With reference to single-stage swirler design method

four kinds of third stage swirler of different blade numbers and installation angles in triple-stage swirler cup were designed. Triple-stage swirler cup combustor flow field was studied through the particle image velocity(PIV) technology. The experimental results show that with the increase of the third stage swirler blade number and installation angle

the axial velocity in main combustion zone decreases gradually

enhancing the effect of main combustion hole jet. Under the same blade number condition

the third stage swirler vortex intensity is boosted with the increase of the third stage swirle blade installation angle. For different third stage swirler blade installation angles

the flat trend of axial velocity increases with the increase of the third stage swirler blade number

making the effect of combustor flow disturbance decreases by main combustion hole jet and the mainstream flow more smoothly.