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the nature of flow distortions caused by rotor blade wakesThe distortion caused by wakes of rotor blades is one of the least understood phenomena in turbomachinery. An attempt is made to predict the decay characteristics of the defect in axial and tangential velocity components, and the decay of the maximum radial velocity inside the rotor wake using the momentum integral analysis. The predictions agree well with the experimental data taken at the exit of an axial flow fan operating at zero incidence. The measurements are carried out with a three sensor hot wire probe. The wake width is found to grow linearly with distance downstream and the defect in tangential velocity inside the rotor wake decays fastest of the three components. An empirical expression is also provided for the axial velocity profile of a rotor wake.
Document ID
19760018085
Document Type
Conference Paper
Authors
Lakshminarayana, B.
(Pennsylvania State Univ. University Park, PA, United States)
Date Acquired
August 8, 2013
Publication Date
April 1, 1976
Publication Information
Publication: AGARD Unsteady Phenomena in Turbomachinery
Subject Category
AERODYNAMICS
Funding Number(s)
CONTRACT_GRANT: NSG-3012
Distribution Limits
Public
Copyright
Other

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