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Experimental Investigation on Surcharging of Flowing Sewers

Jose Vasconcelos and Steven J. Wright (2007)
Universidade de Brasilia, Brazil
University of Michigan, USA
DOI: https://doi.org/10.14796/JWMM.R227-10
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Abstract

The rapid filling of large diameter stormwater conduits has been associated with a number of operational problems including structural damages and the return of stormwater to grade through vertical inflow or ventilation shafts. There have been limited investigations to date related to the flow mechanisms that lead to these problems. Laboratory investigations have been previously conducted to examine various aspects of this rapid filling problem but generally are conducted to examine a particular aspect of the overall problem. It is generally not feasible to reproduce a complete system at a reasonable scale so any laboratory study necessarily is an idealization of a real system. An outstanding question is to what extent the experiments performed to date are representative of the actual flow conditions in stormwater systems undergoing rapid filling.

This investigation presents a series of exploratory experiments conducted for conditions that were designed to more closely approximate the expected flow in real stormwater systems. In particular, the objective was to examine behavior with inflow from multiple sources. These conditions were generated by creating a surcharging front at an intermediate point in a system with an initial steady state, gradually varied flow. Measurements of pressure and velocity as well as visual observations confirmed the possibility of air entrapment and pressurization, which in turn can pose limitations to the ability of typical numerical models to describe such flows. Experimental results are presented along with a description of observed flow phenomena.

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PAPER INFO

Identification

CHI ref #: R227-10 843
Volume: 15
DOI: https://doi.org/10.14796/JWMM.R227-10
Cite as: JWMM 15: R227-10

Publication History

Received: N/A
First decision: N/A
Accepted: N/A
Published: February 15, 2007

Status

# reviewers: 2
Version: Final published

Copyright

© 2007 CHI.
Some rights reserved.

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Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.

The Journal of Water Management Modeling is an open-access (OA) publication. Open access means that articles and papers are available without barriers to all who could benefit from them. Practically speaking, all published works will be available to a worldwide audience, free, immediately on publication. As such, JWMM can be considered a Diamond, Gratis OA journal.

All papers published in the JWMM are licensed under a Creative Commons Attribution 4.0 International License (CC BY).

JWMM content can be downloaded, printed, copied, distributed, and linked-to, when providing full attribution to both the author/s and JWMM.


AUTHORS

Jose Vasconcelos

Universidade de Brasilia, Brazil
ORCiD:

Steven J. Wright

University of Michigan, Ann Arbor, MI, USA
ORCiD:


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creative commons license   JWMM content is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0 DEED)


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