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Experimental and Numerical Investigation of the Unsteady Endwall Flow in a Highly Loaded Axial Compressor Stator
Citation key 2014_beselt_25944-asme
Author Beselt, C. and van Rennings, R. and Peitsch, D. and Thiele, F. and Ehrenfried, K.
Pages GT2014-25944
Year 2014
ISBN 978-0-7918-4563-9
DOI 10.1115/GT2014-25944
Location Düsseldorf, Germany
Journal ASME Turbo Expo 2014: Turbine Technical Conference and Exposition
Volume Volume 2D: Turbomachinery
Month 06
Note V02DT44A017,
Technische Universität Berlin:
C. Beselt, R. van Rennings, D. Peitsch, F. Thiele, K. Ehrenfried
Editor ASME
Series Turbo Expo: Power for Land, Sea, and Air
Abstract The unsteady endwall pressure distribution is investigated by means of highly resolved pressure measurements and numerical simulations in an axial compressor stator exhibiting the phenomenon of rotating instability. The endwall flow has been observed to play an important role in the inception of rotating instability. The statistical properties of the measured pressure fluctuations at the hub endwall of the axial compressor stator are compared for a series of blade loadings. The results allow conclusions about the location of regions being closely connected to the unsteady dynamics related to the rotating instability phenomenon. Furthermore the operating points with detected rotating instability are compared with unsteady numerical results.
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