TY - JOUR
T1 - Focused wave interactions with floating structures
T2 - A blind comparative study
AU - Ransley, Edward J.
AU - Brown, Scott A.
AU - Hann, Martyn
AU - Greaves, Deborah M.
AU - Windt, Christian
AU - Ringwood, John
AU - Davidson, Josh
AU - Schmitt, Pal
AU - Yan, Shiqiang
AU - Wang, Junxian X.
AU - Wang, Jinghua H.
AU - Ma, Qingwei
AU - Xie, Zhihua
AU - Giorgi, Giuseppe
AU - Hughes, Jack
AU - Williams, Alison
AU - Masters, Ian
AU - Lin, Zaibin
AU - Chen, Hao
AU - Qian, Ling
AU - Ma, Zhihua
AU - Chen, Qiang
AU - DIng, Haoyu
AU - Zang, Jun
AU - Rij, Jennifer Van
AU - Yu, Yi Hsiang
AU - Li, Zhaobin
AU - Bouscasse, Benjamin
AU - Ducrozet, Guillaume
AU - Bingham, Harry
N1 - Funding Information:
The CCP-WSI Working Group would like to acknowledge the participants of the CCP-WSI Blind Test Series 2 for their contributions as well as the European Wave and Tidal Energy Conference (EWTEC) 2019 organisers for their support. This work is funded by the Engineering and Physical Sciences Research Council (EPSRC) through projects EP/M022382/1, EP/S000747/1 and EP/P026109/1. This research study was authored in part by the National Renewable Energy Laboratory, operated by Alliance for Sustainable Energy, LLC, for the U.S. Department of Energy (DOE) under contract number DE-AC36-08GO28308. Funding provided by U.S. Department of Energy Office of Energy Efficiency and Renewable Energy. The views expressed in this paper do not necessarily represent the views of the DOE or the U.S. Government. The U.S. Government retains and the publisher, by accepting the paper for publication, acknowledges that the U.S. Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this study, or allow others to do so, for U.S. Government purposes. The full physical data set from the CCP-WSI Blind Test Series 2 is available as a long-standing test case for future benchmarking and can be downloaded from CCP-WSI (2020b).
Publisher Copyright:
© 2020 ICE Publishing: All rights reserved.
PY - 2021/3
Y1 - 2021/3
N2 - 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 non-linear 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.
AB - 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 non-linear 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.
UR - http://www.scopus.com/inward/record.url?scp=85102815465&partnerID=8YFLogxK
U2 - 10.1680/jencm.20.00006
DO - 10.1680/jencm.20.00006
M3 - Journal article
AN - SCOPUS:85102815465
SN - 1755-0777
VL - 174
SP - 46
EP - 61
JO - Proceedings of the Institution of Civil Engineers: Engineering and Computational Mechanics
JF - Proceedings of the Institution of Civil Engineers: Engineering and Computational Mechanics
IS - 1
ER -