... due to the long calculation time. the stern wave. In the CFD wave profile in Figure 3, it is shown Simulation programs based on strip theory are capable of longer the wave profile of the bare hull at Fn 0.4 (17.2 kn), comparing runs in the time domain program. In the frequency domain, the bare hull...

... vent valve auestad full-scale performance ses-mc se motion control system frequency vertical motion mandal turbine excitation force air cushion pressure bow tip control system gravdahl information surface effect ship cushion pressure full-scale performance Full-scale...

... characteristics of lightweight lifting bodies in water. The results show that the in-water to in-air natural frequency ratios decrease rapidly as the structure becomes lighter, and the natural frequencies become mode and speed dependent due to changes in the fluid added mass, damping, and disturbing force terms...

..., and disturbing force components, and only predicts the primary oscillation frequency. In addition to predicting the unsteady loads, when coupled with the solid equations of motion, the ROM can also be used to calculate the natural resonance frequencies and damping characteristics with consideration for viscous...