A blind comparative study of focused wave interactions with floating structures (CCP-WSI Blind Test Series 3)

Edward Ransley; Shiqiang Yan; Scott Brown; Martyn Hann; David Graham; Christian  Windt; Pal  Schmitt; Josh Davidson; John Ringwood; Pierre-Henri Musiedlak; Jinghua Wang; Junxian Wang; Qingwei Ma; Zhihua Xie; Ningbo Zhang; Xing Zheng; Giuseppe Giorgi; Hao Chen; Zaibin Lin; Ling Qian; Zhihua Ma; Wei Bai; Qiang Chen; Jun Zang; Haoyu Ding; Lin Cheng; Jinhai Zheng; Hanbin Gu; Xiwu Gong; Zhenghao Liu; Yuan Zhuang; Decheng Wan; Harry Bingham; Deborah Greaves

doi:10.17736/ijope.2020.jc774

A blind comparative study of focused wave interactions with floating structures (CCP-WSI Blind Test Series 3)

Edward Ransley, Shiqiang Yan, Scott Brown, Martyn Hann, David Graham, Christian Windt, Pal Schmitt, Josh Davidson, John Ringwood, Pierre-Henri Musiedlak, Jinghua Wang, Junxian Wang, Qingwei Ma, Zhihua Xie, Ningbo Zhang, Xing Zheng, Giuseppe Giorgi, Hao Chen, Zaibin Lin, Ling QianZhihua Ma, Wei Bai, Qiang Chen, Jun Zang, Haoyu Ding, Lin Cheng, Jinhai Zheng, Hanbin Gu, Xiwu Gong, Zhenghao Liu, Yuan Zhuang, Decheng Wan, Harry Bingham, Deborah Greaves

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Abstract

Results from the CCP-WSI Blind Test Series 3 are presented. Participants, with numerical methods, ranging from low-fidelity linear models to high-fidelity Navier–Stokes (NS) solvers, simulate the interaction between focused waves and floating structures without prior access to the physical data. The waves are crest-focused NewWaves with various crest heights. Two structures are considered: a hemispherical-bottomed buoy and a truncated cylinder with a moon-pool; both are taut-moored with one linear spring mooring. To assess the predictive capability of each method, numerical results for heave, surge, pitch, and mooring load are compared against corresponding physical data. In general, the NS solvers appear to predict the behaviour of the structures better than the linearised methods, but there is considerable variation in the results (even between similar methods). Recommendations are made for future comparative studies and development of numerical modelling standards.

Original language	English
Pages (from-to)	1-10
Number of pages	10
Journal	International Journal of Offshore and Polar Engineering
Volume	30
Issue number	1
DOIs	https://doi.org/10.17736/ijope.2020.jc774
Publication status	Published - 31 Mar 2020

Bibliographical note

Funding Information:
The CCP-WSI Working Group acknowledges the CCP-WSI Blind Test Series 3 participants for their contributions as well as the ISOPE and IHC for supporting the Blind Test as part of the ISOPE conference series. 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. The full physical data set from the CCP-WSI Blind Test Series 3 is available as a long-standing test case for future benchmarking and can be downloaded from http://www.ccp-wsi.ac.uk/data_ repository/test_cases/test_case_005.

Publisher Copyright:
© by The International Society of Offshore and Polar Engineers.

Keywords

CFD
Code comparison
Cylinder
Heave
Hybrid codes
Linear potential theory
Moonpool
Mooring load
Nonlinear Froude-Krylov
Numerical validation
PIC
Pitch
Surge
Wave energy converter

ASJC Scopus subject areas

Civil and Structural Engineering
Ocean Engineering
Mechanical Engineering

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BT3_main_revised.pdfAccepted author manuscript, 857 KB

Cite this

Ransley, E., Yan, S., Brown, S., Hann, M., Graham, D., Windt, C., Schmitt, P., Davidson, J., Ringwood, J., Musiedlak, P.-H., Wang, J., Wang, J., Ma, Q., Xie, Z., Zhang, N., Zheng, X., Giorgi, G., Chen, H., Lin, Z., ... Greaves, D. (2020). A blind comparative study of focused wave interactions with floating structures (CCP-WSI Blind Test Series 3). International Journal of Offshore and Polar Engineering, 30(1), 1-10. https://doi.org/10.17736/ijope.2020.jc774

Ransley, E, Yan, S, Brown, S, Hann, M, Graham, D, Windt, C, Schmitt, P, Davidson, J, Ringwood, J, Musiedlak, P-H, Wang, J, Wang, J, Ma, Q, Xie, Z, Zhang, N, Zheng, X, Giorgi, G, Chen, H, Lin, Z, Qian, L, Ma, Z, Bai, W, Chen, Q, Zang, J , Ding, H, Cheng, L, Zheng, J, Gu, H, Gong, X, Liu, Z, Zhuang, Y, Wan, D, Bingham, H & Greaves, D 2020, 'A blind comparative study of focused wave interactions with floating structures (CCP-WSI Blind Test Series 3)', International Journal of Offshore and Polar Engineering, vol. 30, no. 1, pp. 1-10. https://doi.org/10.17736/ijope.2020.jc774

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abstract = "Results from the CCP-WSI Blind Test Series 3 are presented. Participants, with numerical methods, ranging from low-fidelity linear models to high-fidelity Navier–Stokes (NS) solvers, simulate the interaction between focused waves and floating structures without prior access to the physical data. The waves are crest-focused NewWaves with various crest heights. Two structures are considered: a hemispherical-bottomed buoy and a truncated cylinder with a moon-pool; both are taut-moored with one linear spring mooring. To assess the predictive capability of each method, numerical results for heave, surge, pitch, and mooring load are compared against corresponding physical data. In general, the NS solvers appear to predict the behaviour of the structures better than the linearised methods, but there is considerable variation in the results (even between similar methods). Recommendations are made for future comparative studies and development of numerical modelling standards.",

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note = "Funding Information: The CCP-WSI Working Group acknowledges the CCP-WSI Blind Test Series 3 participants for their contributions as well as the ISOPE and IHC for supporting the Blind Test as part of the ISOPE conference series. 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. The full physical data set from the CCP-WSI Blind Test Series 3 is available as a long-standing test case for future benchmarking and can be downloaded from http://www.ccp-wsi.ac.uk/data_ repository/test_cases/test_case_005. Publisher Copyright: {\textcopyright} by The International Society of Offshore and Polar Engineers.",

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AU - Graham, David

AU - Windt, Christian

AU - Schmitt, Pal

AU - Davidson, Josh

AU - Ringwood, John

AU - Musiedlak, Pierre-Henri

AU - Wang, Jinghua

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AU - Ma, Qingwei

AU - Xie, Zhihua

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AU - Zheng, Xing

AU - Giorgi, Giuseppe

AU - Chen, Hao

AU - Lin, Zaibin

AU - Qian, Ling

AU - Ma, Zhihua

AU - Bai, Wei

AU - Chen, Qiang

AU - Zang, Jun

AU - Ding, Haoyu

AU - Cheng, Lin

AU - Zheng, Jinhai

AU - Gu, Hanbin

AU - Gong, Xiwu

AU - Liu, Zhenghao

AU - Zhuang, Yuan

AU - Wan, Decheng

AU - Bingham, Harry

AU - Greaves, Deborah

N1 - Funding Information: The CCP-WSI Working Group acknowledges the CCP-WSI Blind Test Series 3 participants for their contributions as well as the ISOPE and IHC for supporting the Blind Test as part of the ISOPE conference series. 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. The full physical data set from the CCP-WSI Blind Test Series 3 is available as a long-standing test case for future benchmarking and can be downloaded from http://www.ccp-wsi.ac.uk/data_ repository/test_cases/test_case_005. Publisher Copyright: © by The International Society of Offshore and Polar Engineers.

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N2 - Results from the CCP-WSI Blind Test Series 3 are presented. Participants, with numerical methods, ranging from low-fidelity linear models to high-fidelity Navier–Stokes (NS) solvers, simulate the interaction between focused waves and floating structures without prior access to the physical data. The waves are crest-focused NewWaves with various crest heights. Two structures are considered: a hemispherical-bottomed buoy and a truncated cylinder with a moon-pool; both are taut-moored with one linear spring mooring. To assess the predictive capability of each method, numerical results for heave, surge, pitch, and mooring load are compared against corresponding physical data. In general, the NS solvers appear to predict the behaviour of the structures better than the linearised methods, but there is considerable variation in the results (even between similar methods). Recommendations are made for future comparative studies and development of numerical modelling standards.

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KW - Numerical validation

KW - PIC

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KW - Wave energy converter

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A blind comparative study of focused wave interactions with floating structures (CCP-WSI Blind Test Series 3)

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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