Blar i Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM) på tittel
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Comparative dynamic analysis of two-rotor wind turbine on spar-type, semi-submersible, and tension-leg floating platforms
(Peer reviewed; Journal article, 2022)Multi-rotor floating offshore wind turbines have been recently proposed as an innovative technology to further reduce the cost of offshore wind energy. Even though examples of commercial prototypes are present, the literature ... -
Comparative Study and Simulation of Suspension System Using Vehicle Dynamics Simulation
(Masteroppgave/UIS-TN-IMBM/2018;, Master thesis, 2018-06-14)With the increased availability of computing power, simulation tools has become more available for the average user. This has led to a lot of specialized software for most simulation needs. In Formula Student vehicle ... -
Comparative study of circular and square gravity-based fish cages with different dimensions under pure current conditions
(Peer reviewed; Journal article, 2021-12)Two typical gravity-based fish cages with circular and square shapes are modeled in the present study to compare their cage deformations, cultivation volumes and drag forces under different pure current conditions. Two hy ... -
Comparative study of deterministic and probabilistic fatigue assessment methods
(Masteroppgave/UIS-TN-IKM/2015;, Master thesis, 2015-06-15)The subject of this thesis is to compare the use of a deterministic and probabilistic assessment methods in fatigue analysis. The thesis focuses on the nominal stress method in the stresslife approach. Three different ... -
Comparative study of five commonly used gravity type fish cages under pure current conditions
(Peer reviewed; Journal article, 2022-04)Gravity type fish cages have been commonly used in marine aquaculture for years. However, only limited research efforts have been made to assess the influences of different design parameters on the structural responses of ... -
Comparative study of indirect tensile test and uniaxial compression test on asphalt mixtures: Dynamic modulus and stress-strain state
(Peer reviewed; Journal article, 2022)Dynamic modulus is an essential parameter for the performance characterisation of asphalt materials for performance prediction and pavement design. The Indirect Tensile (IDT) test and the Uniaxial Compression (UC) test are ... -
Comparative study on global motion of rectangular and circular column semisubmersibles
(Master thesis, 2015-06)A comparative study on the global motion characteristics of two semisubmersible units having similar hull arrangement, but different hull column geometry is carried out. All comparisons are considered at an operational ... -
Comparative study on loosening of anti-loosening bolt and standard bolt system
(Peer reviewed; Journal article, 2022)In general, bolted connections are exposed to vibrations or repeated over-loads that could lead to self-loosening due to loss of preload. Pre-tensioned bolts in ring flanges are critical parts in Offshore Floating Wind ... -
Comparing different CFD wind turbine modelling approaches with wind tunnel measurements
(Peer reviewed; Journal article, 2014)The performance of a model wind turbine is simulated with three different CFD methods: actuator disk, actuator line and a fully resolved rotor. The simulations are compared with each other and with measurements from a wind ... -
Comparison of different design guidelines for steel fibre reinforced concrete (SFRC) structures
(Masteroppgave/UIS-TN-IMBM/2019;, Master thesis, 2019-06)One of the main reasons for the limited use of steel fibre reinforced concrete (SFRC) in load-carrying structures today is the lack of accepted design guidelines. The Norwegian Concrete Association (Norsk Betongforening) ... -
Comparison of offshore wind profiles using FINO-1 and FINO-3 data
(Masteroppgave/UIS-TN-IKM/2012;, Master thesis, 2012)The use of wind energy for power purposes has a long history going back to the medieval times. In recent times the wind energy has experienced a great development in both size and the energy output it can produce. Previously ... -
Comparison of spar and semi-submersible floating wind turbine concepts with respect to seasickness of the maintenance personnel
(Master thesis, 2021)Floating offshore wind turbines (FOWTs) are remotely located structures that are operating without humans on board. The technicians are expected to be on board from time to time throughout the life cycle of FOWTs for ... -
Comparison of unidirectional and bidirectional airfoils in a tidal stream turbine
(Peer reviewed; Journal article, 2022)Tidal stream turbines offer an attractive method for stable renewable energy generation. Due to the periodicity of the tidal stream, a tidal stream turbine can be designed to operate in a bidirectional manner, thereby ... -
Comparison of weather data from FINO3 and ERA5 in Wind Farm Installation Campaign Simulations.
(Masteroppgave/UIS-TN-IMBM/2020;, Master thesis, 2020-06-30)Weather data are commonly used in the planning phase of an offshore wind farm installation campaign. Knowledge of site-specific weather conditions is of great importance regarding transport and installation as well as ... -
Comparison study of deepwater installation methods
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-16)The combination of deeper offshore field developments and larger, more complex subsea structures results in new requirements and challenges for installation vessels and related deployment systems. The conventional vertical ... -
A comparison study of power performance and extreme load effects of large 10-MW offshore wind turbines
(Peer reviewed; Journal article, 2023)The utilisation of offshore wind turbines has rapidly increased in the last decade, which has resulted in a steady increase in wind turbine sizes. The global average offshore wind turbine size has increased from 1.5 MW to ... -
Comparison study of selected uncoupled riser concepts in deep water and harsh environment
(Masteroppgave/UIS-TN-IKM/2014;, Master thesis, 2014-06-13)Installing deep water risers in harsh environmental conditions even in the icing environment, in the near future seems like inevitable. Especially in the Norwegian Sea, the development of deep water technology requires an ... -
Comparisons study of S-Lay and J-Lay methods for pipeline installation in ultra deep water
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013)The pipeline industry has developed its technical capabilities to enable operations in deeper water. In ultra deepwater developments, the offshore industry has been challenged to solve demanding tasks, to develop new and ... -
A compensation scheme applied on wind turbine blade pitch control for the reduction of non-torque main shaft loads
(Peer reviewed; Journal article, 2021)It has been well established that non-torque main shaft loads influence the internal drive train loads. This paper proposes a scheme that compensates for non-torque loads in the blade pitch controller. The compensation ... -
Composing of conceptual solutions for the Silurian deposits development of the Prirazlomnoye oilfield in the Pechora Sea
(Master thesis, 2022)Russian Arctic shelf opens broad opportunities for oil and gas fields’ development and hydrocarbon potential for the years to come. Among a number of other fields, the Prirazlomnoye oilfield is a unique one, as it is the ...