Gas leakage tlow through small clearances is modeled using two-dimensional (2-D) and quasi one-dimensional {1-D) flow analysis. For 2-D approach, a dimensionless form of Navier-Stokes equations for two-dimensional, laminar, viscous and compressible fluids are employed to compute the det-·1iled tlow field across the clearance. The 2-D study also establishes that when clearance (0) is very small ...

Cavitation instabilities can induce axial and circumferential vibrations, as well noise in turbopump inducers. Therefore, the purpose of present study is to investigate mechanism cavitation instability. The flow field near two-bladed inducer leading edge under alternate blade was experimentally investigated using particle image velocimetry (PIV). It found that tip leakage vortex draws toward it...