抄録
This paper reports about experimental investigations of the effects of seal geometries on rotordynamic fluid forces in a whirling centrifugal impeller. It was found that, (1) At a certain whirling speed, the fluid forces has a peak caused by the coupling between the whirling motion and rotating stall in the vaneless diffuser. (2) The change of seal geometry (inside/outside seal) affects the direction of the fluid force, through the variation of the leakage flow due to the whirling motion.
