期刊
OCEAN ENGINEERING
卷 290, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.oceaneng.2023.116321
关键词
Ship motions; High-fidelity; Low-fidelity; Reduced-order; Hydrodynamic and FKHS forces; Added mass; Damping (penalized) regressions
This study addresses the problem of obtaining forces for lower-fidelity models by regressing forces from higher-fidelity models, and provides numerical simulations for verification.
Lower-fidelity or reduced-order models based on constant coefficient ordinary differential equations provide computationally efficient means to generate ship motions. In these models, forces acting on a ship are typically approximated through closed-form expressions involving fixed coefficients that need to be set for the wave and operational conditions of interest. Here, this problem is addressed through the regressions of forces from higher-fidelity, for example, potential flow-based, solvers, that the lower-fidelity models aim to emulate. Numerical simulations are provided to illustrate the considered approach.
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