1738 三段軸流圧縮機における旋回失速の突入過程(S33-3 送風機・圧縮機,S33 流体機械の諸問題)

概要

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The observation of several Pre-stall behavior patterns in a three-stage axial flow compressor is presented. The research compressor could change the stagger angle settings for rotor and stator blades. Experiments are carried out at two different stagger angle settings for rotor blades, and at each stagger angle setting, 64 patterns of experiments by changing each stage stagger angle for stator blades are conducted. The experimental results show that the rotating stall inception patterns were concerned with rotor and stator stagger settings, and spike and modal stall inception patterns and the number of rotating stall cell were deeply influenced by the inlet flow angle. Also a unique stall warning index, based on pressure signals by high response transducers on the casing wall at the rotor leading edge location, is proposed which indicates good reaction to every rotating stall inception patterns.
2007-09-07