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You are here : eLibrary : IAHR World Congress Proceedings : 35th IAHR Congress - Chengdu (2013) : THEME 3 - WATER ENGINEERING AND CIVILIZATION : Prediction of Dynamic Forces on Broad Crested Weir within a Large Circular Open Channel
Prediction of Dynamic Forces on Broad Crested Weir within a Large Circular Open Channel
Author : John Demetriou, Eugene Retsinis
In this experimental investigation some geometrical characteristics and the prediction of the dynamic forces, from the water flow over a horizontal broad crested weir within a large circular (D) open channel, are presented, analyzed and discussed. The diameter D=const., while the lengths L of the weir and the upstream hydraulic heads h are varying. The onedimensional equations are presented and the dimensionless force, K , from the weir and horizontal boundary shear stresses, are indirectly calculated ? N based on laboratory experiments. The dimensionless critical flow depths over the weir?s crest are related to dimensionless distances (L ) from the weir?s brink, while the dimensionless downstream depth is also c investigated and two relative equations are proposed. K is related to the ratios h\L and L\D and a N pertinent equation is provided. Finally, an arithmetic example is given, in order to help the hydraulic engineer when designing pertinent hydraulic structures.
File Size : 170,804 bytes
File Type : Adobe Acrobat Document
Chapter : IAHR World Congress Proceedings
Category : 35th IAHR Congress - Chengdu (2013)
Date Published : 18/07/2016
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