BOUNDARY-LAYER SEPARATION AT A FREE STREAMLINE. PART 3. AXISYMMETRIC FLOW AND THE FLOW DOWNSTREAM OF SEPARATION

The 1970-71 results of Ackerberg on the two-dimensional boundary-layer separation at a sharp trailing edge where a free streamline is attached, are extended to the axisymmetric case, with and without swirl. When the flow has swirl, the boundary-layer swirl velocity close to the wall may be opposite to that in the external flow; this may help explain the 'bathtub vortex paradox' observed by Sibulkin (1962). The solutions for the detached shear layers downstream of separation for two-dimensional and axisymmetric flows, with and without swirl, have been obtained. (Author)

• Supplemental Notes:
  • See also Part 2, AD-733 045. Also available in Journal of Fluid Mechanics Vol. 54 Pt 4, p645-663 1973.
• Corporate Authors:

  Polytechnic Institute of Brooklyn

  333 Jay Street
  Brooklyn, NY  United States  11201
• Authors:
  • Ackerberg, R C
• Publication Date: 1973-1-29

Media Info

• Pagination: 22 p.

Subject/Index Terms

• TRT Terms: Boundary layer separation; Three dimensional flow
• Uncontrolled Terms: Separation
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00052228
• Record Type: Publication
• Source Agency: National Technical Information Service
• Contract Numbers: DA-ARO-D31-124-73091
• Files: TRIS
• Created Date: May 7 1974 12:00AM