Influence of nozzle geometry on vibrational relaxation in an expansion flow
Abstract
An experimental study is presented of a hypersonic flow in which the rapidity of the expansion process was changed using various nozzles with different subsonic geometries but the same supersonic design. The measured vibrational temperature shows a dependence on the nozzle geometry. Comparison with calculations indicates identical magnitude of the relaxation time in expansion flows and shock waves.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- February 1976
- Bibcode:
- 1976STIN...7626435D
- Keywords:
-
- Gas Expansion;
- Gas Flow;
- Molecular Relaxation;
- Nozzle Geometry;
- Diatomic Gases;
- Gasdynamic Lasers;
- Hypersonic Flow;
- Molecular Oscillations;
- Nitrogen;
- Relaxation Time;
- Sonic Nozzles;
- Stagnation Temperature;
- Temperature Measurement;
- Fluid Mechanics and Heat Transfer