Browsing SINTEF Ocean by Title
Now showing items 868-887 of 1442
-
Numerical and experimental investigations on mooring loads of a marine fish farm in waves and current
(Journal article; Peer reviewed, 2018-05)A realistic aquaculture fish farm system in both regular and irregular waves is investigated by numerical simulations and model tests. The main purpose is to develop a reliable numerical tool and in this respect to investigate ... -
Numerical and experimental study on the drainage and collapse of a floating flexible bag structure
(Journal article; Peer reviewed, 2018-11)This paper addresses the possible drainage and collapse of closed flexible cages in sea-based fish farming. A closed flexible cage is a floating bag structure containing water that is enclosed from the ambient water. ... -
Numerical and Experimental Study on the Seakeeping Behavior of Floating Closed Rigid Fish Cages
(ASME digital collection;OMAE2018-77254, Chapter, 2018-06-25)The present paper addresses the seakeeping behavior of a rigid type of floating closed fish cages, with focus on effects of sloshing on the coupled motions and mooring loads. Closed cages have gained much attention recently ... -
Numerical assessment of a double-acting offshore vessel's performance in level ice with experimental comparison
(Journal article; Peer reviewed, 2014-10)In this paper a numerical model is used to investigate the level ice performance of a double-acting intervention vessel, and the results are compared with a limited set of experimental data. The icebreaking capability and ... -
Numerical Integration and Interpolation in Marine Pollutant Transport Modelling
(Chapter, 2018)Transport modelling of oil and other chemicals in the ocean relies on information on curret velocity as a function of position and time, v(x, t). These data will in many cases be supplied from an ocean circulation model, ... -
Numerical integrators for Lagrangian oceanography
(Journal article; Peer reviewed, 2020-12-01)A common task in Lagrangian oceanography is to calculate a large number of drifter trajectories from a velocity field pre-calculated with an ocean model. Mathematically, this is simply numerical integration of an Ordinary ... -
Numerical investigation of an ammonia-water absorption-compression high-temperature heat pump for hot water and steam production in food processing
(Chapter, 2023)To achieve climate neutrality in the food sector, there is an urgent need for eco-friendly steam boilers. The absorption-compression heat pumps (ACHP) using an ammonia-water mixture as working fluid can provide a high heat ... -
Numerical Investigation of Irregular Breaking Waves for Extreme Wave Spectra Using CFD
(;ISOPE-I-17-460, Chapter, 2017-06)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 ... -
Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements
(Journal article; Peer reviewed, 2020-01-30)This paper presents a numerical algorithm used together with a Finite-Element based Vortex-Induced Vibration (VIV) prediction software VIVANA to obtain a hydrodynamic force coefficient database based on response measurements ... -
Numerical modelling of (thin) oil films - Improved behaviour and life time of thin films in the OSCAR model
(SINTEF Ocean report;OC2017 A-181, Research report, 2017-09-21)The PETRO MAKS project "Formation and behaviour of thin oil films and evaluation of response methods including HSE", in the following short "Thin oil films" has the objective to achieve new knowledge more efficient and ... -
Numerical Modelling of Drag and Lift Forces on Aquaculture Nets: Comparing New Numerical Load Model With Physical Model Test Results
(Chapter; Peer reviewed, 2022)The Norwegian aquaculture industry expands towards sites with a harsher current and wave environment than before, while utilizing larger and more complex designs. This increases the need of precise modelling of hydrodynamic ... -
Numerical modelling of field test for crack risk assessment of early age concrete containing fly ash
(Journal article; Peer reviewed, 2018-09-09)The high-strength/high-performance concretes are prone to cracking at early age due to low water/binder ratio. The replacement of cement with mineral additives such as fly ash and blast-furnace slag reduces the hydration ... -
Numerical modelling of hydrodynamic responses of Ocean Farm 1 in waves and current and validation against model test measurements
(Peer reviewed; Journal article, 2021)With the continuous growing of the aquaculture industry and increasingly limited fish farming sites at close to shore areas both in Norway and worldwide, there is a need to develop fish farms suitable for aquaculture ... -
Numerical simulation and comparison with experiments of a floating wind turbine using a direct forcing method
(Chapter; Peer reviewed, 2022)The open-source Computational Fluid Dynamic (CFD) code REEF3D is used to simulate the hydrodynamic loads and motion response of a floating wind turbine substructure, the INO WINDMOOR semi-submersible floating wind turbine. ... -
Numerical Study of a Fishing Vessel Operating in Partially Ice Covered Waters
(ASME digital collection;OMAE2018-77464, Chapter, 2018-06)The Arctic ocean has been the focus of increasing activities in oil and gas, marine traffic and fisheries as the resources in the Arctic area becomes more attractive for exploitation. There have been several studies on the ... -
Numerical Study of a Moored Structure in Moving Broken Ice Driven by Current and Wave
(ASME Digital colletion;OMAE2017-61252, Chapter, 2017-06-25)This paper presents a numerical model intended to simulate the mooring load and the dynamic response of a moored structure in drifting ice. The mooring lines were explicitly modelled by using a generic cable model with a ... -
Numerical Study of a Single-Point Mooring Gravity Fish Cage With Different Deformation-Suppression Methods
(ASME Digital collection;OMAE2019-96079, Chapter, 2019-06)Compared to the multi-point mooring fish cage, the single point mooring (SPM) fish cage can spread out the accumulation of organic matter to prevent the local environment from being overwhelmed, and reduce the manufacturing ... -
Numerical study of closed rigid fish cages in waves and comparison with experimental data
(Peer reviewed; Journal article, 2021)Closed fish cages have gained increased interest in marine aquaculture. However, knowledge on the seakeeping behaviour of a floating closed cage and the influence of the contained water inside the cage are still limited. ... -
NumSim - Numerical simulation of complex systems involving interaction between elements with large and varying stiffness properties
(SINTEF Fiskeri og Havbruk reports;A27066, Research report, 2015-07-31)This report is a short summa ry of the research activity and results obtained in the project Numsim - Numerical simulation of complex systems involving interaction between elements with large and varying stiffness properties. ... -
Nutrient fluxes in the Arctic in the present climate regime
(SINTEF Fiskeri og havbruk;A26604, Research report, 2014-12-19)The Arctic Ocean (AO) will likely become ice-free in summer within the next two decades. This will change light conditions for primary production. Parts of the AO where primary production is presently light limited will ...