回転式Weis-Fogh形ポンプの渦糸近似法を用いた特性解析

概要

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A numerical analysis is performed for a rotary pump using the Weis-Fogh mechanism, which is a lift-generation mechanism in the hovering flight of small insects. Two-dimensional flow past a rotor in a square channel is investigated by the discrete vortex method. Distribution of vortices shed from each wing of the rotor and velocity vector fields are studied. Some patterns of forces on a wing of the rotor are also shown. As the ratio of the moving speed of the wings to the uniform flow velocity increases, the pressure rise behind the rotor increases. When the ratio is small, this model works as a water turbine. Results of this analysis are compared with those of the experiments, and the characteristics which differ from those of the reciprocal type are also considered.
社団法人日本機械学会の論文
1992-08-25