Browsing NTNU Open by Author "Bihs, Hans Sebastian"
Now showing items 1-17 of 17
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3D Numerical Modelling of Non-Linear and Breaking Wave Forces On Offshore Wind Turbine Substructures
Aggarwal, Ankit (Doctoral theses at NTNU;2019:66, Doctoral thesis, 2019)Offshore wind energy technology has experienced a remarkable growth in the last few decades due to an increasing focus towards renewable energy research. The objective of the research towards offshore wind energy is to ... -
3D Numerical Modelling of Sediment Transport under Current and Waves
Afzal, Mohammad Saud (Master thesis, 2013)The sediment transport module of REEF3D is used to calculate the scour and the deposition pattern for abutment, pier and contraction under constant discharge and for pier under waves. The time development of scour for all ... -
Calculation of wave forces due to extreme events in the coastal region using REEF3D - Beregning av bølgebelastninger fra ekstrem vær i kyst områder med REEF3D
Fernández Maza, Lluís (Master thesis, 2018)The objective of this study is to validate that the Computational Fluid Dynamics (CFD) model REEF3D can capture the singularities of the structure-wave interaction in coastal regions. The two tasks established to achieve ... -
Calculation of Wave Forces on Offshore Wind Turbine Jacket Sub-structures using REEF3D
Shirinov, Seimur (Master thesis, 2018)Throughout the thesis work, the literature on computational fluid dynamics is reviewed and governing equations of the REEF3D are studied. Two different laboratory experiment setups are replicated in the numerical wave tank. ... -
Calculation of Wave Forces on Structures using REEF3D
Kamath, Arun Mulky (Master thesis, 2012)Non-breaking wave forces on a cylindrical pile placed on a platform were calculated numerically by solving the 3D Navier Stokes equations in the Numerical Wave Tank of REEF3D. Initially, the numerical wave tank was validated ... -
CFD Simulation of Vortex Induced Vibration of a Cylindrical Structure
Asyikin, Muhammad Tedy (Master thesis, 2012)This thesis presents the investigation of the flow characteristic and vortex induced vibration (VIV) of a cylindrical structure due to the incompressible laminar and turbulent flow at Reynolds number 40, 100, 200 and 1000. ... -
Development of a Framework using Orthogonal Grids and Immersed Boundary Methods for Large Eddy Simulation of Indoor Airflows
Larkermani, Elyas (Doctoral theses at NTNU;2024:335, Doctoral thesis, 2024)Energy efficiency is regarded as a key measure to reduce greenhouse gas emissions and minimize the dependency on energy imports. In the European Union, building energy consumption, particularly in heating, represents a ... -
High-Resolution CFD Modelling of Scour in the Marine Environment
Ahmad, Nadeem (Doctoral theses at NTNU;2018:371, Doctoral thesis, 2018)Marine structures are vulnerable to scour under extreme weather conditions. Wave interaction with the structures leads to sediment transport locally. This results in the formation of scour holes which can affect the ... -
Investigation of wave transformation and breaking processes in the coastal zone using REEF3D
Elakel, Mohamed (Master thesis, 2018)Several human activities and industries that contribute in shaping the communities and economies around the world are located in the coastal zone. Therefore, it is very crucial to understand the behaviour of the coastal ... -
Modelling flood events in the Arno River and the interaction with the infrastructures in the city of Florence using REEF3D
Nuti, Niccolò (Master thesis, 2018)The first part of this work provides the numerical model overview including the governing equations, the turbulence model and the discretization methods. The second part describes the geographical position of Florence, its ... -
Multiscale modeling of wave propagation on the Norwegian Coast
Madrigal Sanchez, Alonso (Master thesis, 2018)Fjords coastlines are attributed to glaciers as the main agent of erosion. Thus, fjords are characterised by an irregular coastline configuration and rapid changes in their deep and steep slopes. These features generate a ... -
Numerical Modeling of Wave Hydrodynamics and Wave Interaction with Porous Structures with REEF3D
Sasikumar, Athul (Master thesis, 2016)In order to validate the wave hydrodynamics calculated in REEF3D, experiments will be carried out at the wave flume. The experiments will involve studying wave propagation and wave kinematics through the measurement of ... -
Numerical Modelling of Focussed Wave Hydrodynamics and Focused Wave-structure Interaction with REEF3D
Amarachaharam, Thevaher (Master thesis, 2016)General irregular sea state can generate very steep waves which can induce unpleasant dynamic wave loading to the structures. Sometimes these wave loads exceed upper design limits of the structure thus resulting in the ... -
Numerical Modelling of Wave Interaction with Floating structures and Moored Floating Structures
Mammadov, Tural (Master thesis, 2018)CFD model is new generation tool in design and engineering challenges. The thesis task was to use CFD model to perform validation of the 6DOF algorithm and the mooring model. The obtained results were successful. -
Numerical simulation and comparison with experiments of a floating wind turbine using a direct forcing method
Berthelsen, Petter Andreas; Thys, Maxime; Kamath, Arun Mulky; Martin, Tobias; Bihs, Hans Sebastian (Chapter, 2022)The open-source Computational Fluid Dynamic (CFD) code REEF3D is used to simulate the hydrodynamic loads and motion response of a floating wind turbine substructure, the INO WINDMOOR semisubmersible floating wind turbine. ... -
Simulation of floating bodies in waves using REEF3D
Zheng Lu, Jiayi (Master thesis, 2017)The aim of this thesis is the validation of the 6 degrees of freedom (DOF) algorithm implemented in REEF3D for floating bodies. The 6DOF of a free-floating structure are three displacements in each axis and three rotations ... -
Validation of Numerical Wave Tank Simulations Using REEF3D With JONSWAP Spectra in Intermediate Water Depth
Pakozdi, Csaba; Fouques, Sebastien; Thys, Maxime; Kamath, Arun Mulky; Wang, Weizhi; Hoseini Dadmarzi, Fatemeh; Bachynski, Erin Elizabeth; Bihs, Hans Sebastian (;Paper No: OMAE2020-18298, V001T01A012, Chapter, 2020)As offshore wind turbines increase in size and output, the support structures are also growing. More sophisticated assessment of the hydrodynamic loads is needed, particularly for the ultimate limit state design. For ...