FLUERICS: 22. AN EXPERIMENTAL STUDY OF BOUNDED AND CONFINED JETS,
Abstract
An experimental study was conducted to determine the characteristics of a turbulent bounded jet and a confined jet. The bounded jet (bounded by plates above and below) of aspect ratio 7 was found to have characteristics similar to those of the free jet with respect to velocity profiles, centerline velocity decay, and spread growth. However, the values of the spread parameter were higher than the Reichardt value. This was found to be caused by the bounding plates reducing the amount of air entrained by the jet. Three configurations of nozzle aspect ratio and channel ratio were used in the confined jet (enclosed on the top, bottom and sides) studies. The confined jet, spreading under the influence of an adverse pressure gradient, differed in behavior from the free jet. It was characterized by nonlinear spreading at a faster rate than that of the free jet. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1966
- Accession Number
- AD0644737
Entities
People
- Richard D. Trapani
Organizations
- Harry Diamond Laboratories