进气旋流畸变对压气机性能的影响

为研究进气旋流畸变对压气机性能影响,在单级轴流压气机试验台上加装旋流发生器.利用所设计的旋流发生器,产生不同旋转方向及不同强度的整涡旋流畸变和对涡旋流畸变,分析其对压气机性能、稳定性的影响.结果表明:在一定旋流畸变强度下,正向整涡旋流畸变会减小压气机增压能力,但增加压气机稳定裕度;相比之下,反向整涡旋流畸变对压气机增压能力影响较小,但对稳定性有显著影响.对涡旋流畸变对于压气机的增压能力影响较小,可以忽略不计,对压气机稳定性有一定的影响.

Influence on compressor characteristic of inlet swirl flow distortion

To investigate the influence of inlet swirl flow distortion on compressor characteristic, a swirl flow producer was installed onto a single-stage axial compressor test bench. By using swirl flow producer to produce swirl flow distortions with different directions of rotation and different intensities, the inflences of swirl flow distortions on compressor characteristic and stability were analyzed.Results show that, the bulk co-swirl flow distortion can reduce the pressurized ability but increase stability margin of compressor under some swirl flow distortion intensities, bulk counter-swirl flow distortion has a small influence o pressurized ability but obvious influence on stability of compressor, by contrast. Twin swirl flow distortion has a small influence o pressurized ability,which can be ignored,but has some influence on stability of compressor.