Experimental study on flow characteristics of round vertical buoyant jet under random waves

Yong Ping Chen, Chi Wai Li, Chang Kuan Zhang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

9 Citations (Scopus)


An experimental study on the flow characteristics of a round vertical buoyant jet discharged into random waves, following the previous study on that of a non-buoyant jet, has been carried out. The results show that the axial velocity decays faster in the wave environment than that in the stagnant ambience. The jet width is enlarged and the jet dilution is enhanced due to the wave effect, increasing with wave period and wave height. In order to convert those experimental findings into more general forms, the dimensional analysis method is adopted. Two new characteristic scales, i.e., wave-induced velocity scale and wave-buoyancy-length scale, are introduced and a series of empirical formulas for prediction of jet characteristic variables such as jet axial velocity, dilution and half-width are derived based on least squares fitting of available experimental data.
Original languageEnglish
Pages (from-to)1444-1451
Number of pages8
JournalShuili Xuebao/Journal of Hydraulic Engineering
Issue number12
Publication statusPublished - 1 Dec 2009


  • Experimental study
  • Random wave
  • Round buoyant jet

ASJC Scopus subject areas

  • Water Science and Technology
  • Energy Engineering and Power Technology
  • Mechanical Engineering


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