HAIRPIN VORTEX IN A CHANNEL FLOW
M. A. Green, C. W. Rowley & G. Haller*
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.
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.