Ransley, Edward J. and Brown, S. A. and Hann, M. and Greaves, D.M. and Windt, Christian and Ringwood, John and Davidson, J. and Schmitt, P. and Yan, S. and Wang, J.X. and Ma, Q and Xie, Z. and Giorgi, G. (2021) Focused wave interactions with floating structures: A blind comparative study. Proceedings of the Institution of Civil Engineers, 14 (6). ISSN 1753-7789

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Abstract

The paper presents results from the Collaborative Computational Project in Wave Structure Interaction (CCP-WSI) Blind Test Series 2. Without prior access to the physical data, participants, with numerical methods ranging from low-fidelity linear models to fully nonlinear Navier-Stokes (NS) solvers, simulate the interaction between focused wave events and two separate, taut-moored, floating structures: a hemispherical-bottomed cylinder and a cylinder with a moonpool. The ‘blind’ numerical predictions for heave, surge, pitch and mooring load, are compared against physical measurements. Dynamic time warping is used to quantify the predictive capability of participating methods. In general, NS solvers and hybrid methods give more accurate predictions; however, heave amplitude is predicted reasonably well by all methods; and a WEC-Sim implementation, with CFD-informed viscous terms, demonstrates comparable predictive capability to even the stronger NS solvers. Large variations in the solutions are observed (even among similar methods), highlighting a need for standardisation in the numerical modelling of WSI problems.

Item Type:	Article
Keywords:	Fluid mechanics; Hydraulics & hydrodynamics; Offshore engineering; Renewable energy;
Academic Unit:	Faculty of Science and Engineering > Electronic Engineering Faculty of Science and Engineering > Research Institutes > Centre for Ocean Energy Research
Item ID:	16268
Depositing User:	Professor John Ringwood
Date Deposited:	06 Jul 2022 13:14
Journal or Publication Title:	Proceedings of the Institution of Civil Engineers
Publisher:	ICE Publishing
Refereed:	Yes
URI:	Publisher
Use Licence:	This item is available under a Creative Commons Attribution Non Commercial Share Alike Licence (CC BY-NC-SA). Details of this licence are available here

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