Xie, Z., Lin, B., Falconer, R.A. et al. (3 more authors) (2022) Large-eddy simulation of turbulent free surface flow over a gravel bed. Journal of Hydraulic Research, 60 (2). pp. 205-219. ISSN 0022-1686
Abstract
In this paper, a large-eddy simulation study of turbulent free surface flow over a natural rough bed is presented. A three-dimensional multiphase flow model is employed to study the roughness effects on the turbulence properties and free surface dynamics. The governing equations have been discretized using the finite volume method, with the Cartesian cut-cell method being implemented to deal with the precise scanned gravel bed topography and the deformable free surface being captured by a volume of fluid method. The predicted mean flow velocities and turbulence statistics have been compared with experimental data. A close agreement has been obtained between the two sets of results, providing confirmation that this complementary approach to experimental investigations gives further insight into the turbulent free surface flow dynamics over rough beds. It is found that small waves are generated on the free surface due to the roughness effect for the relative low submergence case.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2021 International Association for Hydro-Environment Engineering and Research. This is an author-produced version of a paper subsequently published in Journal of Hydraulic Research. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Cartesian cut-cell method; free surface flow; large-eddy simulation; open-channel flow; rough bed; turbulence; two-phase flow model |
Dates: |
|
Institution: | The University of Sheffield |
Academic Units: | The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Civil and Structural Engineering (Sheffield) The University of Sheffield > Faculty of Engineering (Sheffield) > Department of Mechanical Engineering (Sheffield) |
Depositing User: | Symplectic Sheffield |
Date Deposited: | 24 Jun 2021 13:42 |
Last Modified: | 01 Jun 2022 00:38 |
Status: | Published |
Publisher: | Taylor & Francis |
Refereed: | Yes |
Identification Number: | 10.1080/00221686.2021.1908437 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:175556 |