Orientation dependent elastic stress concentration at tips of slender objects translating in viscoelastic fluids [PDF]
, 2019 Elastic stress concentration at tips of long slender objects moving in viscoelastic fluids has been observed in numerical simulations, but despite the prevalence of flagellated motion in complex fluids in many biological functions, the physics of stress ...
Guy, Robert D. +2 more
core +3 more sources
Viscoelastic Particle Focusing and Separation in a Spiral Channel
Micromachines, 2022 As one type of non-Newtonian fluid, viscoelastic fluids exhibit unique properties that contribute to particle lateral migration in confined microfluidic channels, leading to opportunities for particle manipulation and separation.
Haidong Feng +5 more
doaj +1 more source
Hybrid Lattice Boltzmann/Finite Difference simulations of viscoelastic multicomponent flows in confined geometries [PDF]
, 2015 We propose numerical simulations of viscoelastic fluids based on a hybrid algorithm combining Lattice-Boltzmann models (LBM) and Finite Differences (FD) schemes, the former used to model the macroscopic hydrodynamic equations, and the latter used to ...
Gupta, A. +2 more
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Microswimming in viscoelastic fluids
Journal of Non-Newtonian Fluid Mechanics, 2021 The locomotion of microorganisms and spermatozoa in complex viscoelastic fluids is of critical importance in many biological processes such as fertilization, infection, and biofilm formation. Depending on their propulsion mechanisms, microswimmers display various responses to a complex fluid environment: increasing or decreasing their swimming speed ...
Li, Gaojin +2 more
openaire +2 more sources
A novel CO2 sensitive and recyclable viscoelastic fluid system for fracturing
Frontiers in Earth Science, 2022 Hydraulic fracturing is one of the most commonly used processes of stimulating oil and gas wells to improve the production in low permeability reservoirs or damaged wells.
Baizhi Wu +5 more
doaj +1 more source
Probing structural relaxation in complex fluids by critical fluctuations
, 2004 Complex fluids, such as polymer solutions and blends, colloids and gels, are of growing interest in fundamental and applied soft-condensed-matter science.
A. F. Kostko +32 more
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Signature of elasticity in the Faraday instability
, 2004 We investigate the onset of the Faraday instability in a vertically vibrated wormlike micelle solution. In this strongly viscoelastic fluid, the critical acceleration and wavenumber are shown to present oscillations as a function of driving frequency and
D. A. Edwards +5 more
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Review of Single Bubble Motion Characteristics Rising in Viscoelastic Liquids
International Journal of Chemical Engineering, 2021 The emphasis of this review is to discuss three peculiar phenomena of bubbles rising in viscoelastic fluids, namely, the formation of a cusp, negative wake, and velocity jump discontinuity, and to highlight the possible future directions of the subject ...
Wei Wang
doaj +1 more source
Rayleigh--Taylor instability in a viscoelastic binary fluid
, 2009 The effects of polymer additives on Rayleigh--Taylor (RT) instability of immiscible fluids is investigated using the Oldroyd-B viscoelastic model. Analytic results obtained exploiting the phase-field approach show that in polymer solution the growth rate
ANDREA MAZZINO +11 more
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High performance microfluidic rectifiers for viscoelastic fluid flow [PDF]
, 2012 The flow of Newtonian and non-Newtonian fluids within microfluidic rectifiers with a hyperbolic shape was investigated to assess the effect of the bounding walls on the diodicity of the microfluidic device and achieve high flow anisotropy.
Alves, M.A. +3 more
core +1 more source