微量叶尖喷气对压气机稳定性的影响

Study of Micro Tip Injection Effect on Compressor Stability

为了研究微量喷气对压气机稳定性的影响及其机理,在双级低速轴流压气机试验器上开展了微量叶尖喷气对压气机稳定裕度影响的参数化研究,并将其结果与无喷射时的基准值进行比较。结果表明,微量喷气能够提高压气机的稳定裕度,扩宽压气机的稳定工作范围,扩稳机制是抑制了模态波向旋转失速团的发展并同时改善了转子叶尖的流场;喷气量越大,微量喷气扩稳效果越明显;在相同喷气量的情况下,沿逆压气机旋转方向偏转一定的角度喷气时叶尖微量喷气具有较好的扩稳效果。

To study the effect of the micro tip injection on the compressor stability and its mechanism, the article carries out the correlative research on the compared with the baseline values without injection. two-stage low speed axial compressor. The result is Comparison results indicate that micro tip injection is able to improve the compressor stable margin, and extend the stable operation range of compressors. The mechanism of the extension is to suppress modal wave and ameliorate rotor tip flow field. The more the injection flow mass, the clearer the injection effect. When injection angle deflects a certain angle in the counter rotation direction, the injection effect is clear.