Structure and penetration of a transverse fluid jet injected at supercritical pressure in supersonic flow
Abstract
The structure and penetration of a transverse nitrogen jet injected at supercritical pressure into supersonic flow was examined experimentally. The supercritical nitrogen fluid rapidly vaporized in the relatively low static pressure environment of the supersonic stream. Spark shadowgraph imaging was employed to examine the penetration characteristics and turbulent structure of supercritical nitrogen and also subcooled ethanol liquid jets. For the conditions studied, the supercritical nitrogen jet penetrated significantly less than jets consisting of subcooled ethanol. The supercritical nitrogen jet was also characterized by large-scale structure not observed for the case of subcooled ethanol injection. Practical difficulties inherent in the use of liquid fuel simulants in unheated supersonic flow to simulate a supersonic combustion environment are briefly discussed.
- Publication:
-
Joint Propulsion Conference and Exhibit
- Pub Date:
- July 1992
- Bibcode:
- 1992jpnt.confRV...H
- Keywords:
-
- Fluid Injection;
- Jet Flow;
- Liquid Nitrogen;
- Supercritical Pressures;
- Supersonic Flow;
- Ethyl Alcohol;
- Liquid Fuels;
- Supersonic Combustion;
- Vapor Pressure;
- Fluid Mechanics and Heat Transfer