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Linearized analysis of the three-dimensional compressible flow through a rotating annular blade row

Published online by Cambridge University Press:  20 April 2006

John A. Lordi  and
Gregory F. Homicz
John A. Lordi
Affiliation:
Aerodynamic Research Department, Calspan Advanced Technology Center, Buffalo, New York
Gregory F. Homicz
Affiliation:
Aerodynamic Research Department, Calspan Advanced Technology Center, Buffalo, New York
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Abstract

Linearized solutions for the flow field of a rotating blade row in an infinitely long annular duct are reviewed. An isolated rotor is assumed to operate in a uniform axial flow so that the disturbance field is steady in a blade fixed co-ordinate system. Both three-dimensional and compressibility effects are included, but attention is confined to subsonic flows. Previously published source-flow solutions omitted a term which affected the thickness part of the rotor flow field constructed from them. Corrected source and rotor-thickness solutions are given, and then the source or monopole solution is used to form a pressure dipole solution. The rotor-loading contribution to the flow field is found by superposition of the revised dipole solutions. The present version of the dipole representation of the steady-loading field is shown to be equivalent to an existing vortex representation, but different from an existing dipole representation. The behaviour of the blade-surface pressure and velocity distributions is described for both the thickness and loading cases. Sample numerical evaluations of the surface quantities are presented.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 103 , February 1981 , pp. 413 - 442
Copyright
© 1981 Cambridge University Press

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