Peristaltic flow of a second-order fluid in tubes

A. M. Siddiqui, W. H. Schwarz

Research output: Contribution to journalArticlepeer-review

186 Scopus citations


We have analyzed the mechanics of peristaltic pumping of a non-Newtonian fluid through an axisymmetric conduit. The material was represented by the constitutive equation for a second-order fluid. A perturbation series (to second order) in dimensionless wavenumber of an infinite harmonic traveling wave was used to obtain explicit forms for the velocity field and a relation between the flow rate and the pressure gradient, in terms of the Reynolds number, the dimensionless non-Newtonian parameters, and the occlusion. Results were compared with other studies, in both Newtonian and non-Newtonian cases. Also, we have shown that the flow of a Newtonian fluid through a rigid, axisymmetric tube with an axial, sinusoidal variation of radius is a special case of this analysis.

Original languageEnglish (US)
Pages (from-to)257-284
Number of pages28
JournalJournal of Non-Newtonian Fluid Mechanics
Issue numberC
StatePublished - Jul 1994

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • General Materials Science
  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics


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