第一種ウェーブレス船型の実用化に関する研究
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概要
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Three kinds of `Waveless Form theory are at present schemed at the ship model basin of University of Tokyo. The first one is the theory that waveless hull may be given by using bulb to the simplified main hull, while the second one is the theory that the least wave making condition will be realized by the complicate wave interference due to complicate hull geometry. The last one is the combined idea of the above-saying two theories.As the result of the basic research concerning to the theory of the first kind, the hull form with the bulb of the smallest size and of the least projection outward from the main hull has been strongly desired for practical application from the structural and the operative point of view.After discussing the possibility of these desires, experiments are made to assure using mathematical hull forms (named U-series models), of which source distribution is uniform for draftwise direction. However these U-series models have more or less curved bottoms, so further experiments are needed to verify that the waveless form could be realized even with a conventional flat bottom hull. On the other hand the wavemaking effect of the lower part near the midship is believed to be comparatively small. Therefore the authors adopted UF-series models to examine for flat bottom hulls, cutting off artificially the bottom of U-series models.Further approximate approach is required for such a shallow draft ship as a coaster or a ferry boat. As an example, the SEIKAN-ferry boat is served for further approximation, only keeping the load waterline of fore-half body exactly the same as given by the stream-line calculation of planned source distribution.
- 社団法人日本船舶海洋工学会の論文