Abstract
The present work relates to the analysis of flow through the parallel hub and diverging casing annular diffuser. In this analysis variation of pressure recovery coefficients have been visualized at the diffuser walls with and without swirl. The casing angle and area ratio have been taken as 60 and 2.5 .The swirl angle was varied from 00to 250 at the inlet of diffuser. The analysis was carried out for flow regime with various experimentally obtained inlet velocity profiles with or without swirl [1]. Pressure coefficients have been calculated along the casing and hub walls of axial annular diffuser. In the present work CFD approach was used to find the results by using RNG k-ε turbulence model.
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