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Abstract |
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Utilization of natural energy is a most important research area even for sailing ships in the ocean.We propose a new wave power utilization device,wave devouring propulsion system(WDPS),which is a thrust generator of a ship and is also used as a motion stabilizer.The WDPS converts wave energy directly into trust and efficiently reduces the hull motion in the waves. In 2000,experimental results of a newly designed dual fin type WDPS and hydrodynamic wave forces acting on the foils were presented by the author.In the previous discussion of WDPS,which is related to the mechanism of thrust generation of a single hydrofoil located at the incident waves,the heading sea condition is more suitable than any another wave direction.But the newly developed WDPS test shows that the fastest speed is achieved with a beam sea condition.The theoretical analysis of the effect of WDPS is shown in this paper. |
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