#Orcaflex oc4 semi sub full#
Simulation results from full 3D simulation will be compared to the results from Morison s equation. The next step is the presentation of 3D multiphase RANS simulation of the wind-turbine platform in single-harmonic regular waves. The fluid particles orbit and kinematics at strip wise depth are readily derived from wave theory, and the total wave force on the supporting structure is computed by performing a simple integration in the vertical direction over each section. Wave forces on a simple structure, such as a bottom mounted monopile, are estimated by a strip wise application of Morison s equation on each section. The first step of this study focuses on the application of Morison s equations for computing forces on a 3D platform using both computational fluid dynamics computed and empirical coefficients. Coefficients are required for these models and are typically derived from wave-tank or pulsatile U-Shaped water tunnel experiments. The most common is the Morison s equation which accounts for unsteady drag and inertial forces created by incident waves. NREL s HydroDyn and Orcina s OrcaFlex) use simplified theories and empirical models. Engineering simulation tools for hydrodynamic loads on offshore platforms (e.g. Paterson 1,b 1 Virginia Polytechnic Institute and State University, Blacksburg, Virginia, 24060, USA Abstract.
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1 E3S Web of Conferences 5, ( 2015) DOI: / e3sconf/ C Owned by the authors, published by EDP Sciences, 2015 A study of wave forces on an offshore platform by direct CFD and Morison equation D.