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Water Entry of Freefall Wedges-Wedge Motions and Cavity Dynamics
(Doktoravhandlinger ved NTNU, 1503-8181; 2014:144, Doctoral thesis, 2014)When a free falling object enters a free surface of water, it may go through four successive phases: impact, flow separation from the body surface, creation and pinch-off of the cavity above the body, and oscillation of ... -
Wave and Current Effects on Floating Fish Farms
(Journal article; Peer reviewed, 2018)The paper is partly a review on hydrodynamic and structural aspects of fish farms. In addition, new numerical results are presented on the stochastic behavior of bending stresses in the floater of a realistic net cage in ... -
Wave conditions encountered by ships—A report from a larger shipping company based on ERA5
(Peer reviewed; Journal article, 2021)This study reports about the wave conditions encountered by the fleet of Maersk Line. Herein, wave conditions refer to integral wave parameters in terms of significant wave height, zero-upcrossing period, and wave direction ... -
Wave Conditions for Offshore Wind Turbine Foundations in Intermediate Water Depths
(Master thesis, 2012)In this thesis, the effects on regular waves when propagating from deep to shallow water have been investigated, assuming linear wave theory. The effects of shoaling, refraction, reflection and diffraction have been studied. ... -
Wave dispersion in moderate channel turbulence
(Peer reviewed; Journal article, 2023)We study channel turbulence by interpreting its vorticity as a random sea of ocean wave packet analogues. In particular, we investigate the ocean-like properties of vortical packets applying stochastic methods developed ... -
Wave disturbance rejection for monopile offshore wind turbines
(Journal article; Peer reviewed, 2019)The dimensions of offshore wind turbine (OWT) support structures are governed by fatigue considerations. For 6‐ to 10‐MW OWTs, wave loads are often dominating in terms of fatigue utilization. The present work proposes a ... -
Wave induced effects on floaters of aquaculture plants
(Doctoral Theses at NTNU, 1503-8181; 2010:20, Doctoral thesis, 2010)The main objective of this work is to study wave loads on floaters of fish farms. Several incidents of major fish escapes due to structural collapse of fish farms in harsh weather have motivated this study, as a step towards ... -
Wave induced effects on floaters of aquaculture plants
(Doctoral Theses at NTNU, 1503-8181; 2010:20, Doctoral thesis, 2010)The main objective of this work is to study wave loads on floaters of fish farms. Several incidents of major fish escapes due to structural collapse of fish farms in harsh weather have motivated this study, as a step towards ... -
Wave induced motions of two ships advancing on parallel course
(Doktoravhandlinger ved NTNU, 1503-8181; 64, Doctoral thesis, 2002)Under way replenishment between two ships is a critical operation, and accidents have been reported. Hydrodynamic interaction between the hulls may influence the forces and the motions of the vessels, and both manoeuvring ... -
Wave inhomogeneities in a wave basin of constant water depth
(Journal article; Peer reviewed, 2023)Experimental testing of large marine structures in hydrodynamic laboratories requires an accurate reproduction of waves over a large area of the basin. However, with a uniform motion of the wavemaker, wave interactions ... -
Wave load compensation in DP control systems
(Master thesis, 2022)Denne masteroppgaven presenterer alternative metoder for bølgelastkompensasjon i dynamiske posisjonering (DP) av marine fartøy, der stabile og robuste konvensjonelle kontrollere med tilbakekopling vanligvis brukes. Slike ... -
Wave load effect analysis of a floating bridge in a fjord considering inhomogeneous wave conditions
(Journal article; Peer reviewed, 2018)When designing a floating bridge crossing a deep and wide fjord, a homogeneous wave field is usually assumed for simplicity. However, waves in fjords are commonly inhomogeneous, and hence the mentioned design practice ... -
Wave loads on decks of offshore structures in random seas
(Doktoravhandlinger ved NTNU, 1503-8181; 2012:163, Doctoral thesis, 2012) -
Wave Loads on Underwater Protection Covers
(Master thesis, 2011)Submerged structures in shallow water can be exposed to large hydrodynamic wave- and current forces. An estimate of the total external loads will be important for the design and robustness of the structures. The aim will ... -
Wave power statistics for sea states based on wind statistics
(Journal article; Peer reviewed, 2018)The paper addresses how the wave power for sea states can be assessed based on available wind statistics for an ocean area. Results using a simple analytical tool are exemplified for a Pierson–Moskowitz wave spectrum ... -
Wave Propulsion of Ships
(Doctoral thesis at NTNU;2015:16, Doctoral thesis, 2015)Propelling a boat forward by converting wave energy into propulsive thrust was first proposed in 1858 and first successfully done in practice in the 1890s - to the author's knowledge. Several experimenters have since ... -
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 ...