Yes / This paper aims to investigate the mean velocities and turbulence characteristics, which include Reynolds shear
stresses (RSS) and turbulent intensities, in order to study temporal and spatial flow patterns around a complex
three square-piers group. Measurements have been performed by acoustic Doppler velocimeter (ADV) to identify
turbulence flow structures alteration and vortices formation in longitudinal, transverse, and vertical directions.
In total, 164 locations around the bridge piers have been measured, while each location consists of no lesser than
15 vertical depth ADV data point measurements. To investigate the flow turbulence, critical locations have been
observed from high vortex-influenced regions. The impacted mean velocity profiles have been compared to that
at the unaffected region to study the flow alteration caused by piers group. The result reveals that the log-law
layer near wall has been enhanced by the installation of pier. Furthermore, as identified from the most critical locations of turbulent structures across different measurement rows, the accelerated flow will result in lower
observed turbulent structures. Although flow after each pier has been influenced by strong reversal velocities,
vortices have managed to form at near wake. Analysis has been divided into inner and outer flow regions (IFR
and OFR) based on flow depth to enhance the understanding of how bridge piers contribute to the development
of flow turbulence. / Shuyan Zang acknowledges the support of Chinese National Natural Science Foundation (Grant No. 22308222) to this study.
| Identifer | oai:union.ndltd.org:BRADFORD/oai:bradscholars.brad.ac.uk:10454/20071 |
| Date | 12 October 2024 |
| Creators | Ikani, N., Pu, Jaan H., Zang, S., Al-Qadami, E.H.H., Razi, A. |
| Publisher | Elsevier |
| Source Sets | Bradford Scholars |
| Language | English, English |
| Detected Language | English |
| Type | Article, Published version |
| Rights | © 2023 The Author(s). Published by Elsevier Inc. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/)., CC-BY |
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