Hostname: page-component-848d4c4894-mwx4w Total loading time: 0 Render date: 2024-06-28T17:46:03.333Z Has data issue: false hasContentIssue false
  • English
  • Français

Plane turbulent jets in a bounded fluid layer

Published online by Cambridge University Press:  26 April 2006

T. Dracos ,
M. Giger  and
G. H. Jirka
T. Dracos
Affiliation:
Swiss Federal Institute of Technology, Zürich. 8093 Zürich. Switzerland
M. Giger
Affiliation:
Swiss Federal Institute of Technology, Zürich. 8093 Zürich. Switzerland
G. H. Jirka
Affiliation:
Cornell University, Ithaca NY 14853, USA
Get access Rights & Permissions [Opens in a new window]

Abstract

An experimental investigation of plane turbulent jets in bounded fluid layers is presented. The development of the jet is regular up to a distance from the orifice of approximately twice the depth of the fluid layer. From there on to a distance of about ten times the depth, the flow is dominated by secondary currents. The velocity distribution over a cross-section of the jet becomes three-dimensional and the jet undergoes a constriction in the midplane and a widening near the bounding surfaces. Beyond a distance of approximately ten times the depth of the bounded fluid layer the secondary currents disappear and the jet starts to meander around its centreplane. Large vortical structures develop with axes perpendicular to the bounding surfaces of the fluid layer. With increasing distance the size of these structures increases by pairing. These features of the jet are associated with the development of quasi two-dimensional turbulence. It is shown that the secondary currents and the meandering do not significantly affect the spreading of the jet. The quasi-two-dimensional turbulence, however, developing in the meandering jet, significantly influences the mixing of entrained fluid.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 241 , August 1992 , pp. 587 - 614
Copyright
© 1992 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Antonia R. A., Browne L. W. B., Rajagopalan, S. & Chambers A. J. 1983 J. Fluid Mech. 134, 49–66.
Bashir, J. & Uberoi M. S. 1975 Phys. Fluids 18, 405–410.
Batchelor G. K. 1969 Phys. Fluids Suppl II, 233–239.
Bevilaqua, P. M. & Lykoudis P. S. 1971 AIAA J. 9 (8), 1657–1659.
Bradbury L. J. S. 1965 J. Fluid Mech. 23, 31–64.
Cantwell B. J. 1981 Ann. Rev. Fluid Mech. 13, 457–515.
Cervantes J. G. 1981 Unsteady Turbulent Shear Flows, IUTAM Symp. Toulouse, pp. 412–424.
Cervantes, J. G. & Goldschmidt V. W. 1983 Trans. ASME I: J. Fluids Engng 103, 119–126.
Corrsin, S. & Kistler A. L. 1954 Natl Adv. Ctee. Aero., Wash, Tech. Note 3133.
Davies A. E., Keffer, J. F. & Baines W. D. 1975 Phys. Fluids 18, 770–775.
Dimotakis, P. E. & Brown G. L. 1976 J. Fluid Mech. 78, 535–560.
Everitt, K. W. & Robins A. G. 1978 J. Fluid Mech. 88, 563–583.
Foss J. F. 1977 Proc. 1st Symp. Turbulent Shear Flows, pp. 11.33–42.
Foss, J. F. & Jones J. B. 1968 J. Basic Engng 241–248.
Giger M. 1987 Doc. thesis ETH-Z, no. 8308.
Giger M., Dracos, T. & Jirka G. H. 1991 J. Hydraul. Res. 29, 615–641.
Goldschmidt, V. W. & Bradshaw P. 1981 ASME Publ. 81-FE-22, p. 7.
Goldschmidt V. W., Moallemi, M. K. & Oler J. W. 1983 Phys. Fluids 26, 428–432.
Goldschmidt, V. W. & Young M. F. 1975 4th Biennial Symp. on Turbulence in Liquids, Rolla, Missouri.
GoUrtler H. 1942 Z. angew Math. Mech. 22, 244–254.
Gutmark, E. & Wygnanski I. 1976 J. Fluid Mech. 73, 465–495.
Heskestad G. 1965 J. Appl. Mech. 721–734.
Holdemann, J. D. & Foss J. F. 1975 Trans ASME I: J. Fluids Engng 111, 342–352.
Hussain A. K. M. F. 1983 Phys. Fluids 26, 2816–2850.
Hussain A. K. M. F. 1986 J. Fluid Mech. 173, 303–356.
Hussain, A. K. M. F. & Zedan M. F. 1978 Phys. Fluids 21, 1100–1112.
Ikeda M. 1977 J. Fluid Mech. 80, 401–421.
Jimenes J. 1983 J. Fluid Mech. 132, 319–336.
Michalke, A. & Schade H. 1963 Ingenieurarchiv 33, 1–23.
Moore, D. W. & Saffman P. G. 1975 J. Fluid Mech. 69, 465–473.
Moum J. N., Kawall, J. G. & Keffer J. F. 1979 Phys. Fluids 22, 1240–1244.
Moum J. N., Kawall, J. G. & Keffer J. F. 1983 Phys. Fluids 26, 2939–2945.
MuUller A. 1980 Proc. Symp. Long Range and Short Range Optical Velocity Measurements, German French res. Inst., Saint Louis, France, R. 117/80, pp. XLII, 1–8.
Mumford J. C. 1982 J. Fluid Mech. 118, 241–268.
Oler, J. W. & Goldschmidt V. W. 1982 J. Fluid Mech. 123, 523–535.
Perkins H. J. 1970 J. Fluid Mech. 44, 721–740.
Ramaprian, B. R. & Chandrasekhara D. V. 1983 IIHR Rep. 257, University of Iowa, Iowa City, Iowa, USA.
Reichardt H. 1942 VDI-Forschungsheft 414.
Sato H. 1960 J. Fluid Mech. 7, 53–80.
Taylor, G. I. 1958 J. Aero. Sci. 25, 464–465.
Thomas, F. O. & Goldschmidt V. W. 1986 J. Fluid Mech. 163, 227–256.
Tollmien W. 1926 Z. angew Math. Mech. 6, 468–478.
Townsend A. A. 1966 J. Fluid Mech. 26, 689–715.
Townsend A. A. 1976 The Structure of Turbulent Shear Flow. Cambridge University Press.
Winant, C. D. & Browand F. K. 1974 J. Fluid Mech. 63, 237–255.