Stability of the interface in co-extrusion flow of two viscoelastic fluids through a pipe

Kangping Chen, Zhang Yi Zhang

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The linear stability of co-extrusion flow of two upper convected Maxwell fluids through a pipe at low Reynolds numbers is studied for arbitrary wavelenth disturbances. The fluids interface can become unstable due to various mechanisms. It is shown that elasticity of the fluids can stabilize the capillary instability and a linearly stable interface can be achieved by appropriate choice of controlling parameters. (Authors)

Original languageEnglish (US)
Pages (from-to)489-502
Number of pages14
JournalJournal of Fluid Mechanics
Volume247
StatePublished - 1993

Fingerprint

Extrusion
Pipe
Maxwell fluids
Fluids
fluids
low Reynolds number
disturbances
elastic properties
Elasticity
Reynolds number

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)
  • Condensed Matter Physics

Cite this

Stability of the interface in co-extrusion flow of two viscoelastic fluids through a pipe. / Chen, Kangping; Yi Zhang, Zhang.

In: Journal of Fluid Mechanics, Vol. 247, 1993, p. 489-502.

Research output: Contribution to journalArticle

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AB - The linear stability of co-extrusion flow of two upper convected Maxwell fluids through a pipe at low Reynolds numbers is studied for arbitrary wavelenth disturbances. The fluids interface can become unstable due to various mechanisms. It is shown that elasticity of the fluids can stabilize the capillary instability and a linearly stable interface can be achieved by appropriate choice of controlling parameters. (Authors)

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