B-1 圧縮機翼列翼先端漏れ流れに関する研究 : ハーフシュラウドの効果(空力,一般講演)

概要

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This paper deals with a partially shrouded (half shroud) blade tip for restraining leakage flow. In this experiment, a plate imitating half shroud was installed at the tip of a linear cascade composed of seven blades in order to investigate the flow field and leakage mechanism around the blade tip. The motion of the blade relative to the casing is simulated through a moving belt running at a constant speed. Traverse measurements were taken in the pitch-wise and span-wide directions using a five-hole Pitot tube. The results showed that the half-shroud could effectively reduce the loss of the tip region with a running moving belt. Internal flow of the cascade was also investigated in detail with CFD.
2011-07-06