CORDIS Project
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This project investigates the instabilities in centrifugal compressors with vaneless diffusers, focusing on predicting surge phenomena. By combining numerical simulations and experimental data, the project aims to enhance understanding of flow dynamics and improve compressor reliability.
Centrifugal compressor stages using vaneless diffusers are known to have a wide operating range.
However, when operated outside of this range, instabilities have been reported to commonly develop in the impeller (rotor) or diffuser or both.
The unsteady flow phenomena are believed to start from a localized flow separation (stall) that frequently will orbit within the stage at sub-harmonic rotational speeds (rotating stall).
If not damped sufficiently the stall cells will eventually develop into…
DEUTSCHES ZENTRUM FUR LUFT - UND RAUMFAHRT EV
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Royal Netherlands Aerospace Centre Amsterdam
Netherlands, Amsterdam
Type: Research institute
Activity type: Research Organisations
SME: No
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