Abstract
A diffuser is a mechanical device used for converting the kinetic energy of flowing fluid into pressure energy. As the flow advances through the diffuser there is ongoing retardation of the flow resulting in conversion of kinetic energy into pressure energy. This is known as diffusion. Diffuser constitutes an essential part in turbo machinery and engineering structures. The present study aims at CFD analysis for the prediction of flow characteristics using various mathematical models. The annular diffuser considered in the present case has both the hub and casings are diverging with equal angles and hub angle keeping constant as 10°. The characteristic quantity such as velocity profiles at various sections and flow patterns have been presented for studying. Standard turbulence models are studied in the present study.
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