Add a Media Piece
default edit
Back to the Gallery
image of medium 108

Title: Hairpin vortex in a channel flow

Description: Turbulence is chaotic by definition, but previous work has shown that turbulent flow is organized into coherent stuctures. We use a method called Direct Lyapunov Exponent to investigate one of these structures: an isolated hairpin vortex in a channel flow. This image is in a plane a constant distance from a wall on which this structure sits. The light color outlines the hairpin vortex. See also turbulent channel flow.


Credits: M. A. Green, C. W. Rowley & G. Haller*

References: Green, M. A., Rowley, C. W. & Haller, G. Detection of Lagrangian coherent structures in three-dimensional turbulence, Journal of Fluid Mechanics, 572, 2007, 111-120.

Web Page:

Contributed By:

The eFluids editor for videos is G. M. "Bud" Homsy (
and for images is Jean Hertzberg (
Please contact them if you have any problems, questions, or concerns related to the galley or videos and images.
© Copyright on the videos is held by the contributors.
Apart from Fair Use, permission must be sought for any other purpose.