Results 121 to 130 of about 35,623 (166)

Oscillating Viscoelastic Flow

Volume 7: Fluids and Heat Transfer, Parts A, B, C, and D, 2012
The flow of nonlinear viscoelastic fluids between oscillating parallel plates is investigated. The investigation features time-dependent analysis of a complicated viscoelastic material modeled based on the Johnson-Segalman constitutive relation. Given the rheological parameters of certain material known from experiments, the coefficients of Johnson ...
Nariman Ashrafi, Sepideh Samghani
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Instability of a viscoelastic flow

Journal of Engineering Physics, 1973
The kinematic characteristics of the unstable (fluctuating) flow of a 1% solution of polyacrylamide in plane channels have been studied. The profiles of the time-average velocities, the rms velocity fluctuations, and the fluctuation probabilities were found on a computer.
V. I. Popov, A. Ya. Roitman, E. M. Khabakhpasheva   +2 more
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Flow Birefringence of Viscoelastic Fluids

Journal of the Physical Society of Japan, 1966
The flow birefringence of the Rivlin-Ericksen viscoelastic fluid and of Noll's simple fluid is theoretically investigated. The Maxwell-Lorentz field equations, the mechanical field equations and the constitutive equations are reduced to simplified ones in the weak limit of the electromagnetic plane wave.
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Efficient computation of the spectrum of viscoelastic flows

Journal of Computational Physics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Juliana Vianna Valério, Márcio da Silveira Carvalho, Carlos Tomei   +2 more
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A Multigrid Method for Viscoelastic Fluid Flow

SIAM Journal on Numerical Analysis, 2004
Summary: We study a multigrid finite element method for a viscoelastic fluid flow obeying an Oldroyd-B-type constitutive law. The multigrid method is a time-saving method in which the full nonlinear system is solved on a coarse grid, and subsequent approximations are generated on a succession of refined grids by solving a linearized problem.
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The effect of flow on viscoelastic emulsion microstructure

The European Physical Journal E, 2018
Emulsions made of oil, water and surfactants are widespread soft materials with complex structures depending on composition and temperature. Emulsion phase behavior at rest has been widely investigated but flow-induced effects, which are very relevant in many applications, can still be further explored towards improved emulsion microstructural design ...
Preziosi, Valentina, Perazzo, Antonio, Tomaiuolo, Giovanna, Guido, Stefano   +3 more
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Age- and Flow-dependency of Salivary Viscoelasticity

Journal of Dental Research, 2007
Measuring salivary viscoelasticity (by relaxation times) is of paramount importance, since salivary rheology behavior has been associated with the development of oral disease conditions (such as dental caries) in animal and human model studies. In addition, novel and improved methods to evaluate salivary distribution and lubrication are of clinical ...
E, Zussman, A L, Yarin, R M, Nagler
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A new approach to modelling viscoelastic flow

Journal of Non-Newtonian Fluid Mechanics, 1993
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Yuan, X F, Ball, R C, Edwards, S F
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Effects of flow geometry on blood viscoelasticity

Biorheology: The Official Journal of the International Society of Biorheology, 2006
The viscoelastic properties of blood are dominated by microstructures formed by red cells. The microstructures are of several types such as irregular aggregates, rouleaux, and layers of aligned cells. The dynamic deformability of the red cells, aggregation tendency, cell concentration, size of confining vessel and rate of flow are determining factors ...
George B, Thurston, Nancy M, Henderson
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Instabilities in viscoelastic flows

Rheologica Acta, 1992
Viscoelastic instabilities are of practical importance, and are the subject of growing interest. Reviewed here are the fresh developments as well as earlier work in this area, organized into the following categories: instabilities in Taylor-Couette flows, instabilities in cone-and-plate and plate-and-plate flows, instabilities in parallel shear flows ...
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