Title: Hairpin vortices in laminar and turbulent boundary layers II

Description: Direct Numerical Simulations revealing hairpin vortices.
Vertical planes in the spanwise (z) and normal (y) directions.
Arrows represent the spanwise and normal velocity. Blue through green lines represent constant streamwise velocity. Red lines represent constant low pressure.
a) From the laminar simulation with an artificial low speed streak.
b) From the turbulent simulation.

Credits: Department of Mechanics, KTH, Stockholm, Sweden.

References: Skote, M., Haritonidis, J.H. and Henningson, D.S. (2002)
"Varicose instabilities in turbulent boundary layers,"
Physics of Fluids. Vol 14, No 7, pp 2309-2323.

Web Page: http://www.fluidosol.se/html_lib/turbpics.html

Contributed By: Martin Skote