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Viscoelastic relaxation in fluids
Bulletin of the Russian Academy of Sciences: Physics, 2015The shear elasticity of different fluids are studied experimentally at relatively low frequencies of 40 and 74 kHz. The real and imaginary shear moduli of several liquids are measured using the acoustic resonance method. A low-frequency viscoelastic relaxation process is assumed to occur in a fluid with a period of relaxation much longer than the ...
B. B. Badmaev +2 more
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, 2020
Recently, viscoelastic surfactant (VES) fracturing fluids have attracted wide attention because they are highly viscoelastic and environmentally benign. To optimize fracturing fluid formulations for coal reservoir conditions, 135 groups of VES fracturing
Mengmeng Yang +7 more
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Recently, viscoelastic surfactant (VES) fracturing fluids have attracted wide attention because they are highly viscoelastic and environmentally benign. To optimize fracturing fluid formulations for coal reservoir conditions, 135 groups of VES fracturing
Mengmeng Yang +7 more
semanticscholar +1 more source
Rayleigh–Benard convection of viscoelastic fluid
Applied Mathematics and Computation, 2003zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Current Opinion in Colloid & Interface Science, 2019
A combination of viscoelastic surfactants with nanoparticles gives a new class of functional self-assembled materials promising for a large variety of applications.
O. Philippova, V. Molchanov
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A combination of viscoelastic surfactants with nanoparticles gives a new class of functional self-assembled materials promising for a large variety of applications.
O. Philippova, V. Molchanov
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Annular Effect in Viscoelastic Fluids
The Physics of Fluids, 1964In the oscillating motion of an incompressible viscoelastic fluid in a pipe, at high Reynolds number the root-mean-square axial velocity has its maximum value in a boundary layer at the wall of the tube. The elasticity of the fluid can make this annular effect much more pronounced than it is in the case of a Newtonian viscous fluid.
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Polymer Engineering & Science, 1978
Abstract Shear stress and first normal stress difference data are presented for materials which exhibit a constant viscosity and yet at the same time exhibit elasticity levels of the same order as polymer melts. Flow pattern observations in circular die entry flows in conjunction with independent shear and normal stress measurement ...
David V. Boger, Hang Nguyen
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Abstract Shear stress and first normal stress difference data are presented for materials which exhibit a constant viscosity and yet at the same time exhibit elasticity levels of the same order as polymer melts. Flow pattern observations in circular die entry flows in conjunction with independent shear and normal stress measurement ...
David V. Boger, Hang Nguyen
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Biomaterials Science, 2019
Hyaluronan (hyaluronic acid, HA) has been extensively explored as an attractive biomaterial for biomedical and pharmaceutical applications due to its unique physiological properties. In particular, HA is a major component of synovial fluid in normal knee
Zhixiang Cai +4 more
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Hyaluronan (hyaluronic acid, HA) has been extensively explored as an attractive biomaterial for biomedical and pharmaceutical applications due to its unique physiological properties. In particular, HA is a major component of synovial fluid in normal knee
Zhixiang Cai +4 more
semanticscholar +1 more source
Flow Birefringence of Viscoelastic Fluids
Journal of the Physical Society of Japan, 1966The 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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A Multigrid Method for Viscoelastic Fluid Flow
SIAM Journal on Numerical Analysis, 2004Summary: 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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Swelling of viscoelastic matrices by viscoelastic fluids
2018A typical example of viscoelastic matrices is represented by polymeric particles devoted to the controlled release of active agents (drugs) that swell when put in contact with an external solvent, typically a physiological medium. Although, in general, physiological fluids can be considered Newtonian, this is not always the case, let us consider, for ...
G. Chiarappa +6 more
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