NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
An Investigation of Surge in a High-Speed Centrifugal Compressor Using Digital PIVCompressor stall is a catastrophic breakdown of the flow in a compressor, which can lead to a loss of engine power, large pressure transients in the inlet/nacelle and engine flameout. The implementation of active or passive strategies for controlling rotating stall and surge can significantly extend the stable operating range of a compressor without substantially sacrificing performance. It is crucial to identify the dynamic changes occurring in the flow field prior to rotating stall and surge in order to successfully control these events. Generally, pressure transducer measurements are made to capture the transient response of a compressor prior to rotating stall. In this investigation, Digital Particle Imaging Velocimetry (DPIV) is used in conjunction with dynamic pressure transducers to simultaneously capture transient velocity and pressure measurements in the non-stationary flow field during compressor surge. DPIV is an instantaneous, planar measurement technique which is ideally suited for studying transient flow phenomena in high speed turbomachinery and has been used previously to successfully map the stable operating point flow field in the diffuser of a high speed centrifugal compressor. Through the acquisition of both DPIV images and transient pressure data, the time evolution of the unsteady flow during surge is revealed.
Document ID
20030013622
Acquisition Source
Glenn Research Center
Document Type
Technical Memorandum (TM)
Authors
Wernet, Mark P.
(NASA Glenn Research Center Cleveland, OH United States)
Bright, Michelle M.
(NASA Glenn Research Center Cleveland, OH United States)
Skoch, Gary J.
(Army Research and Technology Labs. Cleveland, OH United States)
Date Acquired
September 7, 2013
Publication Date
December 1, 2002
Subject Category
Aircraft Propulsion And Power
Report/Patent Number
NAS 1.15:211832
NASA/TM-2002-211832
E-13281-1
Report Number: NAS 1.15:211832
Report Number: NASA/TM-2002-211832
Report Number: E-13281-1
Funding Number(s)
PROJECT: RTOP 519-20-53
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
No Preview Available