Blar i NTNU Open på forfatter "Lubbad, Raed"
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A large scale simulation of floe-ice fractures and validation against full-scale scenario
Lu, Wenjun; Heyn, Hans-Martin; Lubbad, Raed; Løset, Sveinung (Journal article; Peer reviewed, 2018)While interacting with a sloping structure, an ice floe may fracture in different patterns. For example, it can be local bending failure or global splitting failure depending on the contact properties, geometry and confinement ... -
An implicit time-stepping scheme and an improved contact model for ice-structure interaction simulations
van den Berg, Marnix; Lubbad, Raed; Løset, Sveinung (Journal article; Peer reviewed, 2018)This paper presents a novel time-stepping scheme for the modelling of discrete ice-structure interaction. The scheme extends the non-smooth discrete element modelling (NDEM) technique to enable compliant continuous and ... -
An overview of the Oden Arctic Technology Research Cruise 2015 (OATRC2015) and numerical simulations performed with SAMS driven by data collected during the cruise
Lubbad, Raed; Løset, Sveinung; Lu, Wenjun; Tsarau, Andrei; van den Berg, Marnix (Journal article; Peer reviewed, 2018)In the autumn of 2015, the Norwegian University of Science and Technology (NTNU) and the Swedish Polar Research Secretariat (SPRS) performed a research cruise named the “Oden Arctic Technology Research Cruise 2015” ... -
Assessment of Impact of Dredging on Sediment Transport at Borg Port
Bengtson, Maren Elise (Master thesis, 2019)Målet for denne masteroppgaven har vært å modellere hvordan sedimenter spres under mudringsoperasjoner. En numerisk modell for et utvalgt prosjekt, Borg Havns planlagte mudringsprosjekt, er blitt utarbeidet ved å bruke ... -
Coastal Erosion Modelling in Hiorthhamn, Longyearbyen (Svalbard)
Antonello, Carlo (Master thesis, 2022)Kyst erosjon i Arktis er et pågående fenomen som representerer et relevant ingeniøremne for dets sosiale og miljømessige implikasjoner. Det er resultatet av flere prosesser som er veldig avhengige av de lokale innstillingene ... -
Dynamic bending of an ice wedge resting on a winkler-type elastic foundation
Kim, Jeonghwan; Lu, Wenjun; Lubbad, Raed; Løset, Sveinung; Jang, Beom-Seon (Journal article; Peer reviewed, 2022)For most ice – sloping structure interactions, the incoming ice floes' failures are determined by the formation of circumferential cracks. This physical process can be simplified as analyzing the bending failure of an ice ... -
Experimental Investigation of an Inclined, Floating Breakwater with a Porous design and Bio-enhancing features
Hjertnes Nygaard, Erik (Master thesis, 2022)Verden går i møte risikoer ved den globale oppvarmingen som er betydelig større enn det som tidligere er beskrevet, herunder økning av sjønivå og ekstreme værfenomener. Klimaendringene har også medført betydelige og ... -
Exploring time-delay-based numerical differentiation using principal component analysis
Li, Hongtao; Gedikli, Ersegun Deniz; Lubbad, Raed (Peer reviewed; Journal article, 2020)Natural systems, including the dynamics of engineered structures, are often considered complex; hence, engineers employ different statistical methods to understand these systems better. Analyzing these systems usually ... -
Glacial ice impacts: Part I: Wave-driven motion and small glacial ice feature impacts
Lu, Wenjun; Amdahl, Jørgen; Lubbad, Raed; Yu, Zhaolong; Løset, Sveinung (Peer reviewed; Journal article, 2021)Glacial ice features in the northern and central Barents Sea may threaten ships and offshore structures. Particularly, small glacial ice features, which are difficult to detect and manage by concurrent technologies, are ... -
Laboratory study of ice floes collisions under wave action
Li, Hongtao; Lubbad, Raed (Journal article; Peer reviewed, 2018)This paper examines the experimental data on ice floes collisions from the HYDRALAB+ Transnational Access project: Loads on Structure and Waves in Ice (LS-WICE). The paper quantifies the contribution from ice-floes collisions ... -
Laboratory study of wave-induced flexural motion of ice floes
Li, Hongtao; Gedikli, Ersegun Deniz; Lubbad, Raed (Peer reviewed; Journal article, 2021)Wave-ice interactions involve complex physical processes. Well-designed laboratory investigations are indispensable for studying these processes. In the present study, laboratory experimental data on saline ice obtained ... -
Measurements and Modelling of Arctic Coastal Environments
Monteban, Dennis (Doctoral theses at NTNU;2020:213, Doctoral thesis, 2020)The most pronounced effects of climate change are observed in the polar regions, especially in the Arctic, which is currently warming more rapidly than the rest of the world. The Arctic is losing sea ice, and the oceans ... -
Modelling the seasonal variations of soil temperatures in the Arctic coasts
Islam, Mohammad Akhsanul; Lubbad, Raed; Ghoreishian Amiri, Seyed Ali; Isaev, Vladislav; Shevchuk, Yaroslav; Uvarova, Alexandra Vladimirovna; Afzal, Mohammad Saud; Kumar, Avinash (Peer reviewed; Journal article, 2021)The soil temperature within the Arctic coasts within the continuous permafrost is not widely measured; the temporal and spatial resolutions of the measured temperature observations are relatively high. In this study, we ... -
A numerical model for the simulation of oil-ice interaction
Abbasi, Hosseinreza; Lubbad, Raed (Peer reviewed; Journal article, 2021)Accurate modeling of the interaction between oil and sea ice is essential for predicting oil spill fate and transport in ice-infested waters. A three-dimensional numerical model based on the smoothed particle hydrodynamics ... -
Parallel channels' fracturing mechanism during ice management operations. Part I: Theory
Lu, Wenjun; Lubbad, Raed; Shestov, Aleksey; Løset, Sveinung (Journal article; Peer reviewed, 2018)It is frequently observed that long cracks in sea-ice tend to form between parallel channels during ice management operations. The long cracks that develop play an important role in reducing the size of the managed ice ... -
Parallel channels' fracturing mechanism during ice management operations. Part II: Experiment
Lu, Wenjun; Lubbad, Raed; Løset, Sveinung (Journal article; Peer reviewed, 2018)During ice management operations, cutting parallel channels with narrow spacing in the ice using icebreakers can effectively reduce the size of ice floes reaching the protected vessel/structure. A narrow channel spacing ... -
Performance Quantification of Icebreaker Operations in Ice Management by Numerical Simulations
Bjørnø, Jon; Skjetne, Roger; van den Berg, Marnix; Lu, Wenjun; Lubbad, Raed; Løset, Sveinung (Peer reviewed; Journal article, 2021)The paper addresses the problem of quantifying and assessing the effectiveness of icebreaker operations in ice management (IM) using a high-fidelity simulator. The numerical model includes an accurate geometric representation ... -
Physical Model Study of Living Breakwaters: Effect of shape, placement and density of green-grey hybrid structures for shoreline protection
Inden, Markus (Master thesis, 2023)Denne masteroppgaven undersøker muligheten for en grønngrå hybridstrukturløsning som et klimatiltak. Konseptet består av en eksisterende molostruktur forsterket med kunstige rev (AR) som tåelementer. Fysiske modelltester ... -
A probabilistic model of coastal bluff-top erosion in high latitudes due to thermoabrasion: A case study from Baydaratskaya Bay in the Kara Sea
Islam, Mohammad Akhsanul; Lubbad, Raed; Afzal, Mohammad Saud (Peer reviewed; Journal article, 2020)Arctic coastal erosion demands more attention as the global climate continues to change. Unlike those along low-latitude and mid-latitude, sediments along Arctic coastlines are often frozen, even during summer. Thermal and ... -
A Process-Based Model for Arctic Coastal Erosion Driven by Thermodenudation and Thermoabrasion Combined and including Nearshore Morphodynamics
Islam, Mohammad Akhsanul; Lubbad, Raed (Peer reviewed; Journal article, 2022)Various models have recently been developed to describe Arctic coastal erosion. Current process-based models simulate multiple physical processes and combine them interactively to resemble the unique mechanism of Arctic ...