压气机弦向缝隙叶栅的气体动力学研究

就高负荷轴流式压气机弦向缝隙叶栅提出了确定弦向缝隙位置的数学模型 ,并给出了弦向缝隙叶栅流场计算的方法 ,作为分析这种叶栅气动性能的基础。风洞吹风试验表明了本模型的正确性及弦向缝隙叶栅对轴流式压气机气动性能的改善

AERODYNAMICS RESEARCH ON AXIAL COMPRESSOR'S CASCADE WITH CHORDWISE SPLIT

This paper deals with a novel configuration of axial compressor cascade with chordwise split.Contrast to tandem cascade and cascade with a slot from pressure surface to suction surface,the cascade with a chordwise split can effectively control or delay the separation of boundary layer and increase flow turning angle and stage load,thus the compressor length can be shortened or pressure ratio increased.The paper puts forward a theoretical model.A program for locating the split position and predicting flow field in cascade passage by using Finite Element Method are given.Experiments have verified the mathematical model and the preferable effects of the chordwise split.The results of calculation correspond to the test data satisfactorily.