Browsing NTNU Open by Author "Wang, Weizhi"
Now showing items 1-20 of 32
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Application of Arbitrary Lagrangian-Eulerian Strips with Fully Nonlinear Wave Kinematics for Force Estimation
Pakozdi, Csaba; Kamath, Arun; Wang, Weizhi; Bihs, Hans (Journal article; Peer reviewed, 2022)The initial design of offshore constructions generally uses a combination of model tests and second-order wave theory to reconstruct the wave kinematics to determine wave forces using the Morison equation. This routine ... -
CFD Simulations of Multi-Directional Irregular Wave Interaction With a Large Cylinder
Wang, Weizhi; Kamath, Arun; Bihs, Hans (Chapter, 2018)Ocean waves are random by nature and can be regarded as a superposition of a finite number of regular waves travelling in different directions with different frequencies and phases. Cylinder-shaped objects are commonly ... -
A comparison of different wave modelling techniques in an open-source hydrodynamic framework
Wang, Weizhi; Kamath, Arun; Pakozdi, Csaba; Bihs, Hans (Peer reviewed; Journal article, 2020)Modern design for marine and coastal activities places increasing focus on numerical simulations. Several numerical wave models have been developed in the past few decades with various techniques and assumptions. Those ... -
A direct forcing immersed boundary method for simulating floating objects
Soydan, Ahmet; Wang, Weizhi; Kamath, Arun; Bihs, Hans (Chapter, 2022)For ship and offshore applications, the fluid-floating object interaction is of particular importance and accurate numerical calculations are required. However, low-order accurate methods are not sufficient to have decent ... -
Efficient Calculation of Spatial and Temporal Evolution of Hydrodynamic Loads on Offshore Wind Substructures
Pakozdi, Csaba; Kamath, Arun; Wang, Weizhi; Martin, Tobias; Bihs, Hans (Chapter, 2021)Estimation of the hydrodynamic loads based on strip theory with the Morrison equation provides a fast and inexpensive method for load estimation for the offshore industry. The advantage of this approach is that it requires ... -
A Flexible Fully Nonlinear Potential Flow Model for Wave Propagation over the Complex Topography of the Norwegian Coast
Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Fouques, Sebastien; Bihs, Hans (Peer reviewed; Journal article, 2022)Coastal wave propagation and transformation are complicated due to the significant variations of water depth and irregular coastlines, which are typically present at the Norwegian fjords. A potential flow model provides ... -
Focused Plunging Breaking Waves Impact on Cylinder Group in Deep Water
Cui, Ting; Kamath, Arun; Wang, Weizhi; Yuan, Lihao; Han, Duanfeng; Bihs, Hans (Chapter, 2021)The correct estimation of wave loading on a cylinder in a cylinder group under different impact scenarios is essential to determine the structural safety of coastal and offshore structures. This scenario differs from the ... -
Focused Plunging Breaking Waves Impact on Pile Group in Finite Water Depth
Cui, Ting; Kamath, Arun; Wang, Weizhi; Yuan, Lihao; Han, Duanfeng; Bihs, Hans (Peer reviewed; Journal article, 2022)Accuracy estimation of wave loading on cylinders in a pile group under different impact scenarios is essential for both the structural safety and cost of coastal and offshore structures. Differing from the interaction of ... -
Fully nonlinear phase-resolved wave modelling in the Norwegian fjords for floating bridges along the E39 coastal highway
Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Bihs, Hans (Journal article; Peer reviewed, 2023)Coastal wave conditions are highly influenced by bathymetry variations and coastlines. The Norwegian fjords present large gradients of bathymetry changes and irregular coastline geometries that make the understanding of ... -
A fully nonlinear potential flow wave modelling procedure for simulations of offshore sea states with various wave breaking scenarios
Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Bihs, Hans (Peer reviewed; Journal article, 2021)An accurate representation of a given sea state is crucial for the study of hydrodynamic loads on offshore structures. It is straightforward to check the quality of the reproduced regular waves in a numerical wave tank ... -
High-efficiency wind-farm-scale wave force estimation for preliminary design of offshore wind installations
Wang, Weizhi; Kamath, Arun; Pakozdi, Csaba; Bihs, Hans (Chapter, 2022)Many coastal wind farms are subject to a complex hydrodynamic environment due to bathymetry variations and irregular coastlines. The wave height statistical information does not linearly correlate to the wave loads on wind ... -
High-Fidelity Representation of Three-Hour Offshore Short-Crested Wave Field in the Fully Nonlinear Potential Flow Model REEF3D::FNPF
Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Bihs, Hans (Chapter, 2020)Stochastic wave properties are crucial for the design of offshore structures. Short-crested seas are commonly seen at the sites of offshore structures, especially during storm events. A long time duration is required in ... -
Hydrodynamic Coupling of Viscous and Non-Viscous Numerical Wave Solutions Within the Open-Source Hydrodynamics Framework REEF3D
Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Martin, Tobias; Bihs, Hans (Chapter, 2021)A comprehensive understanding of the marine environment in the offshore area requires phase-resolved wave information. For the far-field wave propagation, computational efficiency is crucial, as large spatial and temporal ... -
Hydrodynamic Coupling of Viscous and Nonviscous Numerical Wave Solutions Within the Open-Source Hydrodynamics Framework REEF3D
Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Martin, Tobias; Bihs, Hans (Peer reviewed; Journal article, 2022)A comprehensive understanding of the marine environment in the offshore area requires phase-resolved wave information. For far-field wave propagation, computational efficiency is crucial, as large spatial and temporal ... -
An Improved Depth-Averaged Non-Hydrostatic Shallow Water Model with Quadratic Pressure Approximation
Wang, Weizhi; Martin, Tobias; Kamath, Arun; Bihs, Hans (Peer reviewed; Journal article, 2020)Phase‐resolved information is necessary for many coastal wave problems, for example, for the wave conditions in the vicinity of harbor structures. Two‐dimensional (2D) depth‐averaging shallow water models are commonly used ... -
Investigation of Focusing Wave Properties in a Numerical Wave Tank with a Fully Nonlinear Potential Flow Model
Wang, Weizhi; Kamath, Arun; Pakozdi, Csaba; Bihs, Hans (Journal article; Peer reviewed, 2019)Nonlinear wave interactions and superpositions among the different wave components and wave groups in a random sea sometimes produce rogue waves with extremely large wave heights that appear unexpectedly. A good understanding ... -
Large scale cfd modelling of wave propagation in Sulafjord for the E39 project
Wang, Weizhi; Bihs, Hans; Kamath, Arun; Arntsen, Øivind Asgeir (Chapter; Peer reviewed, 2017)The coastal high way project E39 aims at building a continuous ferry-free road connection along the west coast of Norway. One of the major challenges in the project is to replace ferries with new fjord-crossing methods ... -
Large Scale CFD Modelling of Wave Propagation into Mehamn Harbour
Wang, Weizhi; Bihs, Hans; Kamath, Arun; Arntsen, Øivind Asgeir (Chapter, 2017)Ocean wave propagations into harbours are large scale phenomena with complex wave transformations. Computational fluid dynamics (CFD) has the advantage of capturing most physics with few assumptions. It has also been ... -
Large-Scale Phase-Resolved Wave Modelling for the Norwegian Coast
Wang, Weizhi (Doctoral theses at NTNU;2020:235, Doctoral thesis, 2020)The coastal Highway Route E39 aims to build a continuous road connection along the west coast of Norway. Floating bridges are planned to replace the ferries at seven major fjords along the route. These innovative floating ... -
Multi-directional Irregular Wave Modelling with CFD
Wang, Weizhi; Bihs, Hans; Kamath, Arun; Arntsen, Øivind Asgeir (Chapter, 2019)The design of coastal structures requires accurate simulations of the wave conditions. Computational fluid dynamics (CFD) captures most complexities of the wave physics with few assumptions and therefore is considered to ...