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 Scopus citations


The linear stability of co-extrusion flow of two upper convected Maxwell fluids through a pipe at low Reynolds numbers is studied for arbitrary wavelength 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.

Original languageEnglish (US)
Pages (from-to)489-502
Number of pages14
Journaljournal of fluid mechanics
StatePublished - Feb 1993


ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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