Blar i SINTEF Open på forfatter "Kamath, Arun"
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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 (Peer reviewed; Journal article, 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 ... -
A comparison of different wave modelling techniques in an open-source hydrodynamic framework
Wang, Weizhi; Kamath, Arun; Pakozdi, Csaba; Bihs, Hans (Journal article; Peer reviewed, 2020-07-16)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 ... -
Efficient Wave Modeling Using Non-Hydrostatic Pressure Distribution and Free Surface Tracking on Fixed Grids
Bihs, Hans; Kamath, Arun; Aggarwal, Ankit; Pakozdi, Csaba (ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering;Volume 2: CFD and FSI;OMAE2018-78158, Chapter, 2018-06-25)For the estimation of wave loads on offshore structures, relevant extreme wave events need to be identified. In order to achieve this, long term wave simulations of relatively large scales need to be performed. Computational ... -
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 ... -
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 (Peer reviewed; Journal article, 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 ... -
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 (Journal article; Peer reviewed, 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 ... -
Influence of the upstream cylinder and wave breaking point on the breaking wave forces on the downstream cylinder
Kamath, Arun; Alagan Chella, Mayilvahanan; Bihs, Hans; Arntsen, Øivind A. (SINTEF Proceedings;2, Chapter; Conference object; Peer reviewed, 2017)The interaction of breaking waves with marine structures involves complex free surface deformation and instantaneous loading on the structural members. A typical offshore platform or a coastal structure consists of ... -
Investigation of Higher-Harmonic Wave Forces and Ringing Using CFD Simulations
Kamath, Arun; Bihs, Hans; Pakozdi, Csaba (ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering;Volume 7B: Ocean Engineering;OMAE2018-77925, Chapter, 2018-06-25)Typical offshore structures are designed as tension-leg platforms or gravity based structures with cylindrical substructures. The interaction of waves with the vertical cylinders in high sea states can result in a resonant ... -
Reduction of the wave propagation error of a sigma grid based numerical tank using a vertical spacing based on the constant truncation error
Pakozdi, Csaba; Wang, Weizhi; Kamath, Arun; Bihs, Hans (Peer reviewed; Journal article, 2021) -
REEF3D Wave Generation Interface for Commercial Computational Fluid Dynamics Codes
Pakozdi, Csaba; Bihs, Hans; Kamath, Arun (Peer reviewed; Journal article, 2021)In recent years, computational fluid dynamics (CFD) developments have shown a trend to combine Reynolds-averaged Navier–Stokes (RANS) CFD simulation with other methods such as wave theories or velocity potential-based ... -
Representation of 3-h Offshore Short-Crested Wave Field in the Fully Nonlinear Potential Flow Model REEF3D::FNPF
Wang, Weizhi; Pakozdi, Csaba; Kamath, Arun; Bihs, Hans (Journal article; Peer reviewed, 2022)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 ...