Results 31 to 40 of about 12,948 (263)
Squirming through shear-thinning fluids [PDF]
Journal of Fluid Mechanics, 2015 Many micro-organisms find themselves immersed in fluids displaying non-Newtonian rheological properties such as viscoelasticity and shear-thinning viscosity. The effects of viscoelasticity on swimming at low Reynolds numbers have already received considerable attention, but much less is known about swimming in shear-thinning fluids.
Date, Charu +3 more
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Secondary instabilities in Taylor–Couette flow of shear-thinning fluids [PDF]
Journal of Fluid Mechanics, 2021 The stability of the Taylor vortex flow in Newtonian and shear-thinning fluids is investigated in the case of a wide gap Taylor–Couette system. The considered radius ratio is$\eta = R_1/R_2=0.4$. The aspect ratio (length over the gap width) of experimental configuration is 32.
S. Topayev, C. Nouar, J. Dusek
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Jeffery orbits in shear-thinning fluids [PDF]
Physics of Fluids, 2019 We investigate the dynamics of a prolate spheroid in a shear flow of a shear-thinning Carreau fluid. The motion of a prolate particle is developed analytically for asymptotically weak shear thinning and then integrated numerically. We find that shear-thinning rheology does not lift the degeneracy of Jeffery orbits observed in Newtonian fluids, but the ...
S. Arman Abtahi, Gwynn J. Elfring
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Rapid wetting of shear-thinning fluids
Physical Review Fluids, 2023 Using experiments and numerical simulations, we investigate the spontaneous spreading of droplets of aqueous glycerol (Newtonian) and aqueous polymer (shear-thinning) solutions on smooth surfaces. We find that in the first millisecond the spreading of the shear-thinning solutions is identical to the spreading of water, regardless of the polymer ...
Yada, Susumu +4 more
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Rayleigh–Bénard Instability of an Ellis Fluid Saturated Porous Channel with an Isoflux Boundary
Fluids, 2021 The onset of the thermal instability is investigated in a porous channel with plane parallel boundaries saturated by a non–Newtonian shear–thinning fluid and subject to a horizontal throughflow.
Pedro Vayssière Brandão +2 more
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Nonlinear Engineering, 2018 An analysis illustrating the flow of an Ostwald-de-Waele liquid film on an unsteady stretching sheet under the influence of thermocapillary force, magnetic field and viscous dissipation is carried out. In this study, thermal conductivity is assumed to be
Sreelakshmi K., Sarojamma G.
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Preparation and Performance Evaluation of a High Temperature Stable Magnetorheological Fluid with Shear-Thinning Resistance [PDF]
MaterialsHaopeng Li, Xiangfan Wu, Zuzhi Tian
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Helical propulsion in shear-thinning fluids [PDF]
Journal of Fluid Mechanics, 2016 Swimming micro-organisms often have to propel themselves in complex non-Newtonian fluids. We carry out experiments with self-propelling helical swimmers driven by an externally rotating magnetic field in shear-thinning inelastic fluids. Similarly to swimming in a Newtonian fluid, we obtain for each fluid a locomotion speed that scales linearly with the
Saúl Gómez +3 more
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Sedimentation of Suspensions in Shear-Thinning Fluids [PDF]
Oil & Gas Science and Technology, 2004 We present an experimental study of the sedimentation of non-Brownian monodisperse suspensions in polymeric shear-thinning fluids. In such media and contrary to what is observed in Newtonian fluids, no sedimentation front appears; particle aggregation moreover leads to the formation of vertical particle-rich structures and of an inhomogeneous particle ...
Daugan, S. +4 more
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Applications in Engineering ScienceThe stability of steady, fully developed flow in a long cylindrical pipe for a shear-thinning fluid (which approximates a class of viscoplastic materials) is studied using linear stability analysis. The eigenvalues of the frequency of the perturbation of
Mohan Anand +2 more
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