2023 Fiscal Year Annual Research Report
Multiphysics modelling and experimental verification of a suspension ship running at head seas
| Project/Area Number |
21K14363
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| Research Institution | Yokohama National University |
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Principal Investigator |
韓 佳琳 横浜国立大学, 大学院工学研究院, 助教 (40814877)
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| Project Period (FY) |
2021-04-01 – 2024-03-31
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| Keywords | suspension ship / motion control / model experiment / ride comfort / hydrodynamics / catamaran / ship design / numeical analysis |
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| Outline of Annual Research Achievements |
The motion responses of a suspension ship in head waves were investigated through numerical calculation and experimental validation. Hydrodynamic coefficients and wave-exciting forces/moments were determined using OrcaWave. A method was proposed to estimate wave-exciting forces/moments at advancing speeds based on those at zero speed. Motion responses were analyzed across various damping coefficients and spring constants. Results reveal that tuning only the spring constant or damping coefficient offers limited reduction in cabin motion, necessitating different pairs of these parameters for distinct wave encounter frequencies. Study on stability highlights the challenge of achieving adequate initial transverse stability with a fully suspended cabin in a monohull compared to a catamaran.
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