Blar i NTNU Open på forfatter "Gaidai, Oleg"
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Bivariate statistics of wind farm support vessel motions while docking
Gaidai, Oleg; Xu, Xiaosen; Næss, Arvid; Cheng, Yong; Ye, Renchuan; Wang, Junlei (Peer reviewed; Journal article, 2020)Robust prediction of extreme motions during wind farm support vessel (WFSV) operation is an important safety concern. In particular, it is important to study safety of operation in random sea conditions during WFSV docking ... -
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. ... -
Extreme loads analysis of a site-specific semi-submersible type wind turbine
Xu, Xiaosen; Gaidai, Oleg; Næss, Arvid; Sahoo, Prasanta (Peer reviewed; Journal article, 2020)As a vital key part of the modern offshore wind energy industry, floating offshore wind turbines (FOWT) are built to generate green renewable energy. Robust prediction of extreme loads during FOWT operation is an important ... -
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 ... -
Rotating shaft's non-linear response statistics under biaxial random excitation, by path integration
Gaidai, Oleg; Dimentberg, Michael; Næss, Arvid (Journal article; Peer reviewed, 2018)The response of rotating shaft to random excitations is of practical concern for various rotor type engine design applications, with high level of potential external forces of stochastic nature. Authors have studied ... -
Statistics of extreme hydroelastic response for large ships
Gaidai, Oleg; Storhaug, Gaute; Næss, Arvid (Journal article; Peer reviewed, 2018)For the safety of crew, ship and cargo, it is essential to assess all aspects of the wave loading to ensure that ships are designed to endure extreme events. This paper describes a practical method for prediction of extreme ...