CAJ | 학술논문

为研究叶片在不同攻角下引起的气流分离对叶栅出口气流紊流度的影响，借助动态压力测量设备和测试技术，完成了某扩压平面叶栅在进口马赫数为0.677，攻角分别为0°、-10°和+8°三种典型工况下，尾迹非定常流动的测量。通过测量尾迹区域沿栅距方向和轴向的尾迹动态压力，并对动态压力数据进行时域分析，得到叶栅尾迹非定常流动的时均总压和压力脉动云图，揭示出尾迹区流动过程，同时还与叶栅的气动性能和气流稳定性进行了关联。
위연구협편재불동공각하인기적기류분리대협책출구기류문류도적영향，차조동태압력측량설비화측시기술，완성료모확압평면협책재진구마혁수위0.677，공각분별위0°、-10°화+8°삼충전형공황하，미적비정상류동적측량。통과측량미적구역연책거방향화축향적미적동태압력，병대동태압력수거진행시역분석，득도협책미적비정상류동적시균총압화압력맥동운도，게시출미적구류동과정，동시환여협책적기동성능화기류은정성진행료관련。
Using dynamic pressure measuring equipment and technology, dynamic pressure in the wake re?gion of plane compressor cascade under the incidence of 0°,-10°,+8° with 0.677 inlet Mach number was measured to study the impact of flow separation on cascade outlet flow turbulence. Pressure measured in the tangential direction and axial direction was processed in time-domain analysis. Dimensionless time average total pressure and pressure fluctuation contour were obtained through the process. Flow structure in the wake region was revealed and related to aerodynamic characteristics and flow stability.