The INI has a new website!

This is a legacy webpage. Please visit the new site to ensure you are seeing up to date information.

Skip to content



Locomotion of helical bodies in viscoelastic fluids

Spagnolie, S (University of Wisconsin-Madison)
Tuesday 25 June 2013, 09:45-10:30

Meeting Room 2, CMS


Many microorganisms swim by rotating one or many helical flagella, often propelling themselves through fluids that exhibit both viscous and elastic qualities in response to deformations. In an effort to better understand the complex interaction between the fluid and body in such systems, we have studied numerically the force-free swimming of a rotating helix in a viscoelastic (Oldroyd-B) fluid. The introduction of viscoelasticity can either enhance or retard the swimming speed depending on the body geometry and the properties of the fluid (through a dimensionless Deborah number). The numerical results show how small-amplitude theoretical calculations connect smoothly to large-amplitude experimental measurements.

Co-authors: Bin Liu (Brown University), Thomas R. Powers (Brown University)

Back to top ∧