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http://dx.doi.org/10.1016/j.ijnaoe.2021.06.002

Numerical simulation of 2-D fluid-structure interaction with a tightly coupled solver and establishment of the mooring model  

Tsai, I-Chen (Department of Hydraulic and Ocean Engineering, National Cheng Kung University)
Li, Sing-Ya (Department of Hydraulic and Ocean Engineering, National Cheng Kung University)
Hsiao, Shih-Chun (Department of Hydraulic and Ocean Engineering, National Cheng Kung University)
Hsiao, Yu (Department of Hydraulic and Ocean Engineering, National Cheng Kung University)
Publication Information
International Journal of Naval Architecture and Ocean Engineering / v.13, no.1, 2021 , pp. 433-449 More about this Journal
Abstract
In this study, a newly enhanced Fluid-Structure Interaction (FSI) model which incorporates mooring lines was used to simulate a floating structure. The model has two parts: a Computational Fluid Dynamics (CFD) model and a mooring model. The open-source CFD OpenFOAM® v1712 toolbox was used in the present study, and the convergence criteria and relaxation method were added to the computational procedure used for the OpenFOAM multiphase flow solver, interDyMFoam. A newly enhanced, tightly coupled solver, CoupledinterDyMFoam, was used to decrease the artificial added mass effect, and the results were validated through a series of benchmark cases. The mooring model, based on the finite element method, was established in MATLAB® and was validated against a benchmark analytical elastic catenary solution and numerical results. Finally, a model which simulates a floating structure with mooring lines was successfully constructed by connecting the mooring model to CoupledinterDyMFoam.
Keywords
Fluid-structure interaction; Tightly coupled solver; Mooring model; OpenFOAM;
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