NDLI: Criteria for Spike Initiated Rotating Stall

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Vo, Huu Duc Choon, S. Tan Edward, M. Greitzer
Copyright Year	2005
Abstract	A computational study to define the phenomena that lead to the onset of short length-scale (spike) rotating stall disturbances has been carried out. Unsteady simulations show there are two conditions necessary for the formation of spike disturbances, both of which are linked to the tip clearance flow. One is that the interface between the tip clearance and oncoming flows becomes parallel to the leading edge plane. The second is the initiation of backflow, stemming from the fluid in adjacent passages, at the trailing edge plane. The two criteria also imply a length scale circumferential extent of spike disturbances. The scenario developed is consistent with numerical simulations as well as with experimental observations of axial compressor stall inception. A comparison of calculations for multiple blades with those for single passages also allows statements to be made about the utility of single passage computations as a descriptor of compressor stall.
Sponsorship	International Gas Turbine Institute
Starting Page	155
Ending Page	165
Page Count	11
File Format	PDF
ISBN	0791847306
DOI	10.1115/GT2005-68374
e-ISBN	0791837548
Volume Number	Volume 6: Turbo Expo 2005, Parts A and B
Conference Proceedings	ASME Turbo Expo 2005: Power for Land, Sea, and Air
Language	English
Publisher Date	2005-06-06
Publisher Place	Reno, Nevada, USA
Access Restriction	Subscribed
Subject Keyword	Compressor instability Rotating stall Spike stall inception Tip clearance flow Fluids Blades Computer simulation Simulation Stall inception Computation Clearances (engineering) Compressors Engineering simulation Flow (dynamics)
Content Type	Text
Resource Type	Article

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