Title
Numerical study of hydrodynamic forces and dynamic response for barge type floating platform by computational fluid dynamics and engineering model
Author
Otori, Hiromasa (University of Tokyo)
Kikuchi, Yuka (University of Tokyo)
Rivera Arreba, I. (Norwegian University of Science and Technology (NTNU))
Viré, A.C. (TU Delft Wind Energy) 
Date
2023
Abstract
The hydrodynamic coefficients are evaluated by fully nonlinear Navier-Stokes forced oscillation simulations using the volume of fluid method. Richardson extrapolation is employed to obtain the grid-independent solution. The predicted hydrodynamic coefficients are validated by the water tank tests. The applicability of the drag coefficient models as the function of Keulegan-Carpenter numbers in the surge and heave directions are investigated for the barge-type floater by comparing with the numerically predicted drag coefficients. The dynamic response analyses are then conducted using the engineering model with the validated drag coefficient models. The predicted mean values of surge and mooring tension without considering drag forces underestimate the measurements in the high wave height condition, where those with considering drag forces show good agreement, which is analytically explained by the mean drag force being inversely proportional to the square of wave period and proportional to the cube of wave height. Dynamic responses of floater predicted without considering drag forces caused overestimation at the natural frequencies in the heave and pitch directions, while those considering drag forces show good agreement with the measurements.
Subject
Barge-type platform
Computational fluid dynamics
Drag force
Dynamic analysis
Richardson extrapolation
To reference this document use:
http://resolver.tudelft.nl/uuid:ff2129b6-a1fa-47b2-a908-1b1b5405115f
DOI
https://doi.org/10.1016/j.oceaneng.2023.115100
Embargo date
2024-01-04
ISSN
0029-8018
Source
Ocean Engineering, 284
Bibliographical note
Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.
Part of collection
Institutional Repository
Document type
journal article
Rights
© 2023 Hiromasa Otori, Yuka Kikuchi, I. Rivera Arreba, A.C. Viré