Investigation of Surge in a Transonic Centrifugal Compressor With Vaned Diffuser—Part I: Surge Signature

نویسندگان

چکیده

Abstract The identification of stall inception mechanisms and stability-limiting components in a centrifugal compressor is required for the development effective surge suppression approaches. Part I this two-part paper investigates signature at subsonic, transonic, supersonic inlet tip conditions, II considers relationship with static pressure characteristics, as well impeller leading edge relative Mach number. Experiments were performed single stage (SSCC) facility Purdue University both steady performance dynamic data recorded. Results show presence mild deep surges on map. Deep occurs subsonic numbers while observed number nears unity. Long length-scale modal oscillations can be detected only transonic operating condition spike disturbances are identified precursor to instability tips numbers. Finally, determined origin throughout most observation impeller-induced refreshes conventional understanding that diffuser typically component compressors vaned diffusers suggests various approaches may necessary achieve range extension

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ژورنال

عنوان ژورنال: Journal of turbomachinery

سال: 2022

ISSN: ['0889-504X', '1528-8900']

DOI: https://doi.org/10.1115/1.4055866