1712 単段軸流タービンの動静翼列間隔による非定常効果(S19-2 流体機械に関連した流動現象とその解析・計測(2)不安定流動・非定常流動の計測と解析,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

概要

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This paper provides experimental investigations of unsteady flow behaviors in a single axial flow turbine stage with two axial gaps. The aim of this study is to clarify the effect of the axial gap on the unsteady flow field, where the 3-D unsteady flow field downstream of rotor blades is measured using a slant-type hot wire probe. Since the flow field is likely to be affected by the disk and tip cavity flow when the stator-rotor axial gap increased, the cavities on both hub side and casing side were kept constant (about 1 mm) by attaching several rings to openings of the cavities. In addition, we have compared time-averaged flow fields measured by a five-hole probe with unsteady experimental results.
社団法人日本機械学会の論文
2008-08-02