Shear Thickening Oscillation in a Dilatant Fluid
Hiizu Nakanishi,Namiko Mitarai +1 more
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TLDR
In this article, a phenomenological fluid dynamical model of a dilatant fluid is presented, which is a dense mixture of fluid and granules that shows severe shear thickening.Abstract:
By introducing a state variable, we construct a phenomenological fluid dynamical model of a dilatant fluid, i.e., a dense mixture of fluid and granules that shows severe shear thickening. We demonstrate that the fluid shows shear thickening oscillation, namely, the fluid flow oscillates owning to the coupling between the fluid dynamics and the internal dynamics of state. We also demonstrate that the jamming leads to a peculiar response to an external impact on the fluid.read more
Citations
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Kinetic theory of shear thickening for a moderately dense gas-solid suspension: From discontinuous thickening to continuous thickening.
TL;DR: In this paper, the Enskog kinetic theory for moderately dense gas-solid suspensions under simple shear flow is considered as a model to analyze the rheological properties of the system.
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Fluctuations in flow produced by competition between apparent wall slip and dilatancy
TL;DR: In this article, a system that rapidly fluctuates between two flow states is characterized, and it is shown that fluctuations occur because neither regime is capable of supporting a constant stress in a stable manner.
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Experimental observation of shear thickening oscillation
TL;DR: In this paper, the spontaneous macroscopic oscillation in the shear flow of severe shear thickening fluid was observed using a density-matched starch-water mixture, and well-marked vibrations of frequency around 20 Hz appeared via a Hopf bifurcation upon increasing externally applied shear stress.
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Experimental observation of shear thickening oscillation
TL;DR: In this paper, the spontaneous macroscopic oscillation in the shear flow of severe shear thickening fluid was observed, which is caused by the interplay between the fluid dynamics and shear thinning.
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Granular flow: Dry and wet
Namiko Mitarai,Hiizu Nakanishi +1 more
TL;DR: In this paper, the authors present the unique features of granular materials focusing on the shear flow of dry granular material and granule-liquid mixture and show that the non-equilibrium nature of these materials makes their rheology quite different from that of molecular systems.
References
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Shear‐Thickening (“Dilatancy”) in Suspensions of Nonaggregating Solid Particles Dispersed in Newtonian Liquids
TL;DR: The literature on shear thickening is currently at over 100 articles as mentioned in this paper, and a review of the literature can be found in the paper "A review of recent work in the field of shear thinning".
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Jamming, Force Chains, and Fragile Matter
TL;DR: In this article, the authors consider materials whose mechanical integrity is the result of a jamming process and argue that such media are generically ''fragile'' unable to support certain types of incremental loading without plastic rearrangement.
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LVII. On the dilatancy of media composed of rigid particles in contact. With experimental illustrations
TL;DR: In this article, the dilatancy of media composed of rigid particles in contact is studied and an experimental illustration of the effect of the dilated media on the density of the particles is provided.
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Shear thickening in colloidal dispersions
Norman J. Wagner,John F. Brady +1 more
TL;DR: The change in viscosity that occurs when colloidal fluids experience shear stress has been studied in this article, where the authors identify a number of materials whose rheology changes due to the shear stresses.
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Discontinuous and dilatant viscosity behavior in concentrated suspensions. I. Observation of a flow instability.
TL;DR: In this article, it was shown that the discontinuity is caused by a flow instability in which surfaces of spheres, packed in a two dimensional hexagonal packing at low shear rates, break up into less ordered arrays of spheres.