二段直列Weis-Fogh型船舶推進機構 : モデルとその特性の特異点法による解析

概要

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A model of a ship's propulsion mechanism is proposed, in which two-series flat wings are arranged in a square channel. The motion of each wing is the same as that of the single-stage model previously proposed by the same authors. The analysis is performed by assuming that the flow is a potential flow and approximating the wings by bounded vortices. The unsteady forces and moment are estimated by using the multi-valuedness of the complex potential. The effects of the configurations of the two wings, such as the phase difference of their motions and the distance between them, on the thrust, the drag, and the moment coefficients are examined for various flow velocities. However, it has become clear that a more detailed study will be needed on the Weis-Fogh effect between the blades of the rotor and stator suggested by Furber and Ffowcs Williams.
一般社団法人日本機械学会の論文
1987-12-25