Analysis of Swirling Flow in Annular Diffuser at Different Cone Angle

Priya Priya; B. B. Arora

doi:10.5750/ijme.v168iA4(S).1884

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Published: Oct 10, 2026

DOI: https://doi.org/10.5750/ijme.v168iA4(S).1884

Keywords:

Annular diffusers Pressure coefficient Parallel hub diverging casing Swirl

Priya

Department of Mechanical Engineering, Delhi Technological University, Delhi, India

B. B. Arora

Department of Mechanical Engineering, Delhi Technological University, Delhi, India

Abstract

The gas turbine is a critical power device in modern energy systems. The Present work is analysis of the swirling flow
carried out with validated CFD model on the annular diffuser. Experimental inlet velocity profile was obtained for parallel hub diverging casing annular diffuser with equivalent cone angle of 10°. CFD model was applied on the same geometry and the results obtained were validated. Validated CFD model was applied on other configurations of the diffusers having area ratio 2 &3 and inlet swirl angle ranging between 0° to 25°. All the diffusers had same equivalent cone angle configurations of 10° & 20°.

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Vol. 168 No. A4(S) (2026): Special Issue: International Conference of Advance Research and Innovation

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