EXPERIMENTAL INVESTIGATION OF VORTEX GENERATION IN A TURBULENT BOUNDARY LAYER UNDERGOING ADVERSE PRESSURE GRADIENT

The investigation was undertaken to reveal the existence of streamwise vortices in nominally 2-dimensional boundary layers undergoing adverse pressure gradient. Boundary layer profiles of static pressure, pitot pressure, and stagnation temperature are taken at a surface station with a local inclination of 20 degrees. Profile measurements are obtained at various peripheral stations. The measurements reveal zero peripheral variations at the surface of the body and at the edge of the boundary layer. However, distinct wavy pressure variations are observed within the boundary layer profiles, indicating the existence of longitudinal vortex cells within the boundary layer.

• Corporate Authors:

  National Aeronautics and Space Administration

  600 Independence Avenue, SW
  Washington, DC  United States  20546
• Authors:
  • Zakkay, V
  • Calarese, W
• Publication Date: 1972-6

Media Info

• Pagination: 42 p.

Subject/Index Terms

• TRT Terms: Boundary layer; Turbulence; Turbulent boundary layer; Two dimensional flow; Velocity
• Uncontrolled Terms: Pressure gradients
• Old TRIS Terms: Boundary layer theory; Velocity profiles
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00044589
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: CR-2037 Contr Rpt
• Files: TRIS
• Created Date: Aug 15 1973 12:00AM