Research Article
Apr 1972
Hydraulic Control for Flow Distribution
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VIEW THE REPLYPublication: Journal of the Sanitary Engineering Division
Volume 98, Issue 2
Abstract
Hydraulic control devices are extensively used in connection with open dispersion channels to achieve uniform flow distribution in treatment plant design. A general equation applicable to all types of control devices has been developed for design uses. Study results indicate that, for plants with no appreciable flow variations, orifices and ports need much less control head than other types of devices to obtain the same control efficiency. Rectangular weirs and V-notches give equal or even better control efficiency at flow rates lower than the design flow. Orifices and ports, on the other hand, have lower control efficiency at low flow rates. This can be improved by providing appropriate initial flow depths in the channel. If plant operation requires to maintain certain minimum velocity in the dispersion channel, rectangular weirs with no initial flow depth in the channel represent the best choice.
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Information
Published In
Journal of the Sanitary Engineering Division
Volume 98 • Issue 2 • April 1972
Pages: 275 - 285
Copyright
© 1972 American Society of Civil Engineers.
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Published in print: Apr 1972
Published online: Feb 12, 2021
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Authors
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Kuan M. Yao, M.ASCE
Sr. Specialist; Camp, Dresser & McKee, Inc., Boston, MA
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