Using CFD modelling to study hydraulic flow over labyrinth weirs Idrees, AK, Al-Ameri, Riyadh and Das, Subrat 2021, Using CFD modelling to study hydraulic flow over labyrinth weirs, Water Supply, pp. 1-18, doi: 10.2166/ws.2021.424. Attached Files Name Description MIMEType Size Downloads Title Using CFD modelling to study hydraulic flow over labyrinth weirs Author(s) Idrees, AK Al-Ameri, Riyadh orcid.org/0000-0003-1881-1787 Das, Subrat orcid.org/0000-0003-0390-5625 Journal name Water Supply Start page 1 End page 18 Total pages 18 Publisher I W A Publishing Place of publication London, Eng. Publication date 2021-12-07 ISSN 1606-9749 1607-0798 Keyword(s) aeration compound labyrinth weir computational fluid dynamics (CFD) Engineering Engineering, Environmental Environmental Sciences Environmental Sciences & Ecology Life Sciences & Biomedicine Physical Sciences pressure Science & Technology streamline Technology velocity Water Resources Summary The compound labyrinth weir is a new type of labyrinth weir that is considered a good applicable choice for increasing the capacity of discharge. The flow over a compound labyrinth weir is a complex problem because the flow behavior is three-dimensional. The present study aims to simulate the flow over the compound labyrinth weir into the critical regions that cannot be observed when using an experimental test. The computational fluid dynamics (CFD) programme was utilised to implement a sensitive analysis for this purpose and under different flow conditions. The MAPE and RMSE indices were utilised to verify the CFD results with experimental work. The statistical indices of the maximum error ME, RMSE and MAPE were 4.7%, 0.033 and 3.9 respectively. Therefore, the findings showed that there is a good matching between the experimental and CFD results. The CFD results demonstrated that the hydraulics behaviour of the compound labyrinth weir was similar to the oblique and linear weirs in high discharges. The results also confirmed that air cavities and bubbles existed behind the nappe flow in addition to the negative pressure that may occur beneath the nappe when the flow is aerated. Furthermore, the flow was divided into two parts and most streamlines were concentrated over the notches. Moreover, the flow velocity passing through the notches was greater than the flow velocity over the high crest of the compound labyrinth weir. Language eng DOI 10.2166/ws.2021.424 Field of Research 0904 Chemical Engineering 0905 Civil Engineering 0907 Environmental Engineering HERDC Research category C1 Refereed article in a scholarly journal Free to Read? Yes Persistent URL http://hdl.handle.net/10536/DRO/DU:30160154 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Engineering Open Access Collection Related Links Link Description Connect to Elements publication management system Go to link with your DU access privileges   Link to full-text (open access)     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au. Versions Version Filter Type Sun, 12 Dec 2021, 10:41:37 EST Tue, 14 Dec 2021, 09:20:48 EST Tue, 14 Dec 2021, 09:25:34 EST Tue, 14 Dec 2021, 10:05:18 EST Sat, 18 Dec 2021, 01:31:07 EST Wed, 12 Jan 2022, 05:03:23 EST Thu, 03 Feb 2022, 13:13:23 EST Thu, 03 Feb 2022, 13:14:23 EST Thu, 03 Feb 2022, 13:52:09 EST Thu, 03 Feb 2022, 13:56:52 EST Thu, 03 Feb 2022, 14:08:59 EST Wed, 30 Mar 2022, 14:15:38 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 23 Abstract Views, 1 File Downloads  -  Detailed Statistics Created: Sun, 12 Dec 2021, 10:41:37 EST