Results 281 to 290 of about 2,936,694 (340)
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Scale-Dependent Viscosity in Polymer Fluids
The Journal of Physical Chemistry B, 2016In this communication, we use simple physical arguments to construct a "phase diagram" of various frequency and wave vector-dependent regimes of effective viscosity for polymer fluids, including nonentangled and entangled melts, semidilute solutions without and with hydrodynamic interactions, as well as the more exotic case of a melt of unconcatenated ...
Grosberg, Alexander Y. +3 more
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Lubrication and fluid viscosity
Physics Bulletin, 1982Despite a sudden onset of arctic weather, over 30 delegates travelled to the Cavendish Laboratory, Cambridge, on 9 December 1981 for a one–day meeting of The Institute of Physics Tribology Group on 'Lubrication and the basic concepts of fluid viscosity'.
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Viscosity of confined inhomogeneous nonequilibrium fluids
The Journal of Chemical Physics, 2004We use the nonlocal linear hydrodynamic constitutive model, proposed by Evans and Morriss [Statistical Mechanics of Nonequilibrium Liquids (Academic, London, 1990)], for computing an effective spatially dependent shear viscosity of inhomogeneous nonequilibrium fluids.
Zhang, Junfang +2 more
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Viscosity of Fluids in Subduction Zones
Science, 2004The viscosities of aqueous fluids with 10 to 80 weight percent dissolved silicates have been measured at 600° to 950°C and 1.0 to 2.0 gigapascals by in situ observation of falling spheres in the diamond anvil cell. The viscosities at 800°C range from 10 –4 to 10 0.5 pascal seconds.
Andreas, Audétat, Hans, Keppler
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Handling high viscosity fluids
World Pumps, 2004Where high viscosity liquids are required to be pumped at relatively low flow rates and pressures, the challenge is always going to be identifying a suitable pump type. Lubricating oils, bitumen, asphalt, molasses, grease, emulsions, resins and other similarly viscous products demand positive displacement pumps that have low shear characteristics in ...
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Interfacial shear viscosity at fluid‐fluid interfaces
AIChE Journal, 1971AbstractFluid‐fluid interfaces containing surface‐active agents or macromolecules exhibit interfacial shear viscosity phenomena. The purpose of this paper is to investigate theoretically the dynamics of liquid‐liquid and liquid‐gas interfaces containing surfactants, and to establish the validity of the proposed model from shear flow data at ...
D. T. Wasan, Lalit Gupta, M. K. Vora
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Non-Newtonian Viscosity of Complex-Plasma Fluids
Physical Review Letters, 2007Investigations of shear flows in three-dimensional complex-plasma fluids produced in a dc discharge were carried out. The shear was induced either by an inhomogeneous gas flow or by a laser beam. The viscosity of complex plasmas was measured over a broad range of shear rates, up to the hydrodynamic limit when the discreteness becomes important ...
Ivlev, A. +5 more
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Apparent Viscosity of a Charged Fluid
The Physics of Fluids, 1961Charges in a liquid or gas, under the influence of a self-created or applied field, increase the viscous losses. The general equations for a macroscopic electrohydrodynamic treatment of this phenomenon are given. Steady-state channel flow and a simple dynamic situation are theoretically investigated and compared with the magnetohydrodynamic cases. Some
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