Experimental study of optical features of shock-heated jets
Abstract
As a result of emission and absorption measurements at various visible and IR wavelengths, the energy contents of the main radiative transitions at the stage of formation of shock-heated jets of nitrogen, carbon dioxide, and their mixtures have been defined. In the majority of regimes studied near the front of the flow, there is a region of anomalously high emissivity. The data analysis indicates that the character of nonstationary processes in a pulse jet is determined by vibrational nonequilibrium in the shock-heated gas and by accelerated freezing of relaxation near the front-line area of the jet flow.
- Publication:
-
IN: Optical methods in dynamics of fluids and solids; Proceedings of the International Symposium
- Pub Date:
- 1985
- Bibcode:
- 1985omdf.proc..349E
- Keywords:
-
- Jet Flow;
- Molecular Gases;
- Optical Properties;
- Shock Heating;
- Carbon Dioxide;
- Gas Temperature;
- Nitrogen;
- Fluid Mechanics and Heat Transfer