CAJ | 학술논문

基于小型轴流压气机实验台,运用热线风速仪(HWA),对不同转速、流量工况下,静叶排出口尾迹流动特性进行实验研究.对同一工况下尾迹区时均速度及湍流度分布规律的研究表明:受前排动叶的影响,静叶排不同叶展截面处尾迹大小、尾迹中心位置存在着明显差异;沿展向叶根、叶尖附近湍流度明显高于主流区.同时,还对不同工况下静叶排尾迹区各统计参数的变化规律进行了研究,较为系统地总结出轴流压气机工况变化对静叶排出口尾迹大小、尾迹中心位置、尾迹区湍流强度以及雷诺应力大小的影响.
기우소형축류압기궤실험태,운용열선풍속의(HWA),대불동전속、류량공황하,정협배출구미적류동특성진행실험연구.대동일공황하미적구시균속도급단류도분포규률적연구표명:수전배동협적영향,정협배불동협전절면처미적대소、미적중심위치존재착명현차이;연전향협근、협첨부근단류도명현고우주류구.동시,환대불동공황하정협배미적구각통계삼수적변화규률진행료연구,교위계통지총결출축류압기궤공황변화대정협배출구미적대소、미적중심위치、미적구단류강도이급뢰낙응력대소적영향.
An experimental study of the stator blade wake in a small axial compressor is performed by using a hot-wire anemometer (HWA) under different rotating speeds and mass flow conditions. The mean velocity and turbulence intensity distribution among the stator blade wake region under the same operating condition indi-cate that the size of the wake region and the position of the wake core vary at different span sections owing to the effect of the upstream rotor blades. The turbulence intensity is significantly higher near the hub and shroud than in the main flow field. A study of the variation of the statistical parameters under different operation con-ditions reveals systematically the influence of the changing operating conditions of the axial compressor on wake-region size, wake-core position, turbulence intensity and Reynolds stresses.