Scour below a high vertical drop

Dey, Subhasish ; Raikar, Rajkumar V. (2007) Scour below a high vertical drop Journal of Hydraulic Engineering, 133 (5). pp. 564-568. ISSN 0733-9429

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Experimental results on scour below a high vertical drop (drop height/critical depth >1) in uniform sands and gravels are presented. The experimental results are used to describe the effects of important parameters, identified from the dimensional analysis, on equilibrium scour depth. The important observations are that the equilibrium scour depth increases with increase in densimetric Froude number, whereas the scour depth decreases with increase in sediment size and tailwater depth. The time scale of scour depth that follows an exponential law is determined. The nondimensional time scale decreases with increase in densimetric Froude number.

Item Type:Article
Source:Copyright of this article belongs to American Society of Civil Engineers.
Keywords:Open Channel Flow; Nonuniform Flow; Steady Flow; Drop Structures; Erosion; Scour; Sediment Transport
ID Code:79032
Deposited On:23 Jan 2012 15:02
Last Modified:23 Jan 2012 15:02

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