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- W2276561816 abstract "In this paper, the stability of a plane, unidirectional Couette flow of a dense granular material is investigated via the means of a normal mode stability analysis. Our studies are based on a continuum mechanical model for the flows of interest coupled with the constitutive expressions for the normal and the shear stresses of the granular material induced by the ${itmu}(I)$ -rheology. According to our analysis, both the Couette gap and the wall velocity play a destabilizing role in the flows of interest as opposed to the initial concentration that acts as stabilizer. For sufficiently high Couette gaps and wall velocities, unstable modes are recovered. The predicted instability manifests itself through shear-induced dilatancy that, in turn, engenders particle migration and the formation of bulbs, similar to the ones that have been acquired through molecular dynamics simulations." @default.
- W2276561816 created "2016-06-24" @default.
- W2276561816 creator A5006963619 @default.
- W2276561816 creator A5065736570 @default.
- W2276561816 date "2016-02-22" @default.
- W2276561816 modified "2023-09-23" @default.
- W2276561816 title "Stability of wall bounded, shear flows of dense granular materials: the role of the Couette gap, the wall velocity and the initial concentration" @default.
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- W2276561816 doi "https://doi.org/10.1017/jfm.2016.65" @default.
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