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.