Numerical analysis on tip leakage flow of circumferential skewed blades according to flow rates

Under the influence of injected flow, the dynamic balance that drives the self-induced unsteady tip leakage flow is destroyed and a new forced-induced periodic fluctuation of tip leakage flow establishes.

In this paper, the numerical simulation was used to investigate the tip leakage flow fields in a lower pressure axial flow fan with three kinds of circumferential skewed rotors, including the traditional radial rotor, the forward-skewed rotor and the backward-skewed rotor.