Flow behaviour in centrifugal impellers

Ramamurthy, S and Murugesan, K and Prithviraj, D (1991) Flow behaviour in centrifugal impellers. In: 10th International Symposium on Air Breathing Engines, 1-6 Sep 1991, Nottingham, England.

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Abstract

Detailed investigations through hot-wire anemometry at the outlet of a centrifugal compressor impeller reveal a complex nature of flow behavior both spatially across the blade to blade pitch and with respect to time. The relative flow angle and velocity do not fit into the conventional steady state jet-wake model nor the one-dimensional slip theory. A hypothesis that periodic vortices shed from the suction surface well inside the impeller sweeping across the impeller passage is put forward to explain the large variations in flow angle observed.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Centrifugal compressors;Flow characteristics;Flow measurement; Impellers;Outlet flow;Hot-wire anemometers;Suction;Vortex shedding
Subjects: AERONAUTICS > Aerodynamics
Division/Department: Propulsion Division, Propulsion Division, Other
Depositing User: M/S ICAST NAL
Date Deposited: 31 Mar 2008
Last Modified: 24 May 2010 09:55
URI: http://nal-ir.nal.res.in/id/eprint/4462

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