二重圧縮機翼列における相互干渉の理論

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  • Theory of Mutual Interference in Tandem Compressor Cascade
  • ニジュウ アッシュクキヨクレツ ニ オケル ソウゴ カンショウ ノ リロン

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Two adjacent rows of blades, which constitute a tandem compressor cascade, interfere aerodynamically with each other, so that the deflection angle and losses are different from those of a system having no interference. In order to calculate the interference effect on cascade performance, a method must be found for calculating the change of flow field due to interference. This paper presents a theoretical method for determining the two-dimensional incompressible potential flow through an arbitrary tandem compressor cascade based on a singularity method. This theory is especially suitable for the case in which the relative position between the two blade rows varies, while the blade profiles and settings remain constant. Results of sample calculation are shown and compared with the corresponding experimental results.

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