear thinning vs shear thickening in associating fluids

The Journal of Chemical Physics, 1998
When one-bond Frenkel dumbbells are allowed to dimerize, as analyzed using the Wertheim theory of association, the resulting fluid exhibits shear thinning or shear thickening behaviors. In contrast, when Gaussian chains undergo shear-assisted association, only shear thickening is possible.
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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
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