Results 271 to 280 of about 183,428 (314)

ER Shear Characteristics: Volume Fraction, Shear Rate, Time Response

Journal of Dynamic Systems, Measurement, and Control, 1996
Electro-stress and electron-hydraulic time delay are investigated in shear mode tests on ERF (electro-rheological fluid). These parameters are examined using a concentric, Couette clutch operating over a range of shear rates, volume fraction of solid in the ERF, and temperature.
W. A. Bullough, J. Makin, A. R. Johnson, A. Hosseini-Sianaki, R. Firoozian   +4 more
openaire   +1 more source

Shear-Rate Nonanalyticity in Simple Liquids

Journal of Non-Equilibrium Thermodynamics, 1987
A non-equilibrium thermodynamic theory of shear relaxation in a small subvolume of a simple liquid introduces the volume, temperature, particle number, traceless elastic shearing strain \(\sigma^{\dag}_{ij}\), and the volume fraction \(\zeta\), of locally-dilated spherical regions as internal state variables.
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Effects of shear rate on rouleau formation in simple shear flow

Biorheology, 1988
A kinetic equation for rouleau formation in a simple shear flow is derived, based on several assumptions. These are (a) colliding rouleaux stick to one another with a certain probability to form a single rouleau; (b) simultaneous collisions between more than two rouleaux are negligible; (c) rouleaux are broken by a viscous force exerted by the ...
T, Murata, T W, Secomb
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Distribution functions of a simple fluid under shear: Low shear rates

Physical Review E, 1999
Anisotropic pair distribution functions for a simple, soft sphere fluid at moderate and high density under shear have been calculated by nonequilibrium molecular dynamics, by equilibrium molecular dynamics with a nonequilibrium potential, and by a nonequilibrium distribution function theory [H. H. Gan and B. C. Eu, Phys. Rev.
Y V, Kalyuzhnyi, S T, Cui, P T, Cummings, H D, Cochran   +3 more
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A note on mucus shear rates

Respiration Physiology, 1973
Abstract Some order is brought into calculations of the shear rates found in the mucus layers of the lung due to ciliary activity. In the cilia sublayer shear rates of the order of 2π f sec −1 , where f is frequency of the cilium beat, are theoretically obtained.
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Shear-Rate-Independent Diffusion in Granular Flows

Physical Review Letters, 2015
We computationally study the behavior of the diffusion coefficient D in granular flows of monodisperse and bidisperse particles spanning regions of relatively high and low shear rate in open and closed laterally confined heaps. Measurements of D at various flow rates, streamwise positions, and depths collapse onto a single curve when plotted as a ...
Yi, Fan, Paul B, Umbanhowar, Julio M, Ottino, Richard M, Lueptow   +3 more
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Formulation of shear rate sensitive multiple emulsions

Journal of Controlled Release, 2001
This work mainly concentrates on the formulation of W/O/W multiple emulsions capable of breaking and releasing their inner aqueous phase under shear rates compatible with agroalimentary, pharmaceutical and cosmetic applications. Three kinds of multiple emulsions were studied: one with a high concentration of primary emulsion, not viscosified in the ...
Seiller M., Muguet V., Barratt G., Ozer O., Marty J.P., Grossiord J.L.   +5 more
openaire   +3 more sources

Shearing particle monolayers: Strain-rate frequency superposition

Physical Review E, 2010
We report surface shear rheological measurements on monolayers of silica nanoparticles at the air-water interface. We have used the method of strain-rate frequency superposition (SRFS) to characterize the structural relaxation. We show that the rheological properties of the layers have the same universal linear and nonlinear behavior as three ...
Binks, Bernard P., Zang, Duyang, Langevin, Dominique, Wei, Bingbo   +3 more
openaire   +3 more sources

Low shear rate viscosity of fresh blood

Biorheology, 1980
A capillary viscosmeter is described which allows measurement of the shear rate dependency of fresh blood viscosity at low shear rates. The instrument has been used in a preliminary study to evaluate differences between fresh and EDTA anticoagulated blood. In a shear rate range of 0.5 to 1.3 sec−1 the viscosity of fresh blood is more strongly dependent
A, Downs, M, Litt, R E, Kron
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Average shear rate in three pneumatic bioreactors

Bioprocess and Biosystems Engineering, 2010
A method proposed in recent literature was applied to evaluate the average shear rate (γav) in three pneumatic bioreactors of 5-dm3 working volume: bubble column, split airlift, and concentric-tube airlift. The volumetric oxygen transfer coefficient (k(L) a) is the appropriate characteristic parameter to assess the average shear rate (γav) in this ...
Thomasi, Sérgio S., Cerri, Marcel O., Badino, Alberto C.   +2 more
openaire   +3 more sources