Experiment of the static pressure on the rotating blade surface in an axial compressor

Five high response miniature pressure transducers were used on the rotating blade suction surface of an axial compressor at 50% span to measure the static pressure of rotating blade suction surface at design point and different operating conditions at 2 kr/min, and the experimental data were compared with the CFD numerically simulated results. In experiment, the data acquisition system was fixed and rotated with the compressor, and directly acquired, magnified, stored the pressure signals. The results show: the blade surface pressure of experimental data has good agreement with simulation results except near stall condition. The experimental data are credible; near stall condition, because of the experiment error and the poor calculations of CFD, the experimental data and simulation results have poor agreement.