@inproceedings{dfe11e253cce45e8807f5d2181001803,
title = "Enhancing the Hydrodynamic Modeling of Spar-Type Floating Offshore Wind Turbines: Incorporating Vortex-Induced Vibrations in OpenFAST",
abstract = "Floating Offshore Wind Turbines (FOWTs) operate under complex environmental conditions, where unsteady hydrodynamic forces such as vortex-induced vibrations (VIV) can significantly influence structural response. However, conventional modeling approaches often neglect VIV effects, leading to underestimation of platform motion and hydrodynamic loading. This study incorporates a VIV-induced lift force model into the Morison equation framework within OpenFAST to assess its impact on the dynamic behavior of a spar-type FOWT under steady current conditions. Two simulation cases are compared: one assuming a stationary platform and the other allowing for platform motion through relative velocity coupling. Results show that VIV introduces multi-frequency oscillations in both hydrodynamic force and platform sway response, with amplitudes increasing with current speed. These findings focus on the importance of including VIV effects in hydrodynamic models for accurate prediction of FOWT behavior.",
keywords = "Floating offshore wind turbine (FOWT), hydrodynamic modeling, Morison equation, OpenFAST, vortex-induced vibrations (VIV)",
author = "Taeksang Kim and Jeongbin Park and Spence, {Seymour M.J.} and Yulin Pan and Ayumi Fujisaki-Manome and Bricker, {Jeremy David}",
year = "2025",
language = "English",
isbn = "9781880653746",
series = "Proceedings of the International Offshore and Polar Engineering Conference",
publisher = "International Society of Offshore and Polar Engineers (ISOPE)",
pages = "180--187",
editor = "Chung, {Jin S.} and Shiqiang Yan and Igor Buzin and Ivana Kubat and Lim, {Frank K} and Bor-Feng Peng and Ali Reza and Van, {Suak Ho} and Decheng Wan and Satoru Yamaguchi",
booktitle = "Proceedings of the 35th International Ocean and Polar Engineering Conference, 2025",
note = "35th Annual International Ocean and Polar Engineering Conference, ISOPE 2025 ; Conference date: 01-06-2025 Through 06-06-2025",
}