Christou, Aristos, Stoesser, Thorsten ![]() ![]() |
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Abstract
A three-dimensional numerical wave tank (NWT) based on the large eddy simulation (LES) code Hydro3D is introduced. The open-source code employs the level set and immersed boundary methods in order to compute the water surface and to account for solid structures in the numerical tank, respectively. The spatially-filtered Navier–Stokes (N-S) equations are solved on a staggered Cartesian grid using the finite difference method while time advancement is achieved using the fractional-step method based on a three-step Runge–Kutta scheme. Velocities and pressure are coupled with the Poisson equation and its solution is obtained via a multi-grid technique. The NWT is then applied to predict the progression and damping of monochromatic waves and the interaction of non-linear waves with various submerged obstacles. The accuracy of the NWT is confirmed by comparing numerical results with data of previously reported laboratory experiments. Comparisons of numerically predicted and measured water-level elevations, local velocity and pressure fields and forces acting on structures under the influence of incoming waves agree well and confirm that the LES-based NWT is able to predict accurately three-dimensional wave-structure interaction.
Item Type: | Article |
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Date Type: | Publication |
Status: | Published |
Schools: | Advanced Research Computing @ Cardiff (ARCCA) Engineering |
Publisher: | Elsevier |
ISSN: | 0045-7930 |
Date of First Compliant Deposit: | 25 November 2021 |
Date of Acceptance: | 23 September 2021 |
Last Modified: | 03 Aug 2024 22:11 |
URI: | https://orca.cardiff.ac.uk/id/eprint/144774 |
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