Add a Media Piece
 
default edit
Back to the Gallery
image of medium 148

Title: Mach 2.5 turbulent boundary layer

Description: In this image, Rayleigh scattering is used to visualize a streamwise cross-section of the density field of a turbulent flat plate boundary layer at Mach 2.5 in a plane parallel to the wall at y/delta = 0.72. The Reynolds number based on momentum thickness is about 25,000. The flow is from left to right. The Rayleigh scattering is enhanced by the presence of nano-scale water droplets that form in the nozzle as the flow expands to the freestream Mach number. The image has been false-colored to emphasize the diffuse edges of the low-density bulges (the "clouds") and the high-density of the edge fluid (the blue "sky"). A side view is also available. *NASA Langley Research Center

Credits: M. W. Smith* and Alexander J. Smits

References: Smith, M. W. and Smits, A. J., Visualization of the Structure of Supersonic Turbulent Boundary Layers. Experiments in Fluids 18, 288-302, 1995.

Web Page:

Contributed By:

 
The eFluids editor for videos is G. M. "Bud" Homsy (bud@math.ubc.ca)
and for images is Jean Hertzberg (Hertzberg@colorado.edu).
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.