Add a Media Piece
default edit
Back to the Gallery
image of medium 206

Title: Horseshoe vortex in a cascade of turbine blades

Description: The pictures show the visualization of a horseshoe vortex developing in a cascade of turbine blades. The flow lines at the wall are created by using a layer of oil-titaniumdioxide at the wall of this wind tunnel. The shear forces in the boundary layer create the characteristic streaks that indicate the direction of the flow as well as the state (i.e. laminar, transitional, turbulent or separated) of the boundary layer. In these pictures, a horseshoe vortex forms upstream of the leading edge of the blade, and is subsequently washed to the suction side of the blade below. Downstream Mach number is about 0.95, Reynolds Number is about 600,000. Flow is from left to right.

Credits: Rainer Kurz


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.