1710 動翼可変軸流ファンにおける旋回失速発生過程と動翼設計パラメータとの相関(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

論文の詳細を見る
Numerical and experimental studies were carried out to clarify the flow mechanism behind stall inception at three stagger-angle settings for the rotor blades of a variable-pitch axial-flow fan. When a short length-scale stall cell was observed, tip-leakage vortex breakdown occurred, and a three-dimensional separation vortex developed When a long length-scale stall cell was observed without the short length-scale stall cell, this breakdown also occurred, but the separation vortex did not develop. When a modal disturbance was observed, a separation vortex developed, but the tip-leakage vortex breakdown did not occur. The numerical and experimental results show that the diffusion factor and attack angle at the rotor tip were the aerodynamic parameters that influenced the change in the tip-leakage vortex and the development of the tree-dimensional separation vortex.
社団法人日本機械学会の論文
2008-08-02