Generalized culvert design diagram
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Date
1998-09
Publication Type
Journal Article
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yes
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Abstract
The features of culvert flow in a basic arrangement are highlighted. Four fundamental flow types may be identified, namely critical flow, uniform flow, gated flow, and pressurized flow. A generalized design diagram is presented for the circular barrel that gives the possible transitions between various flow types. Further, the lengths of free surface flows with a central pressurized flow portion are determined as a function of the pipe Froude number. Photographs of model tests illustrate the complex flow patterns that may occur even in a simple culvert arrangement. Of particular relevance are choking conditions and features of two-phase flow in a culvert. The effects of friction coefficient, bottom slope, relative pipe length, and upstream head are detailed for free culvert outlet conditions.
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published
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Journal / series
Volume
124 (5)
Pages / Article No.
271 - 274
Publisher
American Society of Civil Engineers
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Organisational unit
03820 - Boes, Robert / Boes, Robert