Performance of Tee Diffusers in Shallow Water with Crossflow
Publication: Journal of Hydraulic Engineering
Volume 127, Issue 1
Abstract
The dilution and plume trajectory of the tee diffuser has been investigated via the collection of experimental data for a wide range of ambient current conditions. A new dilution equation in which the stagnation effect between ambient current and diffuser discharge is assumed to be a function of the ratio of the ambient momentum to the discharge momentum, mr, is proposed modifying the conventional theory of Adams that significantly underpredicts mixing for large mr. A simple equation for the plume trajectory including the dependency of the momentum ratio is also derived by dimensional analysis. Experimental results on the near field dilution show that when mr < 1 the dilution decreases with mr, whereas when mr > 1 it increases with increasing mr, and approaches the stagnant water dilution for very large values of mr. The equation is applied to aid the preliminary design of a diffuser discharging heated water from a power station in Korea.
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Information & Authors
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Published In
Journal of Hydraulic Engineering
Volume 127 • Issue 1 • January 2001
Pages: 53 - 61
History
Received: Apr 24, 2000
Published online: Jan 1, 2001
Published in print: Jan 2001
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