Deposition from Particle-Laden, Round, Turbulent, Horizontal, Buoyant Jets in Stationary and Coflowing Receiving Fluids
Publication: Journal of Hydraulic Engineering
Volume 134, Issue 4
Abstract
Results are presented from a series of laboratory experiments investigating the characteristic features of particle-laden, round, turbulent, buoyant jets discharged horizontally into stationary and coflowing receiving fluids. For the volumetric source concentrations of particles tested ( 0.1%), the presence of the particle load was found to have no significant influence on mean buoyant jet trajectories. Deposition patterns on the bed of the receiving water container indicated the existence of two separate sedimentation processes for discharges into stationary or coflowing ambients, namely (1) a relatively concentrated, narrow band of particle accumulation associated with near-source fallout from the buoyant jet margins; and (2) a broader and more disperse downstream depositional fan associated with particle fallout from the radially-expanding surface gravity current formed by the impingement of the buoyant jet with the free surface of the receiving fluid. Scaling arguments have been developed and applied successfully to deposition length scales associated with these sedimentation patterns, allowing the quantitative characteristics and parametric dependences of the deposition distributions to be established.
Get full access to this article
View all available purchase options and get full access to this article.
Acknowledgments
The work described in this paper was funded by a research grant from the UK Engineering and Physical Sciences Research Council (EPSRC) as part of a collaborative investigation with colleagues Peter Stansby, David Apsley, Giordano Lipari and Gregory Lane-Serff at the University of Manchester into sedimentation from wastewater discharges. The writers are grateful for the contributions of these colleagues and for the technical help provided by John Anderson and Gary Connacher. Additional support provided by Dantec Dynamics is also acknowledged with thanks. The comments of an anonymous reviewer led to significant improvements in the manuscript.EPSRC-GB
References
Cardoso, S. S. S., and Zarrebini, M. (2001a). “Convection driven by particle settling surrounding a turbulent plume.” Chem. Eng. Sci., 56, 3365–3375.
Cardoso, S. S. S., and Zarrebini, M. (2001b). “Sedimentation of polydispersed particles from a turbulent plume.” Chem. Eng. Sci., 56, 4725–4736.
Chan, D. T. L., and Kennedy, J. F. (1975). “Submerged buoyant jets in quiescent fluids.” J. Hydr. Div., 101(HY6), 733–747.
Cuthbertson, A. J. S., Apsley, D. D., Davies, P. A., Lipari, G., and Stansby, P. K. (2008). “Deposition from particle-laden, plane, turbulent, buoyant jets.” J. Hydraul. Eng., in press.
Dalziel, S. B. (1992). “Decay of rotating turbulence: Some particle tracking experiments.” Appl. Sci. Res., 49, 217–244.
Dalziel, S. B. (1993). “Rayleigh-Taylor instability: Experiments with image analysis.” Dyn. Atmos. Oceans, 20, 127–253.
Ernst, G. G. J., Davis, J. P., and Sparks, R. S. J. (1994). “Bifurcation of volcanic plumes in a crosswind.” Bull. Volcanol. (Heidelberg), 56, 159–169.
Ernst, G. G. J., Sparks, R. S. J, Carey, S. N., and Bursik, M. I. (1996). “Sedimentation from turbulent jets and plumes.” J. Geophys. Res., 101(B3), 5575–5589.
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, London, 315–389.
Hayashi, T. (1972). “Bifurcation of bent-over plumes in the ocean.” Coast. Eng. Japan, 15, 153–165.
Jirka, G. H. (2004). “Integral model for turbulent buoyant jets in unbounded stratified flows. Part 1: Single round jet.” Environm’l Fluid Mech., 4, 1–56.
Jirka, G. H. (2006). “Integral model for turbulent buoyant jets in unbounded stratified flows. Part 2: Plane jet dynamics resulting from multiport diffuser jets.” Environm’l Fluid Mech., 6, 43–100.
Lane-Serff, G. F., and Moran, T. J. (2005). “Sedimentation from buoyant jets.” J. Hydraul. Eng., 131(3), 166–174.
Lee, J. H. W., and Neville-Jones, P. (1987). “Sea outfall design—Prediction of initial dilution.” Proc. Instn Civ. Engrs., Part 1, 82, 981–994.
List, E. J. (1982a). “Mechanics of turbulent buoyant jets and plumes.” Turbulent buoyant jets and plumes. W. Rodi, ed., Pergamon Press, Oxford, U.K., 1–68.
List, E. J. (1982b). “Turbulent jets and plumes.” Annu. Rev. Fluid Mech., 14, 189–212.
Sparks, R. S. J., Carey, S. N., and Sigurdsson, H. (1991). “Sedimentation from gravity currents generated by turbulent plumes.” Sedimentology, 38, 839–856.
Wood, I. R., Bell, R. G., and Wilkinsons, D. L. (1993). Ocean disposal of wastewater. Advanced series on ocean engineering—Volume 8, P. L.-F. Liu, ed., World Scientific, Singapore, 48–63.
Zarrebini, M., and Cardoso, S. S. S. (2000). “Patterns of sedimentation from surface currents generated by turbulent plumes.” AIChE J., 46(10), 1947–1956.
Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 134 • Issue 4 • April 2008
Pages: 390 - 402
Copyright
© 2008 ASCE.
History
Received: Jan 3, 2007
Accepted: Jul 26, 2007
Published online: Apr 1, 2008
Published in print: Apr 2008
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.