Martins, R., Rubinato, M., Kesserwani, G. et al. (3 more authors) (2018) On the characteristics of velocities fields on the vicinity of manhole inlet grates during flood events. Water Resources Research, 54 (9). pp. 6408-6422. ISSN 0043-1397
Abstract
The accurate characterisation of flow from urban surfaces to sewer/stormwater systems is important for urban drainage design and flood modelling/risk identification. However, the geometrical complexity and large variety of drainage structures (linking elements) available makes model calibration and verification difficult. In this study an extensive comparison between experimentally measured and numerically modelled flow characteristics in the vicinity of ten different designs of manhole grate was performed under drainage flow in sub‐critical conditions. Using a 2D surface PIV (sPIV) system the work presents the first detailed characterisation of velocity fields around these linking elements. In addition, it provides the first detailed verification of the ability of a 2D numerical model to describe both velocity fields and drainage flows.
The overall comparison shows a close relationship between numerical and the experimental results with some higher inflows in the experimental results as a consequence of a localised transition from weir to orifice condition near the void areas of the grates. It was also noted that velocity differences decreased further from the manhole, due mainly to the more directional flow. Overall the work demonstrates the potential for further use of 2D numerical models to describe flow conditions at linking elements, either directly within modelling simulations or indirectly via the characterisation of energy loss coefficients.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2018 American Geophysical Union. This is an author produced version of a paper subsequently published in Water Resources Research. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | urban drainage inlet flows; experimental versus numerical comparison; flood modeling; manhole grate geometry |
Dates: |
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Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) |
Funding Information: | Funder Grant number ENGINEERING AND PHYSICAL SCIENCE RESEARCH COUNCIL (EPSRC) EP/K010405/1 |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 10 Sep 2018 11:51 |
Last Modified: | 19 Apr 2024 09:36 |
Status: | Published |
Publisher: | American Geophysical Union |
Refereed: | Yes |
Identification Number: | 10.1029/2018WR022782 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:135494 |