On the some issues of particle motion in the flow of viscoelastic fluids

Li, Zhenna; Lin, Jianzhong

doi:10.1007/s10409-022-09008-x

Cited by 6 publications

(2 citation statements)

References 73 publications

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“…Examples of these particle-laden non-Newtonian flows include fibre-reinforced polymers or rubbers (D'Avino & Maffettone 2015), red blood cell (RBC) transport in the vessels (Ye, Phan-Thien & Lim 2016; Beris et al. 2021), viscoelasticity-based cell separations in microfluidics (Lin & Huo 2015; D'Avino, Greco & Maffettone 2017; Li & Lin 2022), the fibre-like microorganisms swimming in non-Newtonian fluid environments (Storm et al. 2005; Li & Ardekani 2016), just to name a few.…”

Section: Introductionmentioning

confidence: 99%

Rotational dynamics of a neutrally buoyant prolate spheroid in viscoelastic shear flows at finite Reynolds numbers

Zhao

2023

J. Fluid Mech.

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Non-spherical particles exhibit peculiar behaviour in non-Newtonian flows. In this paper, we numerically investigate the dynamics of a neutrally buoyant prolate spheroid immersed in viscoelastic shear flows at finite Reynolds numbers by means of the immersed boundary method. Our results show that the period of particle rotation changes monotonically with the solvent viscosity ratio but non-monotonically with the mobility factor. Furthermore, we find five rotation modes of the spheroid under the effects of fluid inertia and fluid rheology in the present flow configuration. With weak fluid inertia, the particle rotation rate is remarkably reduced by fluid elasticity, which also induces asymmetric rotational behaviour. While the particle tends to tumble in the shear plane with weak fluid elasticity and moderate fluid inertia. However, as the fluid elasticity increases, the particle rotates with a newly observed mode, named the asymmetric-kayaking mode, which is classified by two additional critical elastic numbers that differ from the earlier studies on Stokesian viscoelastic shear flows. The present findings imply the importance of fluid inertia and fluid elasticity on the particle dynamics and could be potentially used to control the particle orientations in viscoelastic fluid flows.

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Section: Introductionmentioning

confidence: 99%

Rotational dynamics of a neutrally buoyant prolate spheroid in viscoelastic shear flows at finite Reynolds numbers

Zhao

2023

J. Fluid Mech.

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“…Finally, Li and Lin [4] examine the motion of small particles in confined shear flow of viscoelastic fluids, looking at the issues associated with the ability to correctly reproduce features such as the lateral equilibrium position of the particles, the interaction and aggregation of multiple particles as well as the chain structure that they form, or the motion of non-spherical particles.…”

mentioning

confidence: 99%

Dispersed multiphase flows: advances in measuring, simulation and modeling

Marchioli

Zhao

2022

Acta Mech. Sin.

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Dispersed multiphase flows are commonly encountered in a wide variety of natural and industrial applications, from sedimentation in rivers and plankton surfacing in oceanic flows to fluidized bed in chemical reactors and pneumatic conveying systems. In these flows, a dispersed phase (consisting of particles, droplets and/or bubbles) is transported by a carrier phase. The interaction between the phases results in complex dynamics (e.g., transport, spatial clustering, and deformation or break-up) that is rich in physics and poses a wide spectrum of theoretical, computational, and experimental challenges. These challenges are at the very core of the research efforts made by the multiphase flow community over the past decades.Our motivation to publish a special issue focused on some of the recent advances in the measuring, simulation, and modeling of dispersed multiphase flows, arose during the 1st BICTAM-CISM Symposium "Dispersed Multiphase Flows: from Measuring to Modeling", which was co-organized by Beijing International Center for Theoretical and Applied Mechanics (BICTAM) and International Centre for Mechanical Sciences (CISM) in 2021. Due to the restrictions imposed by the Covid-19 pandemic, the symposium was held as a virtual event from March 2, 2021 to March 5, 2021. More than 70 experts and scholars from 12 countries,

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