Browsing Vitenskapelige publikasjoner (TN-IMBM) by Title
Now showing items 262-281 of 444
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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 ... -
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 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; ... -
Numerical analysis of the influence of friction conditions on the pile-up effect in Vickers hardness measurements
(Peer reviewed; Journal article, 2019)Vickers indentation load-depth curve may be used to determine basic mechanical properties of metallic materials such as hardness, yield stress, modulus of elasticity, and elastic and plastic work. The pile-up phenomenon ... -
Numerical analysis on flow around a wall-mounted square structure using Dynamic Mode Decomposition
(Peer reviewed; Journal article, 2021-03)Numerical investigations of the flow around a wall-mounted square structure have been carried out by using three-dimensional Spalart-Allmaras Delayed Detached Eddy Simulations (SADDES). The Reynolds number based on the ... -
Numerical and analytical studies of ship deckhouse impact with steel and RC bridge girders
(Peer reviewed; Journal article, 2021)Bridges crossing navigable waterways are under the threat of accidental collisions from passing ships. However, previous research focus was mainly placed on ship collision with bridge substructures while ship-bridge ... -
Numerical investigation of breaking wave loads on the downstream inclined cylinder under shelter effect from the upstream vertical cylinder
(Peer reviewed; Journal article, 2021)Breaking waves interaction with two tandem cylinders are numerically studied using Computational Fluid Dynamic (CFD) software OpenFOAM. The effects of transverse inclined angles of the downstream cylinder and separation ... -
Numerical Investigation of Flow around Two Tandem Cylinders in the Upper Transition Reynolds Number Regime Using Modal Analysis
(Peer reviewed; Journal article, 2022)Flow around two tandem cylinders at Re = 3.6 × 106 for different center-to-center spacing ratio (L/D) is investigated numerically using two-dimensional (2D) Unsteady Reynolds-Averaged Navier–Stokes (URANS) equations combined ... -
Numerical investigation of scour beneath pipelines subjected to an oscillatory flow condition
(Peer reviewed; Journal article, 2021-10)The present study carries out two-dimensional numerical simulations to investigate scour beneath a single pipeline and piggyback pipelines subjected to an oscillatory flow condition at a Keulegan–Carpenter (KC) number of ... -
Numerical Investigation of Vortex-Induced Vibrations of a Flexible Riser with Staggered Buoyancy Elements
(Peer reviewed; Journal article, 2020-01)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 ...