Mixing Region of Circular Turbulent Wall Jets in Cross Flows
Publication: Journal of Hydraulic Engineering
Volume 121, Issue 10
Abstract
This paper presents the results of a laboratory study on the dilution produced in the mixing region by a circular turbulent wall (bed) jet of diameter d, discharged at right angles into a cross flow of depth D, with jet velocities varied from 2 to 12 times the mean velocity of the cross flow. For a depth-to-diameter ratio D /d of 20, minimum dilutions of about 100 were obtained in the mixing region, which extended through the momentum dominated near and far fields, to the passive plume region. A correlation has been developed to predict the minimum dilution in the mixing region in terms of a transformed distance αx/d. Concentration profiles in the vertical plane along the axis of the deflected jet as well as in the transverse plane of maximum concentration were found to be similar. Some observations have also been made for D /d equal to 10 and 5. The results of this study can be used for designing efficient outfalls in shallow rivers.
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References
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Information & Authors
Information
Published In
Journal of Hydraulic Engineering
Volume 121 • Issue 10 • October 1995
Pages: 694 - 698
Copyright
Copyright © 1995 American Society of Civil Engineers.
History
Published online: Oct 1, 1995
Published in print: Oct 1995
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