Browsing NTNU Open by Author "Høyland, Knut Vilhelm"
Now showing items 21-40 of 64
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Feasibility study of floating solar panels on a hydropower reservoir with winter ice.
Sanfeliu Moreno, Gonzalo (Master thesis, 2022)Dette prosjektet er gjort grunnet behovet for å øke produksjonen av fornybar energi i Norden. Siden solenergi er et av de enklere alternativene å gå for, søker selskapene etter en måte å installere solenergifarmer i områder ... -
Finite Element Simulations of Punch Tests on Ice Rubble with the Modified Cam Clay Model - Comparison of Full Scale and Model Scale Experiments
Nilsen, Hege Lindbjør (Master thesis, 2015)Ice ridges are features created by the relative motion between ice sheets, and appear as a pile up of broken ice or ice blocks both above (sail) and below the water surface (keel). First-year ice ridges are important in ... -
Finite Element Simulations of Unconsolidated Keel Actions from First-Year Ice Ridges. - A Comparison of a Numerical Model and Analytical Equations from ISO 19906:2010
Grevsgård, Sjur Moe (Master thesis, 2015)The thesis aimed for an assessment of the current standard for determination of the keel rubble actions from a first-year ice ridge. ISO 19906:2010 (2010) gives regulations for determination of these loads, based on the ... -
Freeze-bond strength experiments,: radially confined compression tests on saline and fresh water samples.
Bueide, Ida Mari (Master thesis, 2014)This thesis presents and analyses the method and results from strength experiments on freeze- bonds conducted on radially confined cylindrical samples (tri-axial tests). In total sixty samples were tested successfully, ... -
Ice and Ice Forces in Small Steep Rivers
Rødtang, Einar Albert (Doctoral theses at NTNU;2023:431, Doctoral thesis, 2023)English summary Given the right circumstances ice can wreak havoc on riverine infrastructure. Ice runs pushing ice floes against bridge piers is frequently the governing design condition for bridges in cold regions. The ... -
Ice drift and ice action on offshore wind farm structures
Gravesen, Helge; Jørgensen, Lars; Høyland, Knut Vilhelm; Bicker, Sven (Peer reviewed; Journal article, 2023)Development of offshore wind farms has so far been focused on areas without sea ice, but the increasing demand pushes the offshore wind industry into areas with seasonal sea ice, such as the Baltic Sea, the Great lakes and ... -
Ice rose diagrams for probabilistic characterization of the ice drift behavior in the Beaufort Sea
Sinsabvarodom, Chana; Chai, Wei; Leira, Bernt Johan; Høyland, Knut Vilhelm; Næss, Arvid (Journal article; Peer reviewed, 2022) -
Ice thickness estimates for design of structures
Høyland, Knut Vilhelm; Hornnes, Vegard; Salganik, Evgenii; Samardžija, Ilija (Peer reviewed; Journal article, 2023)The level ice thickness is perhaps the most important ice property in both engineering and geophysics. Ice action from level ice scales almost linearly with ice thickness and the level ice thickness gives the mode in ice ... -
Ice-induced vibrations of the Norströmsgrund lighthouse
Nord, Torodd Skjerve; Samardzija, Ilija; Hendrikse, Hayo; Bjerkås, Morten; Høyland, Knut Vilhelm; Li, Hongtao (Journal article; Peer reviewed, 2018)The signature and occurrence of frequency lock-in (FLI) vibrations of full-scale offshore structures are not well understood. Although several structures have experienced FLI, limited amounts of time histories of the ... -
Interfacial Study of Input Data in Dynamic Ice-Structure Interaction and Evaluation of Tactile Sensors Usability in Ice-Related Problems
Pedersen, Cathrine Yvonne (Master thesis, 2014)Tactile sensor recordings have been analyzed in time domain, frequency domain and visually to identify failure processes along a structural interface. Except for the pre-study to this thesis, there was not found anywhere ... -
Laboratory Measurements of Ice-Concrete Abrasion with Different Types of Ice Quality
Greaker, Nicolai Segaard (Master thesis, 2014)Ice-concrete abrasion has been investigated by review of lab- and field studies and by laboratory testing. The specific objective of this thesis has been to investigate the possible effects of different ice qualities on ... -
Laboratory tests to investigate the initial phase of ice ridge consolidation
Chen, Xiaodong; Høyland, Knut Vilhelm; Ji, Shunying (Peer reviewed; Journal article, 2020)During lake/sea ice ridging and river ice jamming, broken ice blocks experience transient heat conduction. In present work, this process is represented by submerging a cold fresh-ice block into fresh water at freezing ... -
Measurements and Simulations of Consolidation in First-Year Sea Ice Ridges, and some Aspects of Mechanical Behaviour
Høyland, Knut Vilhelm (Dr. ingeniøravhandling, 0809-103X; 2000:94, Doctoral thesis, 2000) -
Medium-scale consolidation of artificial ice ridge – Part I: surface temperature, thickness and mechanical properties
Salganik, Evgenii; Høyland, Knut Vilhelm; Shestov, Aleksey; Løset, Sveinung; Heijkoop, Anne-Niekolai (Journal article; Peer reviewed, 2019)This paper is describing preparations and methods of medium-scale ridge consolidation experiment and development of ridge and surrounding level ice morphological, thermal, and mechanical characteristics for the experiment, ... -
Medium-scale consolidation of artificial ice ridge – Part II: Fracture properties investigation by a splitting test
Lu, Wenjun; Shestov, Aleksey; Løset, Sveinung; Salganik, Evgenii; Høyland, Knut Vilhelm (Journal article; Peer reviewed, 2019)Sea ice’s fracture properties are in general difficult to measure and there is still on-going debate on the proper way to conduct valid measurements. Among many controversy fracture test conditions, the size of the test ... -
Medium-scale experiment in consolidation of an artificial sea ice ridge in Van Mijenfjorden, Svalbard
Salganik, Evgenii; Høyland, Knut Vilhelm; Shestov, Aleksey (Peer reviewed; Journal article, 2021)This study characterizes a consolidation of undeformed level ice and ice ridges. Field investigations were performed in the Van Mijenfjorden, Svalbard for 66 days between February and May of 2017. The thickness and properties ... -
Microstructural Investigation of Sea Ice and Imaging of Oil in Sea Ice by X-Ray micro-computed tomography
Salomon, Martina Lan (Doctoral theses at NTNU;2022:262, Doctoral thesis, 2022)The alarming decline of sea ice extent over the last few decades has made the polar marine region and its resources more accessible to humans. This has resulted in increased shipping and mining activities in this area which ... -
Numerical Modelling of Brittle Failure in Ice Structures
Nisja, Hanna Aarnes (Master thesis, 2014)The main purpose of this Master's thesis is to use finite element method to investigate if brittle failure in sea ice can be described in a force-displacement history. Four implemented material models in LS-Dyna are taken ... -
Observations of preferential summer melt of Arctic sea-ice ridge keels from repeated multibeam sonar surveys
Salganik, Evgenii; Lange, Benjamin Allen; Katlein, Christian; Matero, Ilkka; Anhaus, Philipp; Muilwijk, Morven; Høyland, Knut Vilhelm; Granskog, Mats (Peer reviewed; Journal article, 2023)Sea-ice ridges constitute a large fraction of the total Arctic sea-ice area (up to 40 %–50 %); nevertheless, they are the least studied part of the ice pack. Here we investigate sea-ice melt rates using rare, repeated ... -
On strain-rate dependent properties of model ice for simulating ice-induced vibrations
Granlund, Victor (Master thesis, 2021)The subject of ice-induced vibrations on bottom-founded vertically sided offshore structures has gained renewed interest with the growth of the offshore wind industry, stimulated by many nations committing to ambitious ...