Numerical and Physical Modeling to Improve Discharge Rates in Open Channel Infrastructures

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

doi:10.3390/w11071414

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Numerical and Physical Modeling to Improve Discharge Rates in Open Channel Infrastructures

Journal article

Open access

Peer reviewed

Numerical and Physical Modeling to Improve Discharge Rates in Open Channel Infrastructures

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

Water, Vol.11(7), 1414

2019

DOI: https://doi.org/10.3390/w11071414

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Abstract

culvert

culvert design

culvert hydraulics

culvert retrofitting

discharge capacity

inlet optimization

ANSYS Fluent

This paper presents the findings of a study into how different inlet designs for stormwater culverts increase the discharge rate. The objective of the study was to develop improved inlet designs that could be retro-fitted to existing stormwater culvert structures in order to increase discharge capacity and allow for changing rainfall patterns and severe weather events that are expected as a consequence of climate change. Three different chamfer angles and a rounded corner were simulated with the software ANSYS Fluent, each of the shapes tested in five different sizes. Rounded and 45â—¦ chamfers at the inlet edge performed best, significantly increasing the flow rate, though the size of the configurations was a critical factor. Inlet angles of 30â—¦ and 60â—¦ caused greater turbulence in the simulations than did 45â—¦ and the rounded corner. The best performing shape of the inlet, the rounded corner, was tested in an experimental flume. The flume flow experiment showed that the optimal inlet configuration, a rounded inlet (radius = 1/5 culvert width) improved the flow rate by up to 20% under submerged inlet control conditions.

Details

Title: Numerical and Physical Modeling to Improve Discharge Rates in Open Channel Infrastructures
Authors: Rick Jaeger (Author) - University of the Sunshine Coast - School of Science and Engineering
Katharina Tondera (Author) - Department of Energy Systems and Environment, France
Carolyn Jacobs (Author) - University of the Sunshine Coast - School of Science and Engineering
Mark Porter (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(7), 1414; 16
Publisher: MDPI AG
Date published: 2019
DOI: 10.3390/w11071414
ISSN: 2073-4441
Copyright note: Copyright © 2019 The Author. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC 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: 99451452402621
Output Type: Journal article

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