Study of Secondary Flows in Blade Cascades of Turbomachines

[+] Author and Article Information
F. Bario

Metraflu, 24 Bis Chemin des Mouilles, 69130 Ecully, France

F. Leboeuf

Ecole Centrale de Lyon, 37 Avenue Guy de Collongue, 69130 Ecully, France

K. D. Papailiou

National Technical University of Athens, Athens, Greece

J. Eng. Power 104(2), 497-509 (Apr 01, 1982) (13 pages) doi:10.1115/1.3227305 History: Received April 01, 1981; Online September 28, 2009


Experiments have been performed with two cascades of turbomachines. The first cascade is composed of highly loaded turbine blades, and has been used in the low subsonic Mach number range. The second cascade consists of highly loaded compressor blades, of the DCA type. The Mach number was then in the high subsonic range. The experimental results are presented in the form of mean values in the pitch direction. Detailed local values are also described. The growth of a passage vortex and a corner effect are presented in the compressor case. Their interactions with the whole flow are analyzed. In the turbine case, the passage vortex is found to be a dominant effect. Results obtained with a theoretical method of calculation of the flow in the blade passage are used to complete the analysis.

Copyright © 1982 by ASME
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