Peristaltic pumping and irreversibility of a Stokesian viscoelastic fluid

Joseph Teran, Lisa Fauci, Michael Shelley

Research output: Contribution to journalArticlepeer-review

Abstract

Peristaltic pumping by wavelike contractions is a fundamental biomechanical mechanism for fluid and material transport and is used in the esophagus, intestine, oviduct, and ureter. While peristaltic pumping of a Newtonian fluid is well understood, in many important settings, as in the fluid dynamics of reproduction, the fluids have non-Newtonian responses. Here, we present a numerical method for simulating an Oldroyd-B fluid coupled to contractile, moving walls. A marker and cell grid-based projection method is used for the fluid equations and an immersed boundary method is used for coupling to a Lagrangian representation of the deforming walls. We examine numerically the peristaltic transport of a highly viscous Oldroyd-B fluid over a range of Weissenberg numbers and peristalsis wavelengths and amplitudes.

Original languageEnglish (US)
Article number073101
JournalPhysics of Fluids
Volume20
Issue number7
DOIs
StatePublished - 2008

ASJC Scopus subject areas

  • Computational Mechanics
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

Fingerprint Dive into the research topics of 'Peristaltic pumping and irreversibility of a Stokesian viscoelastic fluid'. Together they form a unique fingerprint.

Cite this