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Havforskningsinstituttets rådgivning for menneskeskapt støy i havet — Kunnskapsgrunnlag, vurderinger og råd for 2025
(Research report; Forskningsrapport, 2025-01-10)Havforskningsinstituttet gir råd for alle operasjoner til havs som involverer bruk av lydkilder eller lager lyd, samt elektromagnetiske kilder som kan påvirke marine økosystemer. Dette inkluderer vitenskapelige undersøkelser, utbygging og sprenging i sjø, seismiske og elektromagnetiske undersøkelser i forbindelse med petroleumsvirksomhet , utbygging og drift av vindkraftanlegg til havs og skip. Denne ... -
Laser-Induced Plasma Effects on Bond Breaking in High-Density Polyethylene Pyrolysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-04-16)The conventional use of Laser-Induced Breakdown Spectroscopy (LIBS) for elemental analysis in high-density polyethylene (HDPE) limits the exploration of bond behavior in Physics and Chemistry. A suitable combination of process parameters, exceeding the bond dissociation threshold, enables LIBS to break HDPE bonds, facilitating laser-induced pyrolysis. However, understanding bond behavior post-breakage, ... -
Thermographic analysis of ethylene glycol–based aircraft anti-icing fluid: Investigation of fluid failure mechanisms during simulated snow endurance tests
(Journal article; Tidsskriftartikkel; Peer reviewed, 2025-02-26)Applying anti-icing fluid is the primary method of protecting aircraft surfaces from freezing precipitation before takeoff. This research's main objective is to deepen our understanding of the fluid failure mechanisms using the infrared thermography technique to observe the snow-fluid interactions. We use a laboratory-scale setup with an optical and infrared camera to study the interaction between ... -
Exploring Heat Transfer in Freezing Supercooled Water Droplet through High-Speed Infrared Thermography
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-11-07)This study explores the intricate heat transfer dynamics and thermographic patterns during the phase change from supercooled liquid water to ice. Using high-resolution, high-speed infrared thermography, real-time temperature data were captured during the freezing process. The resulting temperature profiles reveal critical insights into the freezing dynamics, particularly highlighting the rapid ... -
Investigating Ice Nucleation and Heat Transfer Dynamics in Supercooled Liquid Water Using Thermography
(Chapter; Bokkapittel, 2024-06)This study delves into the intricate interplay of thermography, ice nucleation, and heat transfer during the phase change from supercooled liquid water to crystallized ice. Utilizing high-resolution, high-speed infrared thermography, real-time temperature data is captured during ice nucleation events. By analysing these temperature profiles, valuable information about the dynamics of ice nucleation ... -
Assessment of aircraft anti-icing ethylene glycolbased fluid ethylene glycol-based performance using thermography approach
(Chapter; Bokkapittel, 2024-06)Protecting the aircraft surfaces from ground icing in cold weather conditions before takeoff via anti-icing fluids is crucial for flight safety. These fluids offer a specific protection time evaluated through outdoor endurance time testing. As outdoor conditions are difficult to standardize and repeat, there is interest in developing interior tests under simulated snow conditions. This study ... -
A hypothetical approach toward laser-induced high-density polyethylene pyrolysis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-08-02)Laser-induced breakdown spectroscopy (LIBS) is a commonly employed technique in commercial plastic recycling for purposes including classification, sorting, identification, and elemental analysis. However, understanding the molecular-level kinetics, thermodynamic interactions, bonding cleavage, and process parameter impacts is crucial for identifying necessary modifications to enhance plastic ... -
A quanta-independent approach for the assessment of strategies to reduce the risk of airborne infection
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-05)The Wells-Riley model is extensively used for retrospective and prospective modelling of the risk of airborne transmission of infection in indoor spaces. It is also used when examining the efficacy of various removal and deactivation methods for airborne infectious aerosols in the indoor environment, which is crucial when selecting the most effective infection control technologies. The problem is ... -
Nourishing learner autonomy in English academic writing
(Conference object; Konferansebidrag, 2023-05)Studies report that writing skills of many beginner students in Norwegian higher education institutions are not adequately developed, showing a lack of critical thinking and referencing technique and a poor requisite language ability (Wollcheid et al. 2020). Literature also shows that a traditional lecture setting does not help students to enhance their learning autonomy (Rynning, 2014). ... -
Exploring the Interconnected Realms of Multiphysics: Insights from My Research Journey
(Conference object; Konferansebidrag, 2024-04-02)In this talk, I present an in-depth exploration of multiphysics—a domain where physical processes or phenomena operate simultaneously and interact. My research encompasses the development and utilization of computational models to solve complex systems where interdependent physical processes coexist. From the fluid-structure interactions that play a critical role in various engineering applications ... -
Academic and research collaboration between the IVT departments
(Conference object; Konferansebidrag, 2024) -
A Convergent Numerical Algorithm for α-Dissipative Solutions of the Hunter–Saxton Equation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-03-02)A convergent numerical method for α -dissipative solutions of the Hunter–Saxton equation is derived. The method is based on applying a tailor-made projection operator to the initial data, and then solving exactly using the generalized method of characteristics. The projection step is the only step that introduces any approximation error. It is therefore crucial that its design ensures not only a ... -
Multiphysics in Engineering Education: Bridging Theory and Practice
(Conference object; Konferansebidrag, 2024-02-15)Multiphysics, the interdisciplinary field that integrates multiple physical phenomena into a unified framework, has emerged as a pivotal aspect of contemporary engineering education. This abstract explores the profound role of multiphysics in shaping the educational landscape, fostering a holistic approach that transcends traditional disciplinary boundaries. <p> <p>In the ever-evolving realm of ... -
Electrical stunning and killing of lumpfish with commercial waterbath and dry stunners
(Research report; Forskningsrapport, 2024-02-12)Lumpfish, ranging in size from 146-4200 g, were placed in an electric dry stunning unit head first and exposed to 50 Hz, 240 V AC for 0.5 or 1 s and thereafter 4.5 or 9 s of electricity, thus 5 and 10 s respectively. In seawater, lumpfish were exposed to an electric field equivalent of 4.6 Vrms/cm, 100 pps square AC, with 15% duty cycle for 1 s and thereafter 9 s. This to verify whether the animal ... -
Havforskningsinstituttets rådgivning for menneskeskapt støy i havet - Kunnskapsgrunnlag, vurderinger og råd for 2024
(Research report; Forskningsrapport, 2023)Havforskningsinstituttet gir råd for alle operasjoner til havs som involverer bruk av lydkilder, samt elektromagnetiske kilder som kan påvirke marine økosystemer. Dette inkluderer vitenskapelige undersøkelser, utbygging og sprenging i sjø, seismiske og elektromagnetiske undersøkelser i forbindelse med petroleumsvirksomhet , og utbygging og drift av vindkraftanlegg til havs. Denne rapporten er en ... -
Preface
(Chapter; Bokkapittel, 2024-01-18)In the ever-advancing realm of renewable energy, wind turbines have unfurled as magnificent guardians, capturing the boundless energy of the wind to lead us toward a cleaner, greener future. Within this captivating landscape, we proudly unveil “Multiphysics of Wind Turbines in Extreme Loading Conditions.” This book is concerned with one aspect of wind turbines which is deal-ing with multiphysics ... -
Ice shedding from wind turbines
(Chapter; Bokkapittel, 2024)Wind power is an excellent source of renewable energy in areas with sufficient wind resources. Usually, the best locations for wind turbines are on the tops of hills and ridges, where there are lower temperatures [1]. Cold temperatures are responsible for novel challenges [2, 3]. Due to cold climatic conditions, turbine blades are subjected to icing [4]. A number of methods have been proposed and ... -
Multiphysics modeling of wind turbines
(Chapter; Bokkapittel, 2024)According toThe International SocietyofMultiphysics (“Definition— MULTIPHYSICS”),multiphysics (sometimes spelledasmulti-physics) is defined as a coupled modeling approach of studies that demands simultaneous addressing of hitherto separate physical disciplines and combining them to generate relational mathematical models and validate them with controlled experiments to enhance the understanding of ... -
pH-dependent endocytosis mechanisms for influenza A and SARS-coronavirus
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-10)The ongoing SARS-CoV-2 pandemic and the influenza epidemics have revived the interest in understanding how these highly contagious enveloped viruses respond to alterations in the physicochemical properties of their microenvironment. By understanding the mechanisms and conditions by which viruses exploit the pH environment of the host cell during endocytosis, we can gain a better understanding ... -
A Qualitative Comparison of ANSYS and OpenFOAM results for Carbon dioxide Plume Transport
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-02)This research presents Computational Fluid Dynamics (CFD) simulations in ANSYS® illustrating emissions of to the air. The CFD simulations is employed to study plume transport in urban environment, i.e., Breivika port in the city of Tromsø. The case study presents a two-phase model considering specific wind strength and direction in the city of Tromsø. Geographical coordinates, temperature, and wind ...
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