傾斜曲がりディフューザ背面コーナー流れに関する研究(G05-9 流体機械(1),G05 流体工学部門一般講演)

概要

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In order to improve the flow condition around the corner between the suction surface and the sidewall of a two-dimensional curved diffuser, which simulates a passage of compressor blades cascade, effects of sidewall inclinations were investigated experimentally. The inclination angles studied were 0, 10, and 20 degrees. The effects were observed by means of static pressure-rise coefficients, visualized surface flow patterns by oil spot method, and total-pressure surveys downstream of the diffusers. Appearances of strong vortices in the acute-angle corner zone and resulting great pressure losses were made clear for inclination of 20 degrees. The most favorable condition of the diffuser was achieved for a sidewall inclination angle of 10 degrees.
社団法人日本機械学会の論文
2004-09-04