Alignment and aggregation of spherical particles in viscoelastic fluid under shear flow

Won, Daejin; Kim, Chongyoup

doi:10.1016/j.jnnfm.2004.01.005

Cited by 72 publications

(65 citation statements)

References 8 publications

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“…These studies also established that viscoelasticity is not a sufficient condition for structure formation, since alignment is not observed in viscoelastic Boger fluids. 4,5 Instead, these authors suggested that shear-thinning is a necessary condition for shear-induced alignment of spherical particles. The recent work of Pasquino et al 6 on dilute suspensions of hard spheres in a worm-like micellar solution showed the formation of string-like structures at low shear rates and 2D crystals at high shear rates.…”

Section: Introductionmentioning

confidence: 99%

Alignment of particles in sheared viscoelastic fluids

Oliveira

Noort

Padding

et al. 2011

The Journal of Chemical Physics

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Document VersionPublisher's PDF, also known as Version of Record (includes final page, issue and volume numbers) Please check the document version of this publication:• A submitted manuscript is the author's version of the article upon submission and before peer-review. There can be important differences between the submitted version and the official published version of record. People interested in the research are advised to contact the author for the final version of the publication, or visit the DOI to the publisher's website.• The final author version and the galley proof are versions of the publication after peer review.• The final published version features the final layout of the paper including the volume, issue and page numbers. Link to publication General rightsCopyright and moral rights for the publications made accessible in the public portal are retained by the authors and/or other copyright owners and it is a condition of accessing publications that users recognise and abide by the legal requirements associated with these rights.• Users may download and print one copy of any publication from the public portal for the purpose of private study or research.• You may not further distribute the material or use it for any profit-making activity or commercial gain • You may freely distribute the URL identifying the publication in the public portal ? Take down policyIf you believe that this document breaches copyright please contact us providing details, and we will remove access to the work immediately and investigate your claim. Related ArticlesStability of solvated nanosheet in shear flow Appl. Phys. Lett. 97, 214102 (2010) Analysis of the configurational temperature of polymeric liquids under shear and elongational flows using nonequilibrium molecular dynamics and Monte Carlo simulations J. Chem. Phys. 132, 184906 (2010) Dynamics and rheology of wormlike micelles emerging from particulate computer simulations J. Chem. Phys. 129, 074903 (2008) Coarse-grained molecular dynamics simulation on the placement of nanoparticles within symmetric diblock copolymers under shear flow J. Chem. Phys. 128, 164909 (2008) Nonequilibrium molecular dynamics of the rheological and structural properties of linear and branched molecules. Simple shear and poiseuille flows; instabilities and slip J. Chem. Phys. 123, 054907 (2005) Additional information on J. Chem. Phys. We investigate the shear-induced structure formation of colloidal particles dissolved in nonNewtonian fluids by means of computer simulations. The two investigated visco-elastic fluids are a semi-dilute polymer solution and a worm-like micellar solution. Both shear-thinning fluids contain long flexible chains whose entanglements appear and disappear continually as a result of Brownian motion and the applied shear flow. To reach sufficiently large time and length scales in threedimensional simulations with up to 96 spherical colloids, we employ the responsive particle dynamics simulation method of modeling each chain as a single soft Brownian par...

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Section: Introductionmentioning

confidence: 99%

Alignment of particles in sheared viscoelastic fluids

Oliveira

Noort

Padding

et al. 2011

The Journal of Chemical Physics

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“…The effect of the suspending fluid on flow-induced alignment of small spherical particles was also investigated by Scirocco et al. [103] and Wom and Kim [122]. Both works verified that the alignment was not gov- when the system was sheared at 30 s −1 (adapted from [92]).…”

Section: 2)mentioning

confidence: 88%

“…In these studies it was suggested that colloidal alignment appears when the Weissenberg number, defined as the ratio of first normal stress difference to shear stress, is larger than 10. Subsequent work by Scirocco et al [103] and Won and Kim [122] showed that this critical Weissenberg number is not universal. These studies also established that viscoelasticity is not a sufficient condition for structure formation, since alignment is not observed in viscoelastic Boger fluids [103,122].…”

Section: Introductionmentioning

confidence: 98%

“…Subsequent work by Scirocco et al [103] and Won and Kim [122] showed that this critical Weissenberg number is not universal. These studies also established that viscoelasticity is not a sufficient condition for structure formation, since alignment is not observed in viscoelastic Boger fluids [103,122]. Instead, these authors suggested that shear-thinning is a necessary condition for shear-induced alignment of spherical particles.…”

Section: Introductionmentioning

confidence: 98%

“…It is known that spheres in dilute or semidilute viscoelastic polymer solutions form strings in the presence of flow, usually oriented in the flow direction [72,82,92,103,122]. As soon as the flow is ceased or the shear rate drops below a critical value, the colloids again disperse to distribute homogeneously over the fluid's volume.…”

Section: Introductionmentioning

confidence: 99%

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