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Nonlinear Wave Forces on an Offshore Wind Turbine Foundation in Shallow Waters
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 Title & Authors
Nonlinear Wave Forces on an Offshore Wind Turbine Foundation in Shallow Waters
Choi, Sung-Jin; Lee, Kwang-Ho; Hong, Keyyoung; Shin, Seong-Ho; Gudmestad, O.T.;
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 Abstract
In this study, a 3D numerical model was used to predict nonlinear wave forces on a cylindrical pile installed in a shallow water region. The model was based on solving the viscous and incompressible Navier-Stokes equations for a two-phase flow (water and air) model and the volume of fluid method for treating the free surface of water. A new application was developed based on the cut-cell method to allow easy installation of complicated obstacles (e.g., bottom geometry and cylindrical pile) in a computational domain. Free-surface elevation, water particle velocities, and inline wave forces were calculated, and the results show good agreement with experimental data obtained by the Danish Hydraulic Institute. The simulation results revealed that the proposed model can, without the use of empirical formulas (i.e., Morison equation) and additional wave analysis models, reliably predict non-linear wave forces on an offshore wind turbine foundation installed in a shallow water region.
 Keywords
3D numerical model;Nonlinear wave force;Cylindrical pile;Volume of fluid method;Cut-cell method;
 Language
English
 Cited by
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2.
The effect of dynamic amplification due to a structure׳s vibration on breaking wave impact, Ocean Engineering, 2015, 96, 8  crossref(new windwow)
3.
Analysis of unsteady flow over Offshore Wind Turbine in combination with different types of foundations, Journal of Marine Science and Application, 2017, 16, 2, 199  crossref(new windwow)
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