Research Article
May 1980
Ocean Outfall Dilution: Effects of Currents
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VIEW THE REPLYPublication: Journal of the Hydraulics Division
Volume 106, Issue 5
Abstract
Analyses of data for the City of San Francisco, Calif., obtained from continuously recording current meters showed the most energetic current component, the first principal component, to be strongly tidal and to lie along an axis pointing approximately to the Golden Gate. The difusers were placed perpendicular to this component, where possible, to obtain the maximum beneficial effect of the currents on dilution. A mathematical model was applied to the proposed diffusers to predict dilution in the presence of currents, using measured oceanic conditions. Results show the dilution and wastefield rise height to vary widely due to the varying oceanic and discharge conditions. The median dilutions are found to depend on season and to be increased substantially over those predicted by neglecting the dynamic effect of currents on dilution. The effect of diffuser orientation was also investigated with the model, and it was found that suitable orientation to the prevailing currents can significantly affect the initial dilution.
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Published In
Journal of the Hydraulics Division
Volume 106 • Issue 5 • May 1980
Pages: 769 - 782
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© 1980 American Society of Civil Engineers.
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Published in print: May 1980
Published online: Feb 3, 2021
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Authors
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Philip J. W. Roberts, A.M.ASCE
Asst. Prof. of Civ. Engrg., Georgia Inst. of Tech., Atlanta, Ga.
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ASCE Library Cards let you download journal articles, proceedings papers, and available book chapters across the entire ASCE Library platform. ASCE Library Cards remain active for 24 months or until all downloads are used. Note: This content will be debited as one download at time of checkout.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.