The tip clearance and eccentricity of the impeller will affect aerodynamic performance fan, installation vibration characteristics are relatively highly required if is too small. A reasonable excellent coaxially necessary to ensure that does not rub with shell has superior when fan working. In current study, a mixed flow was taken as object experimental explorations were performed on C-type tes...

To explain the effect of tip leakage flow on performance an axial-flow transonic compressor, compressors with different rotor clearances were studied numerically. The results show that as clearance increases, intensity is increased, shock wave position moved backward, and interaction between vortex intensified, while boundary layer weakened. Most all, stall mechanisms varying are different. mai...

In this paper, the fine/turbo software of NUMECA was used. Based on three-dimensional steady Reynolds averaged N-S equations, S-A turbulence model used to calculate relationship between tip clearance and diameter impeller, which were δ = 0.1%, 0.3%, 0.5% 0.7% respectively. The flows four water jet axial flow pumps with different clearances numerically studied at rates. results indicate that siz...