Improving Flows in Misaligned Culverts

Rick Jaeger; Carolyn Jacobs; Katharina Tondera; Neil W Tindale

doi:10.3390/w11091932

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Improving Flows in Misaligned Culverts

Rick Jaeger, Carolyn Jacobs, Katharina Tondera and Neil W Tindale

Water, Vol.11(9), 1932

2019

DOI: https://doi.org/10.3390/w11091932

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Abstract

culverts

culvert hydraulics

skew

misalignment

inlet design

discharge

This study investigated different approaches to optimize flows in misaligned culverts. Structures aligned with the natural stream are always preferred, as misalignments cause a change of direction at the culvert inlet associated with lower performance and sedimentation and erosion problems. This optimal positioning can cause high financial costs and a flow optimization minimizing the associated problems could be a viable alternative. In this study, we used computational fluid dynamics analysis to evaluate the flow in 44 different scenarios with misalignment angles ranging from 0â—¦ to 90â—¦. It was found that smooth transitions towards the narrowest point in the stream (culvert) were possible for any degree of misalignment resulting in improved, uniform velocity distributions and less turbulence. An experimental setup was able to confirm the possible flow improvements. The proposed approach of flow redirection can lower construction costs and gives planners and designers more flexibility as tailored reinforcement and redesign of the stream embankment can be used as an alternative to costly creek alignments.

Details

Title: Improving Flows in Misaligned Culverts
Authors: Rick Jaeger (Author) - University of the Sunshine Coast - School of Science and Engineering
Carolyn Jacobs (Author) - University of the Sunshine Coast - School of Science and Engineering
Katharina Tondera (Author) - University of the Sunshine Coast - School of Science and Engineering
Neil W Tindale (Author) - University of the Sunshine Coast - School of Science and Engineering
Publication details: Water, Vol.11(9), 1932; 15
Publisher: MDPI AG
Date published: 2019
DOI: 10.3390/w11091932
ISSN: 2073-4441; 2073-4441
Copyright note: Copyright © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Health and Sport Sciences - Legacy; School of Science, Technology and Engineering
Language: English
Record Identifier: 99451498302621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Environmental Sciences; Water Resources