Unstable Flow in Centrifugal Fans-Reference-Cited by-同舟云学术

Unstable Flow in Centrifugal Fans

Published:1996-03-01 Issue:1 Volume:118 Page:128-133
ISSN:0098-2202
Container-title:Journal of Fluids Engineering
language:en
Short-container-title:

Author:

Chen P.¹,Soundra-Nayagam M.²,Bolton A. N.³,Simpson H. C.⁴

Affiliation:

1. School of Mechanical & Production Engineering, Nanyang Technological University, Singapore 2263

2. Department of Electrical & Electronics Engineering, Loughborough University of Technology, Loughborough, U.K

3. Flow Center, National Engineering Laboratory, Glasgow, U.K

4. Department of Mechanical & Processing Engineering, University of Strathclyde, Glasgow, U.K

Abstract

Rotating stall and the inlet vortex in centrifugal fans with inlet vane control has been studied. The advances in stall research in aero-engine compressors are discussed. The present study shows that stall in centrifugal fans can be quite different from that in axial compressors, in that stall can occur in a progressive and intermittent fashion. The study also shows that a discontinuity in the fan characteristic is not necessarily accompanied by rotating stall, unlike the axial machines. Experimental results indicate that the positive prewhirl created by inlet vanes tends to delay the occurrence of stall. Also, dorsal fin devices that are used to control the inlet vortex do not seem to affect the stall point unfavorably. The inlet vortex frequency was found to invariably exhibit a linear relation with the flow rate even when dorsal fins were used. This offers a practical method to distinguish between the inlet vortex and rotating stall.

Publisher

ASME International

Subject

Mechanical Engineering

Link

http://asmedigitalcollection.asme.org/fluidsengineering/article-pdf/118/1/128/5541263/128_1.pdf

Reference14 articles.

1. Bolton, A. N., 1975, “Pressure Pulsations and Rotating Stall in Centrifugal Fans,” Proc. of IMechE Conf. on Vibration and Noise in Pump, Fan and Compressor Installations, Southampton, pp. 175–181.

2. Cassidy J. J. , and FalveyH. T., 1970, “Observations of Unsteady Flow Arising after Vortex Breakdown,” Journal of Fluid Mechanics, Vol. 41, pp. 727–736.

3. Chen, P., 1993, “Unstable Flow in Centrifugal Fans,” Ph.D thesis, University of Strathclyde.

4. Day I. J. , 1993, “Stall Inception in Axial Flow Compressors,” ASME Journal of Turbomachinery, Vol. 115, pp. 1–9.

5. Emmons H. W. , PearsonC. E., and GrantH. P., 1955, “Compressor Surge and Stall Propagation,” Trans. ASME, Vol. 77, pp. 455–469.

Cited by 7 articles. 订阅此论文施引文献订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献

1. Asymmetric flow in a double-suction centrifugal fan induced by an inclined impeller;Physics of Fluids;2024-01-01

2. Aerodynamic noise prediction of a high-speed centrifugal fan considering impeller-eccentric effect;Engineering Applications of Computational Fluid Mechanics;2022-03-14

3. Meridional shape design and the internal flow investigation of centrifugal impeller;Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science;2016-08-30

4. Experimental study on the noise reduction of an industrial forward-curved blades centrifugal fan;Applied Acoustics;2009-08

5. Effect of inlet straighteners on centrifugal fan performance;Energy Conversion and Management;2006-11