The results show that the efficiency of the centrifugal compressor alters obviously when the circumferential position of IGV changed, the variation of maximum and minimum efficiency is 1.9%.

• 结果表明，当进口导叶周向位置改变时，离心压缩机的效率有明显的变化，最高和最低效率点处效率相差1.；9%25。