VORTEX LOOPS IN THE TRAILS BEHIND HYPERVELOCITY PELLETS
Abstract
The periodic shedding of vortices behind bluff bodies in subsonic flow at low Reynolds numbers is a well-known phenomenon. Self-luminous photographs of the hypervelocity trail behind spherical pellets in xenon at a free stream Mach number of about 25 are compared with those of dye-traced incompressible wakes. As a result it is postulated that, as in the subsonic case, vortex loop generation in the body base region is the controlling mechanism for transition to and development of the turbulent hypersonic wake. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1962
- Accession Number
- AD0274535
Entities
People
- Aaron Z. Goldberg
- J.a. Fay