Blar i Vitenskapelige publikasjoner (TN-IMBM) på emneord "VDP::Matematikk og Naturvitenskap: 400"
Viser treff 1-20 av 26
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A Decision Model for Executing Plant Strategy: Maintaining the Technical Integrity of Petroleum Flowlines
(Journal article; Peer reviewed, 2012-05)The ‘strategic’ management of technical integrity has become a high profile subject matter over recent years within inspection and maintenance of assets in the process industry. The assets such as production and ... -
Aerodynamic influence of an alpine skier’s arms
(Peer reviewed; Journal article, 2022)Understanding how postural changes in alpine skiing affect the overall aerodynamic drag is highly important for enhancing performance. Although the arm configuration of the athlete can have a significant impact on the ... -
Bed packing configuration and hot-spot utilization for low-temperature CO2 methanation on monolithic reactor
(Peer reviewed; Journal article, 2022)The revival of CO2 methanation (Sabatier reaction) as part of the large-scale Power-to-Gas technology has stimulated the development of novel reactor concepts for better heat management due to its exothermic nature. The ... -
Bridge buffeting by skew winds: A quasi-steady case study
(Peer reviewed; Journal article, 2022)The buffeting response of a 5000-m-long curved floating bridge is investigated for different mean wind directions, with emphasis on the wind load formulations and use of experimental data. Wind tunnel tests, with a section ... -
A case study of offshore wind turbine positioning optimization methodology using a novel multi-stage approach
(Peer reviewed; Journal article, 2022)This investigation maximize the annual energy production (AEP) of a wind farm’s layout at a specific site using a novel multi-stage approach. The downstream wind turbines’ energy production decreases due to the reduced ... -
Computational investigation of the aerodynamic performance of reversible airfoils for a bidirectional tidal turbine
(Peer reviewed; Journal article, 2021)A reversible airfoil is an airfoil that has equal performance when the flow is reversed. Such airfoils are relevant for many different applications, including use in ventilation fans, helicopter rotors, wind turbines and ... -
Convolutional Neural Networks and Feature Fusion for Flow Pattern Identification of the Subsea Jumper
(Peer reviewed; Journal article, 2023)The gas–liquid two-phase flow patterns of subsea jumpers are identified in this work using a multi-sensor information fusion technique, simultaneously collecting vibration signals and electrical capacitance tomography of ... -
Disc golf trajectory modelling combining computational fluid dynamics and rigid body dynamics
(Peer reviewed; Journal article, 2022)In the sport of disc golf, athletes utilize discs with various shapes to achieve their desired throws. Computational methods have the potential to give further insight into how the disc shape and throw parameters influence ... -
Electron channeling studies of atom site preference and distribution in doped Mg2Si1-xSnx thermoelectrics
(Peer reviewed; Journal article, 2022)The electron channeling effect, i.e., the dependence of the characteristic x-ray emission on the crystallographic direction of the incoming beam in an analytical transmission electron microscope was employed to elucidate ... -
End-of-life solution prioritization for pre-cast concrete components aligning with circular economy targets
(Peer reviewed; Journal article, 2022)Circular economy (CE) targets provide an economic model to focus on the efficient use of resources by minimization of the waste, reduction of the linear consumption of natural resources, long-term value creation, and making ... -
Experimental and Numerical Study on the Slug Characteristics and Flow-Induced Vibration of a Subsea Rigid M-Shaped Jumper
(Peer reviewed; Journal article, 2023)The subsea jumper has become an essential part of subsea production systems as a gas–liquid mixing pipeline connecting the pipeline end manifold (PLEM) to the Christmas tree. During oil and gas transportation, as a common ... -
Experimental Investigation and Numerical Modeling of Two-Phase Flow Development and Flow-Induced Vibration of a Multi-Plane Subsea Jumper
(Peer reviewed; Journal article, 2022)As an essential component in the offshore oil and gas industry, subsea jumpers are likely to encounter the cyclic-induced stresses caused by the alternating movement of gas plugs and liquid slugs while transporting a ... -
Experimental investigation of residual stress distribution on girth welds fabricated at proximity using neutron diffraction technique
(Peer reviewed; Journal article, 2022)Maintaining minimum distance between repair and existing welds often becomes impractical due to the presence of compact layouts, original welds of branches, nozzles, etc. on offshore structural elements, pipelines, and ... -
Experimental Investigation on Effect of Weight Fraction of Sisal Fiber on Mechanical Properties of Sisal-E-Glass Hybrid Polymer Composites
(Peer reviewed; Journal article, 2023)Currently, hybridizing natural fibers with synthetic fiber is considered as the best solution for reducing the environmental pollution and the cost of materials. This is due to the lower mechanical properties and high water ... -
Feasibility Study of a Novel Open Ocean Aquaculture Ship Integrating with a Wind Turbine and an Internal Turret Mooring System
(Peer reviewed; Journal article, 2022)Marine aquaculture has been expanded into more remote areas due to the increasing demand for high value-added fish products, bringing more challenges in fuel supply and mooring safety to open ocean aquaculture farms. ... -
Gaidai-Xing reliability method validation for 10-MW floating wind turbines
(Peer reviewed; Journal article, 2023)In contrast to well-known bivariate statistical approach, which is known to properly forecast extreme response levels for two-dimensional systems, the research validates innovative structural reliability method, which is ... -
Harmfulness mapping for the Pechora Sea
(Peer reviewed; Journal article, 2019)Pechora Sea is characterized with many species including birds, fishes, benthic fauna and marine mammals. The food chains in the Pechora Sea ecosystems are simple and vulnerable to contamination even in a small concentration ... -
Influence of material factors on the determination of dynamic moduli and associated prediction models for different types of asphalt mixtures
(Peer reviewed; Journal article, 2022)In a Mechanistic-Empirical (ME) pavement design system, the dynamic modulus is used to characterise asphalt mixtures, which are affected by many factors including environmental conditions and material properties. This study ... -
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 ...