PRELIMINARY EXPERIMENTAL RESULTS OF THE REDUCTION OF VISCOUS EFFECTS IN A LOW-DENSITY SUPERSONIC NOZZLE BY WALL CRYOPUMPING
Abstract
A low-density supersonic nozzle was operated with carbon dioxide over a range of supply pressures from 10 to 600 microns and the trasition from a boundary layer-inviscid core flow to a full developed viscous flow was observed. A liquidnitrogen cryogenic pump was used to pump the flow through this nozzle. Sizeable reductions of viscous effects in the nozzle flow were observed when the cryogenic pump was extended to the wall of the nozzle. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1961
- Accession Number
- AD0264656
Entities
People
- W. N. Macdermott
Organizations
- Arnold Engineering Development Complex