EXPERIMENTS ON FREE AND IMPINGING UNDEREXPANDED JETS FROM A CONVERGENT NOZZLE
AERONAUTICAL RESEARCH ASSOCIATES OF PRINCETON INC NJ
Pagination or Media Count:
Experiments were performed in which the velocity profiles and decay and spreading properties of free underexpanded jets of cold air were measured. Stagnation point heat transfer parameters for impingement of these jets on various surface shapes were evaluated and correlations made with the free jet data. Pressure distribution and photographic studies of the free and impinging jets revealed that an unusual separated flow phenomenon can exist under certain impingement conditions. Problems associated with changes in jet stability and the effects of interference due to geometric arrangement of the apparatus were considered in a qualitative way.
- Fluid Mechanics