| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Chaparian, Emad
University of Strathclyde
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2023Squeeze cementing of micro-annulicitations
- 2022Computational rheometry of yielding and viscoplastic flow in vane-and-cup rheometer fixturescitations
- 2022Flow onset for a single bubble in a yield-stress fluidcitations
- 2021The first open channel for yield-stress fluids in porous mediacitations
- 2021Clouds of bubbles in a viscoplastic fluidcitations
- 2020Yield-stress fluids in porous mediacitations
- 2020Stability of particles inside yield-stress fluid Poiseuille flowscitations
- 2020Particle migration in channel flow of an elastoviscoplastic fluidcitations
- 2020Computing the yield limit in three-dimensional flows of a yield stress fluid about a settling particlecitations
- 2019An adaptive finite element method for elastoviscoplastic fluid flowscitations
- 2018L-box - A tool for measuring the "yield stress"citations
- 2017Cloakingcitations
- 2017Yield limit analysis of particle motion in a yield-stress fluidcitations
Places of action
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article
Particle migration in channel flow of an elastoviscoplastic fluid
Abstract
We study the dynamics of a neutrally buoyant rigid sphere carried by an elastoviscoplastic fluid in a pressure- driven channel flow numerically. The yielding to flow is marked by the yield stress which splits the flow into two main regions: the core unyielded region and two sheared yielded regions close to the walls. The particles which are initially in the plug region are observed to translate with the same velocity as the plug without any rotation/migration. Keeping the Reynolds number fixed, we study the effect of elasticity (Weissenberg number) and plasticity (Bingham number) of the fluid on the particle migration inside the sheared regions. In the viscoelastic limit, in the range of studied parameters (low elasticity), inertia is dominant and the particle finds its equilibrium position between the centreline and the wall. The same happens in the viscoplastic limit, yet the yield surface plays the role of centreline. However, the combination of elasticity and plasticity of the suspending fluid (elastoviscoplasticity) trigger particle-focusing: in the elastoviscoplastic flow, for a certain range of Weissenberg numbers (about 0.5), isolated particles migrate all the way to the centreline by entering into the core plug region. This behaviour suggests a particle-focusing process for inertial regimes which was not previously found in a viscoelastic or viscoplastic carrying fluid.