Skip to main content

Part of the book series: NATO ASI Series ((NSSE,volume 255))

Abstract

Most outfalls consist of a long length pipe with a diffuser at the seaward end. The diffuser is a continuation of the outfall pipe, but it has ports on either side through which the effluent is discharged. The flow region close to the pipe is extremely complicated particularly at either end of the diffuser. However, an approximate solution to the dilution may be obtained by considering an infinite array of equally spaced merging buoyant jets. This solution is verified for the single buoyant jet and buoyant slot jet and gives reasonable results for the dilutions and the trajectories from experiments for merging buoyant jets. This is the first stage of understanding the behaviour of merging jets in a crossflow and some results are presented in the crossflow case.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Chapter
USD 29.95
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
eBook
USD 259.00
Price excludes VAT (USA)
  • Available as PDF
  • Read on any device
  • Instant download
  • Own it forever
Softcover Book
USD 329.99
Price excludes VAT (USA)
  • Compact, lightweight edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info
Hardcover Book
USD 329.99
Price excludes VAT (USA)
  • Durable hardcover edition
  • Dispatched in 3 to 5 business days
  • Free shipping worldwide - see info

Tax calculation will be finalised at checkout

Purchases are for personal use only

Institutional subscriptions

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

5. References

  • AYOUB, G.M. 1973 Test results on buoyant jets injected horizontally in a cross flowing stream. Water Air and Soil Pollution, 2, 409–426.

    Article  Google Scholar 

  • CHU, V.H. 1985 Oblique turbulent jets in a cross flow. J. Engng Mech., ASCE, 111(11), 1343–1360.

    Article  Google Scholar 

  • CHU, V.H. and B AINES, W.D. 1989 Entrainment by buoyant jet between confined walls, J. Hyd. Eng. ASCE, 115(4), 475–492.

    Article  Google Scholar 

  • DAVIDSON, M.J. 1989 The behaviour of single and multiple horizontally-discharged buoyant flows in a non turbulent coflowing ambient fluid. Report No. 89–3, Department of Civil Engineering, University of Canterbury, New Zealand.

    Google Scholar 

  • DAVIDSON, M.J., KNUDSEN, M. and WOOD, I.R. 1988 The behaviour of an ocean outfall plume in a non turbulent coflow. Proc. Int. Conference on Marine Disposal of Wastewater, Wellington, New Zealand.

    Google Scholar 

  • EVERITT, K.W. and ROBINS A.G. 1978 The development and structure of turbulent plane jets. J. Fluid Mech., 88, 563–583.

    Article  ADS  Google Scholar 

  • FISCHER, H.B., LIST, E.J., KOH, R.C.Y., IMBERGER, J., and BROOKS, N.H. 1979 Mixing in Inland and Coastal Waters. Academic Press, New York.

    Google Scholar 

  • KNUDSEN, M. 1988 Buoyant horizontal jets in an ambient flow, Ph D thesis, University of Canterbury, New Zealand.

    Google Scholar 

  • KNYSTAUTAS, R. 1964 The turbulent jet from a series of holes, Aeronautical Quarterly, XV, 1–28.

    Google Scholar 

  • KOTSOVINOS, N.E. 1975 A study of the entrainment and turbulence in a plane buoyant jet, Ph D thesis, Report No KH-R-32, California Institute of Technology, Pasadena, USA

    Google Scholar 

  • LIST, E.J. 1982 Mechanics of turbulent buoyant jets and plumes. in Turbulent Buoyant Jets and Plumes (ed W. Rodi), 1–68, Pergamon Press, Oxford.

    Google Scholar 

  • MENDEZ-DIAZ, M. 1992 Experimental investigation on unidirectional multiport diffuser discharges in coflowing deep water. M Sc Thesis, Cornell University, Ithaca NY, USA.

    Google Scholar 

  • PAPANICOLAOU, P.N. 1984 Mass and momentum transport in a turbulent buoyant vertical axisymmetric jet. Ph D thesis, W.M. Keck Laboratory of Hydraulic and Water Resources, California Institute of Technology, Pasadena, U.S.A.

    Google Scholar 

  • PATEL, R.P. 1971 Turbulent jets and wall jets in uniform streaming flow. Aeronautical Quarterly, XXII, 311–326.

    Google Scholar 

  • TURNER, J.S. 1973 Buoyancy Effects in Fluids. Cambridge University Press, Cambridge, UK

    Book  MATH  Google Scholar 

  • WOOD, I.R. 1993 Asymptotic solutions and behavior of outfall plumes. J. Hydraul. Engng, ASCE, 119(5), 555–580.

    Article  Google Scholar 

  • WOOD, I.R., DAVIDSON, M.R. and CHENG, R. 1991 The behaviour of merging plumes from an outfall diffuser. in Environmental Hydraulics (eds J.H-W. Lee and Y.K. Cheung), Balkema Press, 31–41.

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 1994 Springer Science+Business Media Dordrecht

About this chapter

Cite this chapter

Davidson, M.J., Papps, D.A., Wood, I.R. (1994). The Behaviour of Merging Buoyant Jets. In: Davies, P.A., Neves, M.J.V. (eds) Recent Research Advances in the Fluid Mechanics of Turbulent Jets and Plumes. NATO ASI Series, vol 255. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-0918-5_29

Download citation

  • DOI: https://doi.org/10.1007/978-94-011-0918-5_29

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-010-4396-0

  • Online ISBN: 978-94-011-0918-5

  • eBook Packages: Springer Book Archive

Publish with us

Policies and ethics