JIANG Yong-song, WANG Yong-mei, DU Hui, et al. Plenum chamber casing treatment——numerical research of internal flow and mechanism of stall margin improvements[J]. 2008, 23(2).
JIANG Yong-song, WANG Yong-mei, DU Hui, et al. Plenum chamber casing treatment——numerical research of internal flow and mechanism of stall margin improvements[J]. 2008, 23(2).DOI:
The influence of plenum chamber casing treatment on the performance of high loaded and high-speed fan rotor was analyzed through steady simulation.The results indicate that the performance of the same casing treatment differs greatly under different rotational speeds.At the design speed
the casing treatment fails to improve the stall margin of fan rotor
and the efficiency declines by 2.8%.at non-design speed
it enhances significantly the stability of the rotor
without impairment of the rotor performance.The in-depth analysis of the flow field in the casing treatment reveals the inherent mechanism of stall margin improvements by the plenum chamber casing treatment.