Inception and development of rotating stall in a transonic axial flow compressor stage

Naqpurwala, QH and Guruprasad, SA (1996) Inception and development of rotating stall in a transonic axial flow compressor stage. In: Proceedings of the 3rd International Symposium on Experimental and Computational Aerothermodynamics of Internal Flowsand Computational Aerothermodynamics of Internal Flows, 1-6 Sept 1996, China.

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Abstract

This paper presents the results of investigations of the inception and development of rotating stall in a high speed compressor stage. The onset of stall was found to be abrupt, and the ensuing deep stall was characterized by a single full span cell covering almost 1/3 annulus and rotating at half the rotor speed. The stall cell initiated at the rotor tip and propagated rapidly in radial and circumferential directions. The full span cell exhibited large tangential velocities, as well as strong axial velocity fluctuations near the rotor tip. The stall intensity, however, decreased towards the hub. Long time records of the stall transients revealed that the so-called abrupt stall, in fact, took few rotor revolutions to develop from its inception.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Large tangential velocities;Aerothermodynamics
Subjects: ASTRONAUTICS > Spacecraft Design, Testing and Performance
Division/Department: Propulsion Division, Propulsion Division
Depositing User: M/S ICAST NAL
Date Deposited: 19 Sep 2006
Last Modified: 24 May 2010 09:50
URI: http://nal-ir.nal.res.in/id/eprint/2765

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