亜音速ディフューザの面積分布と中心線形状が空力性能に及ぼす影響(流体工学,流体機械)

概要

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The aerodynamic performance of subsonic diffusers has been investigated numerically in order to obtain the knowledge for the optimal design of subsonic diffusers. The area distribution, which is one of the parameters of the diffuser configuration, strongly affects on the aerodynamic performance because it is associated with the boundary layer development. It is found that the inflection point of the area distribution can correlate the pressure loss and there exists the optimal location of the inflection point of the area distribution. The optimal location of the inflection point was turned out to be shifted downstream in the case of subsonic diffusers with thick incoming boundary layer. In the case of diffusers of which the offset is enough large possibly to occur the boundary layer separation, the centerline configuration becomes an important design parameter to suppress the boundary layer separation.
一般社団法人日本機械学会の論文
2004-08-25