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Proceedings Papers

Air-Gap Analysis of a Semi-Submersible Considering Full Second Order Effects

Zhiyuan Pan, Torgeir Kirkhorn Vada, Arne Nestegård
Proc. ASME. OMAE2019, Volume 7A: Ocean Engineering, V07AT06A016, June 9–14, 2019
Paper No: OMAE2019-95300
DOI: https://doi.org/10.1115/OMAE2019-95300
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Topics: Semi-submersible offshore structures, Computation, Seas
Proceedings Papers

Efficient Calculation of Low Frequency Motions for Air-Gap Prediction

Zhiyuan Pan, Torgeir Kirkhorn Vada, Arne Nestegård
Proc. ASME. OMAE2018, Volume 7A: Ocean Engineering, V07AT06A038, June 17–22, 2018
Paper No: OMAE2018-77416
DOI: https://doi.org/10.1115/OMAE2018-77416
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Topics: Computation, Computer software, Flow (Dynamics), Potential theory (Physics), Seas
Proceedings Papers

Analysis of Semi-Submersible Under Combined High Waves and Current Conditions Compared With Model Tests

Limin Yang, Arne Nestegård, Erik Falkenberg
Proc. ASME. OMAE2018, Volume 1: Offshore Technology, V001T01A078, June 17–22, 2018
Paper No: OMAE2018-78595
DOI: https://doi.org/10.1115/OMAE2018-78595
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Topics: Semi-submersible offshore structures, Waves, Diffraction, Radiation (Physics), Simulation models, Wave drift forces, Damping, Drag (Fluid dynamics), Excitation, Flow (Dynamics)
Proceedings Papers

Viscous Drift Force and Motion Analysis of Semi-Submersible in Storm Sea States Compared With Model Tests

Limin Yang, Erik Falkenberg, Arne Nestegård, Jørn Birknes-Berg
Proc. ASME. OMAE2017, Volume 1: Offshore Technology, V001T01A082, June 25–30, 2017
Paper No: OMAE2017-62319
DOI: https://doi.org/10.1115/OMAE2017-62319
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Topics: Seas, Semi-submersible offshore structures, Storms, Drag (Fluid dynamics), Excitation, Flow (Dynamics), Waves, Nonlinear waves, Stress, Wave forces
Proceedings Papers

A Response Model for Vortex Induced Vibrations in Low KC Number Flows

Knut Vedeld, Håvar Sollund, Olav Fyrileiv, Arne Nestegård
Proc. ASME. OMAE2016, Volume 2: CFD and VIV, V002T08A047, June 19–24, 2016
Paper No: OMAE2016-55000
DOI: https://doi.org/10.1115/OMAE2016-55000
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Topics: Flow (Dynamics), Vortex-induced vibration, Wave frequency, Waves, Cross-flow, Design, Ocean engineering, Vibration, Lift (Fluid dynamics), Pressure
Proceedings Papers

The EXWAVE JIP: Improved Procedures to Calculate Slowly Varying Wave Drift Forces on Floating Units in Extreme Seas

Nuno Fonseca, Carl Trygve Stansberg, Arne Nestegård, Arne Bøckmann, Rolf Baarholm
Proc. ASME. OMAE2016, Volume 1: Offshore Technology; Offshore Geotechnics, V001T01A037, June 19–24, 2016
Paper No: OMAE2016-54829
DOI: https://doi.org/10.1115/OMAE2016-54829
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Topics: Computational fluid dynamics, Design, Drilling rigs, Excitation, Floating structures, FPSO, Mobile offshore drilling units, Nonlinear waves, Seas, Semi-submersible offshore structures
Proceedings Papers

Benchmark Study of Numerical Approaches for Wave-Current Interaction Problem of Offshore Floaters

Zhiyuan Pan, Torgeir Vada, Styrk Finne, Arne Nestegård, Jan Roger Hoff, Elin Marita Hermundstad, Carl Trygve Stansberg
Proc. ASME. OMAE2016, Volume 1: Offshore Technology; Offshore Geotechnics, V001T01A024, June 19–24, 2016
Paper No: OMAE2016-54411
DOI: https://doi.org/10.1115/OMAE2016-54411
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Topics: Ocean engineering, Waves, Mooring, Semi-submersible offshore structures, Tankers, Wave drift forces
Proceedings Papers

Hydrodynamic Coefficients for Straked Risers

Arne Nestegård, Per Erlend Voie, Nils Sødahl
Proc. ASME. OMAE2014, Volume 6A: Pipeline and Riser Technology, V06AT04A014, June 8–13, 2014
Paper No: OMAE2014-23222
DOI: https://doi.org/10.1115/OMAE2014-23222
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Topics: Pipeline risers, Risers (Casting), Drag (Fluid dynamics), Vortex-induced vibration, Flow (Dynamics), Steel, Water, Calibration, Currents, Flexible risers
Proceedings Papers

Prediction of Irregular Motions of Free-Fall Lifeboats During Drops From Damaged FPSO

Vidar Tregde, Arne Nestegård
Proc. ASME. OMAE2014, Volume 2: CFD and VIV, V002T08A004, June 8–13, 2014
Paper No: OMAE2014-23090
DOI: https://doi.org/10.1115/OMAE2014-23090
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Topics: FPSO, Lifeboats, Waves, Computational fluid dynamics, Regression analysis, Storms, Databases, Cycles, Design, Engineering simulation
Proceedings Papers

Statistical Methods for Prediction of Characteristic Loads for Free Fall Lifeboats Based on CFD Screening Results

Vidar Tregde, Arne Nestegård
Proc. ASME. OMAE2013, Volume 9: Odd M. Faltinsen Honoring Symposium on Marine Hydrodynamics, V009T12A010, June 9–14, 2013
Paper No: OMAE2013-10296
DOI: https://doi.org/10.1115/OMAE2013-10296
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Topics: Computational fluid dynamics, Lifeboats, Stress, Seas, Waves, Databases, Elevations (Drawings), Interpolation, Probability, Structural design
Proceedings Papers

Second-Order Kinematics Underneath Irregular Waves

Jørn Birknes, Øistein Hagen, Thomas B. Johannessen, Øystein Lande, Arne Nestegård
Proc. ASME. OMAE2013, Volume 2B: Structures, Safety and Reliability, V02BT02A053, June 9–14, 2013
Paper No: OMAE2013-11629
DOI: https://doi.org/10.1115/OMAE2013-11629
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Topics: Kinematics, Waves, Water, Elevations (Drawings)