Blar i Department of Mechanical and Structural Engineering and Materials Science (TN-IMBM) på tittel
Viser treff 1069-1088 av 1695
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Norwegian pipeline gas from an asset management perspective: present and future
(Masteroppgave/UIS-TN-IKM/2013;, Master thesis, 2013-06)With the growth of demand for new energy, natural gas was predicted to be in a golden age, where the energy commodity would act as a transitional energy source (due to its low emission) towards greener energy goals within ... -
Norwegian value creation related to development of offshore oil and gas fields
(Masteroppgave/UIS-TN-IKM/2016;, Master thesis, 2016-06-15)The development of petroleum field generates substantial values for Norway. In every development project there is always “local” and “global” contentment and Norwegian value creation depends on the combination of the two. ... -
Note on estimating bed shear stress caused by breaking random waves
(Peer reviewed; Journal article, 2021-04)This note presents a method of how the bed shear stress caused by breaking random waves on slopes can be estimated. This is obtained by adopting the Sumer et al. (2013) bed shear stress formula due to spilling and plunging ... -
Novel deconvolution method for extreme FPSO vessel hawser tensions during offloading operations
(Peer reviewed; Journal article, 2022)Robust prediction of extreme hawser tensions during Floating Production Storage and Offloading (FPSO) operations is an important safety and reliability concern. Excessive hawser tension may occur during certain environmental ... -
A novel design approach for estimation of extreme load responses of a 10-MW floating semi-submersible type floating wind turbine
(Peer reviewed; Journal article, 2022)Offshore structures are constructed to withstand extreme wind and wave-induced loads, so studying these extreme loads is vital as it allows offshore structures, e.g., wind turbines, to be designed and operated with minimal ... -
A novel design of a hybrid glulam-steel substructure for the IEA 15-MW floating wind turbine
(Peer reviewed; Journal article, 2023)Wind energy has become increasingly recognised as a very promising type of renewable energy. In addition, floating offshore wind turbines have facilitated the development of electricity production in intermediate (45-150 ... -
A novel method for prediction of extreme wind speeds across parts of Southern Norway
(Peer reviewed; Journal article, 2022)The paper describes a novel structural reliability method, particularly suitable for multi-dimensional environmental systems, either measured or numerically simulated over a sufficient period, resulting in sufficiently ... -
Novel methods for coupled prediction of extreme wind speeds and wave heights
(Peer reviewed; Journal article, 2023)Two novel methods are being outlined that, when combined, can be used for spatiotemporal analysis of wind speeds and wave heights, thus contributing to global climate studies. First, the authors provide a unique reliability ... -
Novel methods for reliability study of multi-dimensional non-linear dynamic systems
(Peer reviewed; Journal article, 2023)This research presents two unique techniques for engineering system reliability analysis of multi-dimensional non-linear dynamic structures. First, the structural reliability technique works best for multi-dimensional ... -
A Novel Model for Risk Regulations in the Offshore Oil and Gas Industry
(Peer reviewed; Journal article, 2022)Increasing interest from stakeholders has brought about a new emphasis on risk regulation in the oil and gas industry. Our basis for this work is the offshore oil and gas industry, which is composed of major operators, ... -
A novel multi regional reliability method for Covid-19 death forecast
(Peer reviewed; Journal article, 2022)Novel coronavirus disease is spread worldwide with considerable morbidity and mortality and presents an enormous burden on worldwide public health. The present study describes a novel bio-system reliability approach, ... -
A novel multi-dimensional reliability approach for floating wind turbines under power production conditions
(Peer reviewed; Journal article, 2022-08)Floating offshore wind turbines (FOWT) generate green renewable energy and are a vital part of the modern offshore wind energy industry. Robust predicting extreme offshore loads during FOWT operations is an important safety ... -
Novel reliability method validation for offshore structural dynamic response
(Peer reviewed; Journal article, 2022)The paper validates novel structural reliability Gaidai-Fu-Xing (GFX) method, particularly suitable for multi-dimensional structural responses, versus well established bivariate statistical method, that is known to accurately ... -
A novel statistical method for long-term coronavirus modelling
(Peer reviewed; Journal article, 2022)Background: Novel coronavirus disease has been recently a concern for worldwide public health. To determine epidemic rate probability at any time in any region of interest, one needs efficient bio-system reliability approach, ... -
A Novel Technique for Temporarily Repair and Improvement of Damaged Pin Joint Support Bores
(Peer reviewed; Journal article, 2022)Damaged support bores due to wear and ovality can be critical for a machine and its operation, in addition to representing a safety problem and risk of pin breakage. It can be a costly operation to perform the required ... -
NOx-utslipp fra skip
(Masteroppgave/UIS-TN-IKM/2007, Master thesis, 2008) -
Numerical analysis and risk analysis of the lifting operation of a subsea template
(Master thesis, 2022)Two different templates, template A and template B, for subsea oil and gas production are studied in this work. Numerical time-domain simulations for the crossing of the splash zone are run in OrcaFlex. Template A has ... -
Numerical analysis of a vessel-shaped offshore fish farm
(Peer reviewed; Journal article, 2018)The aquaculture industry is aiming to move fish farms from nearshore areas to open seas because of many attractive advantages in the open water. However, one major challenge is to design the structure to withstand the ... -
Numerical analysis of interference between an otter trawl board and a pipe-in-pipe system
(Masteroppgave/UIS-TN-IKM/2017;, Master thesis, 2017-06-29)Subsea pipelines are likely to be exposed to fishing activity, which may results in trawl gear interacting with a pipeline. The interaction is classified into impact, pull-over and a special case called hooking. The trawl ... -
Numerical Analysis of the Effect of Offshore Turbulent Wind Inflow on the Response of a Spar Wind Turbine
(Peer reviewed; Journal article, 2020)Turbulent wind at offshore sites is known as the main cause for fatigue on offshore wind turbine components. Numerical simulations are commonly used to predict the loads and motions of floating offshore wind turbines; ...