Browsing Fakultet for ingeniørvitenskap (IV) by Author "Gaidai, Oleg"
Now showing items 1-7 of 7
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Characterisation of extreme load responses of a 10-MW floating semi-submersible type wind turbine
Xing, Yihan; Wang, Shuaishuai; Karuvathil, Anuraj; Balakrishna, Rajiv; Gaidai, Oleg (Peer reviewed; Journal article, 2023)The global average size of offshore wind turbines has increased steadily from 1.5 MW to 6 MW from 2000 to 2020. With this backdrop, the research community has recently looked at huge 10–15 MW class floating offshore wind ... -
A comparison study of power performance and extreme load effects of large 10-MW offshore wind turbines
Wang, Shuaishuai; Xing, Yihan; Karuvathil, Anuraj; Gaidai, Oleg (Peer reviewed; Journal article, 2023)The utilisation of offshore wind turbines has rapidly increased in the last decade, which has resulted in a steady increase in wind turbine sizes. The global average offshore wind turbine size has increased from 1.5 MW to ... -
Estimation of Extreme Values by the Average Conditional Exceedance Rate Method
Næss, Arvid; Gaidai, Oleg; Karpa, Oleh Ihorovych (Journal article; Peer reviewed, 2013)This paper details a method for extreme value prediction on the basis of a sampled time series. The method is specifically designed to account for statistical dependence between the sampled data points in a precise manner. ... -
Improving extreme anchor tension prediction of a 10-MW floating semi-submersible type wind turbine, using highly correlated surge motion record
Gaidai, Oleg; Xing, Yihan; Wang, Fang; Wang, Shuaishuai; Yan, Ping; Næss, Arvid (Peer reviewed; Journal article, 2022)Extreme value prediction of the load-effect responses of complex offshore structures such as the floating wind turbine (FWT) is crucial in ultimate limit state (ULS) design. This paper considers two cases to understand the ... -
A novel design approach for estimation of extreme load responses of a 10-MW floating semi-submersible type floating wind turbine
Balakrishna, Rajiv; Gaidai, Oleg; Wang, Fang; Xing, Yihan; Wang, Shuaishuai (Journal article; Peer reviewed, 2022)Offshore structures are constructed to withstand extreme wind and wave-induced loads, so studying these extreme loads is vital as it allows offshore structures, e.g., wind turbines, to be designed and operated with minimal ... -
Piezoelectric energy harvesting from vortex-induced vibration of a circular cylinder: Effect of Reynolds number
Zhang, Mingjie; Zhang, Chengyun; Abdelkefi, Abdessattar; Yu, Haiyan; Gaidai, Oleg; Qin, Xiang; Zhu, Hongjun; Wang, Junlei (Peer reviewed; Journal article, 2021)This study investigates the effects of the Reynolds number on the piezoelectric energy harvesting from vortex-induced vibrations (VIV) of a circular cylinder. The VIV-based piezoelectric energy harvester is simulated by a ... -
Predefined angle of attack and corner shape effects on the effectiveness of square-shaped galloping energy harvesters
Zhang, Mingjie; Abdelkefi, Abdessattar; Yu, Haiyan; Ying, Xuyong; Gaidai, Oleg; Wang, Junlei (Peer reviewed; Journal article, 2021)Energy harvesting based on transverse galloping of a square cylinder has been widely studied while the effects of angle of attack and corner shape remain unclear. This study proposes to explore the impacts of these two ...