斜流形環状ディフューザの非軸対称流入時における性能線図と最適形状 : 流体工学,流体機械

概要

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One of the important factors affecting the diffuser performance is the shape of the inlet velocity profiles. Experiments have been performed systematically to investigate the performance for a wide range of mixed-flow-type conical walled annular diffusers having asymmetric uniform shear velocity profiles in the inlet core region except for a thin inlet boundary layer. The configuration of this type of diffusers consists of a circular inlet cross-sectional portion and conically diverging inner and outer walls having the same cone angle. Pressure recovery of diffusers reduces markedly with an increase in the inlet shear ratio. Systematic data on pressure recovery coefficients are presented comprehensively on the performance charts together with optimum geometry lines of diffusers both at constant diffuser length and at constant diverging area ratio for four degrees of the inlet shear ratio.
一般社団法人日本機械学会の論文
2001-07-25