Measurement and Analysis of Total-Pressure Unsteadiness Data From an Axial-Flow Compressor Stage

[+] Author and Article Information
W. C. Zierke, T. H. Okiishi

Department of Mechanical Engineering, Engineering Research Institute, Iowa State University, Ames, Iowa 50010

J. Eng. Power 104(2), 479-488 (Apr 01, 1982) (10 pages) doi:10.1115/1.3227303 History: Received April 01, 1981; Online September 28, 2009


A fast-response, total-pressure probe was used with a periodically sampling and averaging data acquisition system to study the unsteady total-pressure field in an axial-flow turbomachine. Periodically unsteady total-pressure data were used to demonstrate some of the ways in which turbomachine blade wake transport and interaction influences the energy transfer involved. Observed trends of periodic variations in local total-pressure values could be explained in terms of the details of energy transfer associated with the different kinds of fluid particles (freestream, wake segment, blade surface boundary layer, mixed) moving through a blade row.

Copyright © 1982 by ASME
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