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 I. Graham, Christian Windt, Pál Schmitt, Josh Davidson, John V. 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 B. Bingham, Deborah Greaves
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 floatingstructures 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 topredict 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 numericalmodelling standards.