Stall propagation in a cascade of airfoils
Name
14184336.pdf
Size
13.51 MB
Format
Adobe PDF
Checksum (MD5)
3f832e319214fa5ad109753206805935
Author(s)
Kriebel, Anthony R.
Date Issued
1956
Publisher
Cambridge, Mass. : Gas Turbine Laboratory, Massachusetts Institute of Technology, [1956]
Series/Report no.
DIC 7381
GTL report #36
Abstract
An experimental investigation of stall propagation in a stationary circular cascade by means of high speed schlieren and interferometer photography is described. This investigation suggests an analytical approach to the problem which is valid only for an isolated blade row in an infinite flow field but which is not restricted to small unsteady perturbations or an assumed simplified cascade geometry. Conditions necessary for the existence of the assumed type of stall cells are described and equations are derived for the velocity of stall cell propagation. The propagation velocities predicted for the theoretical potential flow-model correlate with all the experimental values measured in an isolated rotor within 15%. Analysis of the flow model predicts a tendency for the assumed type of stall cell to split with increasing incidence of the mean flow through the blade row which appears to correlate with the experimental observation of a trend for increasing numbers of cells in the rotor.
Description
August 1956
Also issued as: Thesis (Sc.D.) Massachusetts Institute of Technology. Dept. of Mechanical Engineering, 1956
Includes bibliographical references
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