Research Article
May 1974
Variation of Regime Coefficients in Pakistan Canals
Publication: Journal of the Waterways, Harbors and Coastal Engineering Division
Volume 100, Issue 2
Abstract
The three degrees-of-freedom in a straight alluvial canal can be represented by Froude number F; width-depth ratios, and energy gradient S. They also can be represented by the coefficients in regime equations. The physical interpretation of these regime coefficients is investigated and thus the basic structure of Lacey's regime equations is explained. The Canal and Headworks Data Observation Program (CHOP) data on Pakistan Canals are analyzed in the framework of regime theory and it is shown that: (1) the width of a stable channel section is related to the maximum operational discharge with α3 α3 = 2.87; and (2) the regime coefficients, α1 and α4, are related as the bed material load and resistance functions of sand-bed channels. It is concluded that in their day to day operation, the sand-bed alluvial canals have only one degree-of-freedom that is related to their bed material load.
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Published In
Journal of the Waterways, Harbors and Coastal Engineering Division
Volume 100 • Issue 2 • May 1974
Pages: 85 - 104
Copyright
© 1974 American Society of Civil Engineers.
History
Published in print: May 1974
Published online: Feb 12, 2021
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Khalid Mahmood, M.ASCE
Assist. Prof., Civ. Engrg. Dept., Colorado State Umv., Fort Collms, Colo.
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