Blar i NTNU Open på forfatter "Lie, Halvor"
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A Time-Domain Method for Hydroelastic Analysis of Floating Bridges in Inhomogeneous Waves
Fu, Shixiao; Wei, Wei; Ou, Shaowu; Moan, Torgeir; Deng, Shi; Lie, Halvor (Chapter; Peer reviewed, 2017)Based on the three dimensional potential theory and finite element method (FEM), this paper presented a method for time-domain hydroelastic analysis of a floating bridge in inhomogeneous waves. A floating bridge in both ... -
Data-Driven Prediction of Vortex-Induced Vibration Response of Marine Risers Subjected to Three-Dimensional Current
Riemer-Sørensen, Signe; Wu, Jie; Lie, Halvor; Sævik, Svein; Kim, Sangwoo (Chapter, 2019)Slender marine structures such as deep-water marine risers are subjected to currents and will normally experience Vortex Induced Vibrations (VIV), which can cause fast accumulation of fatigue damage. The ocean current is ... -
Dominant parameters for vortex-induced vibration of a steel catenary riser under vessel motion
Wang, Jungao; Fu, Shixiao; Larsen, Carl Martin; Baarholm, Rolf; Wu, Jie; Lie, Halvor (Journal article; Peer reviewed, 2017)Recent research has confirmed a new type of vortex-induced vibration (VIV) in steel catenary risers (SCRs), purely caused by vessel motion. Vessel motion-induced VIV occurs because the SCR is exposed to the equivalent ... -
Hydrodynamic modelling and estimating response of a glacial ice near a drilling rig
Ommani, Babak; Berthelsen, Petter Andreas; Lie, Halvor; Aksnes, Vegard Øgård; Løland, Geir (Chapter, 2019)Impact scenarios involving a typical drilling rig and glacial ice are studied. The goal is to better identify the important physical effects in modelling the dynamics of glacial ice in presence of waves and a floating ... -
Improved VIV Response Prediction Using Adaptive Parameters and Data Clustering
Wu, Jie; Yin, Decao; Lie, Halvor; Riemer-Sørensen, Signe; Sævik, Svein; Triantafyllou, Michael (Peer reviewed; Journal article, 2020)Slender marine structures such as deep-water riser systems are continuously exposed to currents, leading to vortex-induced vibrations (VIV) of the structure. This may result in amplified drag loads and fast accumulation ... -
On the significance of the higher-order stress in riser vortex-induced vibrations responses
Wu, Jie; Yin, Decao; Lie, Halvor; Larsen, Carl Martin; Baarholm, Rolf Jarle; Liapis, Stergios (Journal article; Peer reviewed, 2019)Vortex-induced vibrations (VIV) can lead to fast accumulation of fatigue damage and increased drag loads for slender marine structures. VIV responses mainly occur at the vortex shedding frequency, while higher harmonics ... -
Teknisk/økonomisk analyse av roterende kompensatorer: Et bidrag til effektiv utnyttelse av det norske sentralnettet
Lie, Halvor (Master thesis, 2008)Det er perioder behov for økt robusthet i sentralnettet. Kombinasjonen lav last med høy import gir kritisk lave kortslutningsverdier. Det kan føre til svært uheldige konsekvenser for driften av de to HVDC-omformerne i ... -
Time Domain VIV Analysis Tool VIVANA-TD: Validations and Improvements
Wu, Jie; Jin, Jingzhe; Yin, Decao; Lie, Halvor; Passano, Elisabeth; Sævik, Svein; Tognarelli, Michael; Grytøyr, Guttorm; Andersen, Torgrim; Karunakaran, Daniel; Igland, Ragnar Torvanger (Chapter, 2020)An empirical time-domain (TD) vortex-induced vibration (VIV) prediction model has been implemented in a software called VIVANA-TD based on its earlier development by Thorsen at NTNU. It models the synchronization of VIV ...