• A 2D Experimental and Numerical Study of Moonpools With Recess 

      Ravinthrakumar, Senthuran; Kristiansen, Trygve; Ommani, Babak (ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering;OMAE2018-78326, Chapter, 2018-06-25)
      Moonpool resonance is investigated in a two-dimensional setting in terms of regular, forced heave motions of a model with moonpool with different rectangular-shaped recess configurations. A recess is a reduced draft zone ...
    • Bilge keel induced roll damping of an FPSO with sponsons 

      Ommani, Babak; Fonseca, Nuno; Kristiansen, Trygve; Bakksjø, Hanne (ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering - Volume 1: Offshore Technology;Offshore Geotechnics;OMAE2016-54420, Chapter, 2016-06)
      The bilge keel induced roll damping of an FPSO with sponsons is investigated numerically and experimentally. The influence of the bilge keel size, on the roll damping is studied. Free decay tests of a three-dimensional ...
    • Experimental and numerical investigations of monopile ringing in irregular finite-depth water waves 

      Bachynski, Erin Elizabeth; Kristiansen, Trygve; Thys, Maxime (Journal article; Peer reviewed, 2017-08-16)
      In storm conditions, nonlinear wave loads on monopile offshore wind turbines can induce resonantringing-type responses. Efficient, validated methods which capture such events in irregular waves inintermediate or shallow ...
    • Investigating a Simplified Model for Moonpool Piston Mode Response in Irregular Waves 

      Ommani, Babak; Kristiansen, Trygve; Berget, Kjetil (ASME digital collection;OMAE2018-78352, Chapter, 2018-06-25)
      Estimating moonpool piston mode response at resonance is important for operation safety. This is a difficult task, in particular, due to nonlinear nature of the moonpool response connected to the damping imposed by the ...
    • The influence of fish on the mooring loads of a floating net cage 

      He, Zhao; Faltinsen, Odd Magnus; Fredheim, Arne; Kristiansen, Trygve (Journal article; Peer reviewed, 2018)
      The influence of fish on the mooring loads of a floating net cage is studied numerically and experimentally. Two experimental series were conducted. One case was model tests with artificial fish. Nine rigid fish models ...