scholarly journals Spherical particle sedimenting in weakly viscoelastic shear flow

2017 ◽  
Vol 2 (6) ◽  
Author(s):  
Jonas Einarsson ◽  
Bernhard Mehlig
Keyword(s):  
Shear Flow ◽  
Spherical Particle

Corrigendum to Lift and drag force on a spherical particle in a viscoelastic shear flow Journal of Non-Newtonian Fluid Mechanics 280 (2020) 104279

2020 ◽  
Vol 282 ◽  
pp. 104323
Author(s):  
Anni Zhang ◽  
William L. Murch ◽  
Jonas Einarsson ◽  
Eric S.G. Shaqfeh
Keyword(s):  
Shear Flow ◽  
Fluid Mechanics ◽  
Spherical Particle ◽  
Drag Force ◽  
Newtonian Fluid ◽  
Lift And Drag

Motion of a spherical particle along a rough wall in a shear flow

2018 ◽  
Vol 69 (5) ◽  
Author(s):  
Redouane Assoudi ◽  
Mohamed Chaoui ◽  
François Feuillebois ◽  
Hassane Allouche
Keyword(s):  
Shear Flow ◽  
Spherical Particle ◽  
Rough Wall

Forces on a spherical particle with an arbitrary axis of rotation in a weak shear flow of a highly rarefied gas

2009 ◽  
Vol 21 (4) ◽  
pp. 047102 ◽  
Author(s):  
Nan Liu ◽  
David B. Bogy
Keyword(s):  
Shear Flow ◽  
Spherical Particle ◽  
Rarefied Gas ◽  
Axis Of Rotation ◽  
Arbitrary Axis

A Spherical Particle Surrounded by a Thin Double Layer in a Simple Shear Flow

1993 ◽  
Vol 158 (1) ◽  
pp. 85-95 ◽  
Author(s):  
Andrej S. Dukhin ◽  
Theo G.M. van de Ven
Keyword(s):  
Shear Flow ◽  
Spherical Particle ◽  
Double Layer ◽  
Simple Shear ◽  
Simple Shear Flow

Movement of a Sphere on a Flat Wall in Non-Newtonian Shear Flow

2017 ◽  
Author(s):  
Yaroslav Ignatenko ◽  
Oleg Bocharov ◽  
Roland May
Keyword(s):  
Shear Flow ◽  
Spherical Particle ◽  
Drag Force ◽  
Newtonian Fluid ◽  
Particle Velocity ◽  
Lift Force ◽  
Fundamental Problem ◽  
Rheological Parameters ◽  
Translational Velocity ◽  
Force Coefficient

For a particle on a wall or cuttings bed in a multiphase flow in confined geometries a condition for onset and lift-off is very important. In this case, a fundamental problem of hydrodynamic forces and torque acting on a particle moving near and on the wall in a viscous fluid needs to be solved. In this paper, systematical simulation of a flow was performed around a perfect rolling or sliding spherical particle near the wall. A shear flow of Newtonian and Herschel-Bulkley fluids was investigated. The simulation was conducted for Reynolds numbers up to 200 and the dimensionless positive particle velocity Vp < 1.4. The relative particle velocity was made dimensionless by dividing it by the incoming flow velocity in front of the particle. The simulation was performed using the open-source CFD package OpenFOAM. The simulation results for Newtonian fluid agree with data presented in the literature. For the particle’s low translational velocity the drag force coefficient in the non-Newtonian fluid is lower than in Newtonian fluid, but for increasing translational velocity the drag force coefficient increases. The lift force coefficient behavior is non-monotonic versus rheology parameters. Lift and drag force show a sudden drop for very small translational velocities. Our simulation shows that in the case of large Bingham numbers the particle’s lift force can be negative for steady perfect particle rolling. Thus, friction between particle and surface prevents particle’s take-off in some cases. Knowing the dependence of the lift force on Reynolds number and rheological parameters allows one to determine incipient motion and take-off conditions for a spherical particle.

Effect of shear flow on the hydrodynamic drag force of a spherical particle near wall evaluated using optical tweezers and microfluidics

Soft Matter ◽  
2021 ◽  
Author(s):  
Lester Canque Geonzon ◽  
Motoyoshi Kobayashi ◽  
Yasuhisa Adachi
Keyword(s):  
Shear Flow ◽  
Spherical Particle ◽  
Optical Tweezers ◽  
Drag Force ◽  
Simple Shear ◽  
Microfluidic Channel ◽  
Hydrodynamic Drag ◽  
Simple Shear Flow ◽  
Near Wall

The hydrodynamic drag force on a spherical particle in shear flow near-wall is investigated using optical tweezers and microfluidics. Simple shear flow is applied using a microfluidic channel at different...

scholarly journals Lift and drag force on a spherical particle in a viscoelastic shear flow

2020 ◽  
Vol 280 ◽  
pp. 104279 ◽  
Author(s):  
Anni Zhang ◽  
William L. Murch ◽  
Jonas Einarsson ◽  
Eric S.G. Shaqfeh
Keyword(s):  
Shear Flow ◽  
Spherical Particle ◽  
Drag Force ◽  
Lift And Drag
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