Experimental Study of Modal Disturbance and Rotating Stall Distribution

Abstract:

To execute stall active control technology effectively and make clear of stall inception induced by modal disturbance, this paper carries out the correlative research on modal disturbance and rotating stall on the two-stage low-speed axial compressor. The results indicate that the stall inception of the compressor is modal style and the modal oscillation propagates at 38% rotor speed while the stall cell propagation speed is 42% rotor speed. The phase angles of modal oscillation and rotating stall along the axial direction are different, but their trajectories are both similar to the blade passage shape. The stall mechanisms of modal-type and spike-type inceptions are different. It doesnt appear that leading-edge tip clearance flow spillage blow the blade tip while the modal-type stall formation.

• Periodical: Advanced Materials Research (Volumes 718-720)
• Pages: 1804-1810
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.718-720.1804
• Online since: July 2013
• Authors: An Qing Lai, Jun Hu, Liang Li, Ju Luo
• Keywords: Compressor, Modal Disturbance, Phase Angle, Rotating Stall

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