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Compressor plays a crucial role in the air management system (AMS), which is used in fuel cell systems (FCS). In this paper, an impeller of centrifugal compressor for AMS of a 65 kW FCS was designed. The performance of initial designed impeller was investigated by computational fluid dynamics (CFD). The univariate parameters of initial impeller were analyzed. The simulation results show that the geometric...
A parametric study of a centrifugal compressor with inlet duct treatment circumferentially distributed holes has been performed numerically using three-dimensional Reynolds-averaged Navier-Stokes equations. The shear stress transport turbulence model was used for analysis of turbulence. The finite volume method and an unstructured grid system were used for the numerical solution. Tested parameters...
This paper numerically investigated the influences of tip clearance of impeller in the 15,000 HP centrifugal compressors. The leakage flow by tip clearance of impeller could be resulted in increasing pressure loss and decreasing performance and efficiency of centrifugal compressor. The numerical simulation using ANSYS CFX was conducted with various values of tip clearance of impeller between 0.6 mm...
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