Oblique and Vertical Jet Dispersion in Channels
Publication: Journal of Hydraulic Engineering
Volume 123, Issue 5
Abstract
The generalized laws of degradation and spreading of the boundaries of a submerged round jet discharging under oblique and vertical impingements into a channel have been investigated and derived. The laser Doppler anemometry (LDA) technique was adapted for measurement of mean velocities without any interference in the flow, and was utilized for the investigation of the complex three-dimensional circulating flow that was experienced in the channel. In the experiments, the inclination of the jet was varied from 45° to 90° to the bed of the channel, while differing ratios of channel width and depth to jet diameter were studied for various Froude numbers of the flow. The experimental results have been analyzed and compared with Glauret's theory for a radial wall jet as a first approximation neglecting gravity forces when small compared with turbulent forces. The research provides practical information for determining an efficient form of stilling basin for high velocity discharge from pipe outlets.
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References
1.
Abramovich, G. N. (1963). The theory of turbulent jets. MIT Press, Cambridge, Mass.
2.
Bakke, P.(1957). “An experimental investigation of a wall jet.”J. Fluid Mech., Cambridge, England, 2, 212–216.
3.
Beltaos, S.(1976). “Oblique impingement of circular turbulent jets.”J. Hydr. Res., London, England, 14(1), 17–36.
4.
Davanipour, T., and Sami, S.(1977). “Short jet impingement.”J. Hydr. Div., ASCE, 103(5), 557–567.
5.
Glauret, M. B.(1956). “The wall jet.”J. Fluid Mech., Cambridge, England, 1, 625–636.
6.
Naib, S. K. A.(1969). “Spreading and development of the parallel wall jet.”Aircraft Engrg., London, England, 12, 30–33.
7.
Naib, S. K. A.(1974). “The deflection of a submerged round jet to increase lateral spreading.”La Houille Blanche, Grenoble, France, 29(6), 455–461.
8.
Poreh, M., and Cermak, J. E. (1959). “Flow characteristics of a circular submerged jet impinging normally on a smooth boundary.”Proc., 6th Midwestern Conf. on Fluid Mech., Univ. of Texas, Austin, Tex., 198–212.
9.
Rajaratnam, N. (1976). Development in water science; turbulent jets. Elsevier Science Publishing Co., Inc., London, England, 226–239.
10.
Rouse, H. (1965). Advanced mechanics of fluids. John Wiley & Sons, Inc., New York, N.Y.
11.
Sanders, J. E. (1989). “Jet dispersion in channels,” PhD thesis, Univ. of East London, Dagenham, England.
12.
Schlichting, H. (1979). Boundary layer theory. McGraw-Hill Book Co., New York, N.Y.
13.
Yakovlevskii, O. V., and Krasheninnicov, S. Y.(1966). “Spreading of a turbulent jet impinging on a flat surface.”Fluid Dyn., Cambridge, England, 1(4), 136–139.
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Copyright © 1997 American Society of Civil Engineers.
History
Published online: May 1, 1997
Published in print: May 1997
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