Xie, Z;
Stoesser, T;
Yan, S;
Ma, Q;
Lin, P;
(2020)
A Cartesian cut-cell based multiphase flow model for large-eddy simulation of three-dimensional wave-structure interaction.
Computers & Fluids
, 213
, Article 104747. 10.1016/j.compfluid.2020.104747.
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Abstract
A multiphase flow numerical approach for performing large-eddy simulations of three-dimensional (3D) wave-structure interaction is presented in this study. The approach combines a volume-of-fluid method to capture the air-water interface and a Cartesian cut-cell method to deal with complex geometries. The filtered Navier–Stokes equations are discretised by the finite volume method with the PISO algorithm for velocity-pressure coupling and the dynamic Smagorinsky subgrid-scale model is used to compute the unresolved (subgrid) scales of turbulence. The versatility and robustness of the presented numerical approach are illustrated by applying it to solve various three-dimensional wave-structure interaction problems featuring complex geometries, such as a 3D travelling wave in a closed channel, a 3D solitary wave interacting with a vertical circular cylinder, a 3D solitary wave interacting with a horizontal thin plate, and a 3D focusing wave impacting on an FPSO-like structure. For all cases, convincing agreement between the numerical predictions and the corresponding experimental data and/or analytical or numerical solutions is obtained. In addition, for all cases, water surface profiles and turbulent vortical structures are presented and discussed.
| Type: | Article |
|---|---|
| Title: | A Cartesian cut-cell based multiphase flow model for large-eddy simulation of three-dimensional wave-structure interaction |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.compfluid.2020.104747 |
| Publisher version: | http://dx.doi.org/10.1016/j.compfluid.2020.104747 |
| Language: | English |
| Additional information: | © 2020 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/) |
| Keywords: | Two-phase flow model, Wave-structure interaction, Cartesian cut-cell method, Finite volume method, Large-eddy simulation, Volume-of-fluid method |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10112552 |
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