1018 蒸気を直接の駆動源とする船舶推進装置に関する研究(GS-5 その他(1))

概要

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Today s transport systems are getting faster. The ship propulsion devices need changed itself. This study has proposed a new type of the nozzle that generates a high-speed two-phase water jet as a propulsion device for a ship. The high-pressure gas accelerates the two-phase jet by temporal and local pressure gradients; therefore, the principle of accelerating water flow is different from that of jet pump. Experimental and numerical studies are presented for improving the previously proposed ship propulsion device. Experimental work is performed by using a boiler. As a result, the thrust and propulsive efficiency increased by using steam, and it becomes higher by re-heating steam just before steam gets into the nozzle. We also simulate two-phase fluid flow in the nozzle by using Lattice Boltzmann Method(LBM). We confirmed that this method is applicable to the bubble flows in the nozzle.
社団法人日本機械学会の論文
2001-03-16