Browsing Fakultet for ingeniørvitenskap (IV) by Title
Now showing items 22892-22911 of 23131
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Wave Response Experiments of Fish Farms
(Master thesis, 2023)Den globale havbruksnæringen er i en fase med store expansjon. Bærekraftig vekst i havbrukssektoren er en flott mulighet til å sikre sunn mat for mange. Det krever strenge regler og forskrifter, som drar nytte av omfattende ... -
Wave response of closed flexible bags
(Journal article; Peer reviewed, 2017)Recent environmental considerations, as salmon lice, escape of farmed fish and release of nutrients, have prompted the aquaculture industry to consider the use of closed fish production systems (CFPS). The use of such ... -
Wave runup and wave rundown estimation based on long-term variation of wind statistics
(Journal article; Peer reviewed, 2018)The paper presents a simple analytical method that can be used to estimate wave runup (RU) and wave rundown (RD) on shorelines and coastal structures for sea states based on long-term wind statistics. Eight different ... -
Wave Runup and Wave Rundown on Shorelines and Coastal Structures Based on Long-Term Variation of Wind and Wave Conditions
(Master thesis, 2017)In the resent years the fear of violent storms occuring more often, and with increasing violence, has drawn new attention to research on wave runup and wave rundown. Severe storm conditions could cause great damage on ... -
Wave Slamming Forces on Offshore Wind Turbine Jacket Substructures
(Doctoral theses at NTNU;2018:237, Doctoral thesis, 2018)Currently, the development of offshore wind energy is mainly in shallow or intermediate water, where bottom-fixed substructures (e.g. monopiles and jackets) are mainly used. In harsh environmental conditions at certain ... -
Wave slamming forces on truss structures for wind turbines
(Master thesis, 2013)Generally the foundations of offshore wind turbines are steel truss structures which are exposed to wave slamming forces due to breaking waves, typically plunging breaking waves in shallow water. Calculations show that the ... -
Wave slamming forces on truss support structures for wind turbines
(Master thesis, 2012)This thesis is a study of the slamming forces from plunging breaking waves on truss support structures in shallow water. The main parts have been model testing and analysis on an existing 1:50 scale model of a truss support ... -
Wave- and wind-induced responses of the semisubmersible wind energy and flap-type wave energy converter based on experiments
(Journal article; Peer reviewed, 2017)This paper deals with a study of wave and wind induced responses of the combined energy concept SFC in operational and survival conditions based on experimental data. The measured responses that are studied include motions ... -
Wave-in-Deck Forces and Response of Semi-Submersibles
(Master thesis, 2017)In critical sea states, semi-submersibles may experience large negative air gaps in which incoming waves cause large slamming loads that may lead to severe structural deformations. Wave loads due to slamming are difficult ... -
Wave-Induced Accelerations of a Fish-Farm Elastic Floater: Experimental and Numerical Studies
(Chapter; Peer reviewed, 2014)Numerical simulations and experiments of an elastic circular collar of a floating fish farm are reported. The floater model without netting structure is moored with nearly horizontal moorings and tested in regular deep-water ... -
Wave-induced bottom shear stress estimation in shallow water exemplified by using deep water wind statistics
(Journal article; Peer reviewed, 2017)The paper provides a simple and analytical method which can be used to give estimates of the wave-induced bottom shear stress for very rough beds and mud beds in shallow water based on wind statistics in deep water. This ... -
Wave-induced current for long-crested and short-crested random waves
(Journal article; Peer reviewed, 2014)This paper provides a simple analytical tool which can be used to calculate the wave-induced current beneath long-crested (2D) and short-crested (3D) random waves. The approach is based on assuming the waves to be a ... -
Wave-induced nonlinear effects on a pontoon-type Very Large Floating Structures (VLFS)
(Doktoravhandlinger ved NTNU, 1503-8181; 2011:61, Doctoral thesis, 2011)The wave-induced nonlinear effects on the pontoon-type Very Large Floating Structure (VLFS) is investigated in this thesis. Typical dimensions of the pontoon-type VLFS such as a floating airport are 5000m in length, 2000m ... -
Wavefield reconstruction for velocity–stress elastodynamic full-waveform inversion
(Peer reviewed; Journal article, 2020)Gradient computations in full-waveform inversion (FWI) require calculating zero-lag cross-correlations of two wavefields propagating in opposite temporal directions. Lossless media permit accurate and efficient reconstruction ... -
Waves and associated currents-experiences from 5 years metocean measurements in the northern North Sea
(Journal article; Peer reviewed, 2019) -
Waves' numerical dispersion and damping due to discrete dispersion relation
(Chapter; Peer reviewed, 2014)In linear Rankine panel method, the discrete linear dispersion relation is solved on a discrete free-surface to capture the free-surface waves generated due to wave-body interactions. Discretization introduces numerical ... -
Wax Deposition as a Function of Flow Regimes
(Master thesis, 2018)As petroleum fluids flow in subsea pipelines, the fluids are cooled by the surrounding water. Many crude oils contain substantial amounts of wax molecules, and if the temperature of the fluids drops below the Wax Appearance ... -
Wayfaring in the Biomedical Sector: A Call for Re-Introducing the Toolmaker
(Doctoral theses at NTNU;2018:403, Doctoral thesis, 2018)This thesis aims to provide an understanding of the Why? and How? of a modern toolmaker, specifically within the biomedical sector, on a theoret- ical and practical level and what their role is within a product development ... -
Wayfinding in Virtual Environments
(Master thesis, 2020)Navigasjonsoppgaver er en viktig del av folks hverdag. Når man skal til skole og jobb, eller reiser til nye steder er navigasjon nødvendig. Til tross for at folk er vant til dette konseptet i den virkelige verden, er ... -
A weak-scatterer potential flow theory-based model for the hydroelastic analysis of offshore wind turbine substructures
(Peer reviewed; Journal article, 2021)This paper examines the hydroelastic response of a monopile structure, supporting an offshore wind turbine. A new numerical simulation tool is presented, coupling a nonlinear potential flow solver to a structural model ...