Blar i NTNU Open på forfatter "Berthelsen, Petter Andreas"
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An immersed interface method for two-dimensional modelling of stratified flow in pipes
Berthelsen, Petter Andreas (Doktoravhandlinger ved NTNU, 1503-8181; 2004:139, Doctoral thesis, 2004)This thesis deals with the construction of a numerical method for solving two-dimensional elliptic interface problems, such as fully developed stratified flow in pipes. Interface problems are characterized by its non-smooth ... -
CFD Based Study of Steep Irregular Waves for Extreme Wave Spectra
Aggarwal, Ankit; Alagan Chella, Mayilvahanan; Bihs, Hans; Pakozdi, Csaba; Berthelsen, Petter Andreas; Arntsen, Øivind Asgeir (Journal article; Peer reviewed, 2017)Offshore structures are exposed to irregular sea states. It consists of breaking and non-breaking waves. They experience extreme wave loads perpetually after being installed in the open ocean. Thus, the study of steep waves ... -
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 ... -
Numerical Investigation of Irregular Breaking Waves for Extreme Wave Spectra Using CFD
Aggarwal, Ankit; Alagan Chella, Mayilvahanan; Bihs, Hans; Pakozdi, Csaba; Berthelsen, Petter Andreas; Arntsen, Øivind Asgeir (Chapter, 2017)Offshore structures are exposed to irregular sea states. It consists of breaking and non-breaking waves. They experience breaking wave loads perpetually after being installed in the open ocean. Thus, the study of wave ...