The velocity profiles of a circular jet, a square jet and a plane jet with initially laminar boundary layers were measured from the jet exit to about 45 diameters downstream with a single hot-wire probe. The rates of the maximum velocity decay and spreading of the three jets are compared. Within the range of Reynolds numbers investigated, it is found that the square jet has the highest velocity decay rate and plane jet the highest spreading rate. Although the mean velocity profiles reach self-preservation within 8 diameters, it took a longer distance for the three jets to reach self-preservation of the centerline root mean square velocity.
|Title of host publication||Proceedings of the 1999 3rd ASME/JSME Joint Fluids Engineering Conference, FEDSM'99, San Francisco, California, USA, 18-23 July 1999 (CD-ROM)|
|Publisher||American Society of Mechanical Engineers|
|Number of pages||1|
|Publication status||Published - 1999|
ASJC Scopus subject areas
- Earth and Planetary Sciences(all)
- Environmental Science(all)