In most current turbofan engines, the interaction between fan wakes and the outlet guide vanes in the by-pass duct or the inlet guide vanes of the core engine, is the major noise generating mechanism. To analyze and predict the sound field, a lifting surface approximation of the vanes has been widely accepted as a practical method. However, over the years, experimental validation has been only partial. Recently, a set of complete and clean experimental data on rotor/stator interaction has become available, which adds significantly to the existing material. In the present paper these data are used for a detailed comparison with results of a lifting surface method. Despite an unsteady normal velocity up to 20 percent of the main velocity, a good agreement between measured and computed vane pressures is found.
Experimental validation of a lifting surface model for rotor wake - stator interaction
Experimentelle Untermauerung eines Modells mit Auftriebswelle zur Ermittlung der Wechselwirkung zwischen Rotorwiderstand und Stator
AIAA-Papers ; Apr ; 1-7
1988
7 Seiten, 11 Bilder, 12 Quellen
Conference paper
English
Experimental Validation of Lifting Surface Theory for Rotor-Stator Interaction Noise Generation
Online Contents | 1998
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