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

Daejin Won, Chongyoup Kim

Research output: Contribution to journalArticle

55 Citations (Scopus)

Abstract

In this study, we performed experiments on the alignment and chaining of non-colloidal, spherical particles suspended in viscoelastic liquid under simple shear flow as a model problem for investigating the microstructure formation in viscoelastic suspensions. Monolayer experiments show that both the chain-like structure and uniformly distributed structure can be observed after the dynamic steady state has been reached depending upon fluid rheology. Even though the driving force for the migration is the first normal stress difference of viscoelastic liquid, shear thinning is responsible for the formation of string-like structure.

Original languageEnglish
Pages (from-to)141-146
Number of pages6
JournalJournal of Non-Newtonian Fluid Mechanics
Volume117
Issue number2-3
DOIs
Publication statusPublished - 2004 Feb 20

Keywords

  • Alignment
  • Chaining
  • First normal stress difference
  • Microstructure
  • Shear thinning

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

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