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Published January 1956 | Reprint
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Compressibility effects on secondary flows

Loos, H. G.

Abstract

The method of W. R. Hawthorne for the calculation of the secondary vorticity is generalized for compressible flow. It is shown that in the linearized theory (small vorticity) the influence of compressibility upon the secondary vorticity is due to (1) the entropy gradient in the approaching flow and (2) the compression of the fluid during the turning of the flow. The analysis is applied to the secondary vorticity which generates in a cascade or bend if the approaching flow has a boundary layer with a Prandtl Number equal to unity and has been developed along an insulated wall.

Additional Information

© 1956 Institute of the Aeronautical Sciences. Received November 4, 1954. This work was carried out under the sponsorship of the Office of Scientific Research, Air Research and Development Command, and represents a portion of an investigation into secondary flow in axial compressors, performed at The Daniel and Florence Guggenheim Jet Propulsion Center, California Institute of Technology.

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August 19, 2023
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