Jet break-up and air entrainment by low velocity turbulent water jets

✍ Scribed by E. Van De Sande; John M. Smith

• Publisher: Elsevier Science
• Year: 1976
• Tongue: English
• Weight: 555 KB
• Volume: 31
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(76)85060-9

✦ Synopsis

Correlating equations are developed for air entrainment by plunging water jets with velocities in the range between 2 and 5 m/set. Energy considerations are shown to be a good basis for predictive equations. Two diierent situations are distinguished depending on whether or not the jet is near its break-up length; for jets produced by nozzles within which turbulence is fully developed the break length is correlated by L, = 320V,D,,"5 (S.I. units).

Beyond 90% of the total break length the air entrainment produced by vertical jets from 2.85 to 10 mm diameter is given by #I~ = 0.85 x 10e5 t 8.25 x lO-'pJ,?': m'lsec.