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Venturi Flume

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Abstract

Due to solid matter contained in sewage, the discharge in sewer technology is usually measured with a Venturi flume. This flume corresponds to a locally constricted channel normally without a bottom inset to force a transition between sub- and supercritical flows. Then, deposition of material in the approach flow channel can be often prevented, and this design is superior to a weir structure.

In this chapter, flumes of long and short structural length are presented. Based on an analysis of advantages and disadvantages, three flume types are retained and recommended for design. These are characterized by simplicity, economy and hydraulic performance. A fourth type of flume is mentioned, because of its large discharge range for a limited approach flow depth.

The design equation of a Venturi flume depends significantly on the effects of velocity of approach, constriction geometry and streamline curvature. For sufficiently large structures, effects of scale may be suppressed. A comparison with the discharge equations indicates a reasonable accuracy, and Venturi flumes of standard geometry may be designed with a rational approach.

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Authors and Affiliations

  1. VAW, ETH Zurich, CH-8092, Zürich, Switzerland

    Dr. Willi H. Hager

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  1. Dr. Willi H. Hager
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Correspondence to Willi H. Hager .

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Hager, W.H. (2010). Venturi Flume. In: Wastewater Hydraulics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-11383-3_12

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  • DOI: https://doi.org/10.1007/978-3-642-11383-3_12

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-11382-6

  • Online ISBN: 978-3-642-11383-3

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