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    • Hydrodynamic Coefficients for Suction Anchors during Installation Operations 

      Solaas, Frøydis; Sandvik, Peter Christian (ASME Proceedings | Torgeir Moan Honoring Symposium;OMAE2017-62447, Chapter, 2017-06-25)
      Increasing demands on economy in the offshore industry and extension to North Atlantic all-year operations bring along a requirement for more accurate numerical simulations of marine installation operations. These simulations ...

    • Hydrodynamic Coefficients of a Flexible Pipe With Staggered Buoyancy Elements and Strakes under VIV Conditions 

      Fu, Shixiao; Lie, Halvor; Wu, Jie; Baarholm, Rolf Jarle (ASME Proceedings | Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV;OMAE2017-62535, Chapter, 2017-06-25)
      A 38m long flexible pipe with staggered buoyancy modules and strakes has been tested in the ocean basin of SINTEF Ocean (former Marintek) for VIV investigation of a lazy wave riser. In this paper the inverse analysis method ...

    • Hydrodynamic Coefficients of Generic Subsea Modules in Forced Oscillation Tests – Importance of Structure Parts 

      Abrahamsen-Prsic, Mia; Solaas, Frøydis; Kristiansen, Trygve (Chapter; Peer reviewed, 2022)
      A systematic study of the hydrodynamic coefficients for simplified subsea modules has been performed, to support the estimation of the coefficients needed for planning of subsea installation operations. The coefficients ...

    • Hydrodynamic Coupling of Viscous and Nonviscous Numerical Wave Solutions Within the Open-Source Hydrodynamics Framework REEF3D 

      Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Martin, Tobias; Bihs, Hans (Journal article; Peer reviewed, 2022)
      A comprehensive understanding of the marine environment in the offshore area requires phase-resolved wave information. For far-field wave propagation, computational efficiency is crucial, as large spatial and temporal ...

    • Hydrodynamic investigation into a novel IC-CLC reactor concept for power production with integrated CO2 capture 

      Zaabout, Abdelghafour; Cloete, Schalk; Amini, Shahriar (SINTEF Proceedings;1, Chapter; Conference object; Peer reviewed, 2015)
      This paper presents an investigation of the hydrodynamics of a new Chemical Looping Combustion (CLC) reactor concept for power generation with integrated CO2 capture. This concept consists of an internal circulating fluidized ...

    • Hydrodynamic loads on net panels with different solidities 

      Føre, Heidi Moe; Endresen, Per Christian; Norvik, Carina; Lader, Pål (Journal article; Peer reviewed, 2021)
      Drag forces on nets represent the largest contribution to hydrodynamic loads on traditional fish farms, and will have a large impact on total loads on new designs utilizing netting as containment method. Precise methods ...

    • Hydrodynamic Model Tests With a Large Floating Hydrocarbon Storage Facility 

      Fonseca, Nuno; Chi, Zhang; Rodrigues, José Miguel; Ren, Nianxin; Hellan, Øyvind; Magee, Allan R. (OMAE2019;96761, Chapter, 2019-06)
      The paper presents model tests with a floating hydrocarbon storage facility performed in SINTEF Ocean’s basin. The system may be considered a very large floating structure with a footprint of 300m × 310m. Hydrocarbons are ...

    • Hydrodynamic testing of wind-assisted cargo ships using a cyber–physical method 

      Sauder, Thomas Michel; Alterskjær, Sverre Anders (Peer reviewed; Journal article, 2021)
      A novel empirical method to study wind-assisted cargo ships is presented. The physical ship model, including propulsion units, interacts in real-time with a numerical sail model during free-running tests. Loads from the ...

    • Hydrodynamics of Flexible Pipe With Staggered Buoyancy Elements Undergoing Vortex-Induced Vibrations 

      Zhang, Mengmeng; Fu, Shixiao; Song, Laijian; Wu, Jie; Lie, Halvor; Ren, Haojie (ASME Proceedings | Prof. Carl Martin Larsen and Dr. Owen Oakley Honoring Symposia on CFD and VIV;OMAE2017-61265, Chapter, 2017-06-25)
      Flexible riser with staggered buoyancy elements has been widely used in ocean engineering, such as steel lazy wave riser, drilling riser, etc. Both the buoyancy elements and the riser may experience vortex induced vibrations ...

    • Hydroelastic response of concrete shells during impact on calm water 

      Abrahamsen, Bjørn Christian; Grytten, Frode; Hellan, Øyvind; Søreide, Tore H.; Faltinsen, Odd Magnus (Peer reviewed; Journal article, 2023)
      Many ocean structures located offshore are supported by large vertical concrete columns. High and steep storm waves – in the process of breaking – may induce large local slamming loads on these columns. The present work ...

    • Hydroelastic response of Froude scaled stiffened steel panels exposed to design-critical wave slamming 

      Abrahamsen, Bjørn Christian; Grytten, Frode; Andreassen, Erik; Hellan, Øyvind (Peer reviewed; Journal article, 2023)
      Stiffened steel panels of offshore ocean structures may experience violent wave impacts which needs to be accounted for in design. The slamming pressures are often measured in scaled wave tank tests and imposed on finite ...

    • Hydrogen Enhanced Fatigue Crack Growth Rates in a Ferritic Fe-3wt%Si Alloy 

      Alvaro, Antonio; Wan, Di; Olden, Vigdis; Barnoush, Afrooz (Journal article; Peer reviewed, 2018)
      It is well known that the presence of hydrogen in ferrous materials promotes both static fracture and affect the material fatigue crack growth rates. The latter is often referred to as Hydrogen Enhanced Fatigue Crack Growth ...

    • Hydrogen enhanced fatigue crack growth rates in a ferritic Fe-3 wt%Si alloy and a X70 pipeline steel 

      Alvaro, Antonio; Wan, Di; Olden, Vigdis; Barnoush, Afrooz (Journal article; Peer reviewed, 2019)
      It is well known that ferrous materials can be damaged by absorption of hydrogen. If a sufficient quantity of hydrogen penetrates into the material, static fracture and the material's fatigue performances can be affected ...

    • Hydrogen for Europe - Final report of the pre-study 

      Reigstad, Gunhild Allard; Coussy, Paula; Straus, Julian; Bordin, Chiara; Jaehnert, Stefan; Størset, Sigmund Østtveit; Ruff, Benjamin (SINTEF Rapport;, Research report, 2019)
      At present there is an ongoing process within the EU on how to fulfil the commitment made to the Paris agreement. The role of hydrogen, and in particular hydrogen from natural gas combined with capture and storage of the ...

    • Hydrogen for maritime application—quality of hydrogen generated onboard ship by electrolysis of purified seawater 

      Bacquart, Thomas; Moore, Niamh; Wilmot, Robbie; Bartlett, Sam; Morris, Abigail Siân Olivia; Olden, James; Becker, Hans; Aarhaug, Thor Anders; Germe, Sebastien; Riot, Patrick; Murugan, Arul; Mattelaer, Vincent (Peer reviewed; Journal article, 2021)
      Maritime transport is investigating several options to reduce its greenhouse gases and air pollutant emissions. An experimental ship, Energy Observer, is using excess renewable energy to generate onboard hydrogen by ...

    • Hydrogen from wet air and sunlight in a tandem photoelectrochemical cell 

      Xu, Kaiqi; Chatzitakis, Athanasios Eleftherios; Vøllestad, Einar; Ruan, Qiushi; Tang, Junwang; Norby, Truls Eivind (Peer reviewed; Journal article, 2019)
      A solid-state photoelectrochemical (SSPEC) cell is an attractive approach for solar water splitting, especially when it comes to monolithic device design. In a SSPEC cell the electrodes distance is minimized, while the use ...

    • Hydrogen Induced Vacancy Clustering and Void Formation Mechanisms at Grain Boundaries in Palladium 

      Polfus, Jonathan Marc; Løvvik, Ole Martin; Bredesen, Rune; Peters, Thijs (Peer reviewed; Journal article, 2020)
      Hydrogen has a significant impact on the formation of vacancies, clusters and voids in palladium and other metals. The formation of vacancy-hydrogen complexes in bulk Pd and at Σ3 and Σ5 grain boundaries was investigated ...

    • Hydrogen Influence on Mechanical Properties in Pipeline Steel - state of the art 

      Hagen, Anette Brocks; Alvaro, Antonio (SINTEF Rapport;, Research report, 2020)
      The state-of-the-art report consist of an overview and a summary of the mechanical behaviour of pipeline steels (in the range of X42-X70) when exposed to electrochemical charging and gaseous hydrogen environment. Experimental ...

    • Hydrogen informed Gurson model for hydrogen embrittlement simulation 

      Yu, Haiyang; Olsen, Jim Stian; Alvaro, Antonio; qiao, lijie; He, Jianying; Zhang, Zhiliang (Peer reviewed; Journal article, 2019)
      Hydrogen-microvoid interactions were studied via unit cell analyses with different hydrogen concentrations. The absolute failure strain decreases with hydrogen concentration, but the failure loci were found to follow the ...

    • Hydrogen production by water splitting using gas switching technology 

      Ugwu, Ambrose; Donat, Felix; Zaabout, Abdelghafour; Müller, Christoph; Albertsen, Knuth; Cloete, Schalk Willem Petrus; van Diest, Geert; Amini, Shahriar (Peer reviewed; Journal article, 2020)
      This study demonstrates a novel “Gas Switching Water Splitting (GSWS)” technology for production of pure H2with integrated CO2capture. The reactor concept is based on the chemical looping technology where an oxygen carrier ...