Open AccessTime Resolved Measurements in a Low Aspect Ratio Transonic Compressor Stage
Author(s) -
A. H. Epstein,
W. T. Thompkins,
Jack L. Kerrebrock,
W. F. Ng
Publication year - 1982
Publication title -
volume 1: turbomachinery
Language(s) - English
Resource type - Conference proceedings
DOI - 10.1115/82-gt-201
Subject(s) - transonic , inviscid flow , gas compressor , boiler blowdown , annulus (botany) , mechanics , axial compressor , stage (stratigraphy) , mach number , flow (mathematics) , physics , acoustics , materials science , aerodynamics , inlet , engineering , thermodynamics , mechanical engineering , geology , paleontology , composite material
The time resolved flowfield in a low aspect ratio transonic compressor stage has been studied using a high frequency response sphere probe with a bandpass of D.C. to 20 kHz in a blowdown compressor facility. Averaged over the compressor annulus, the data agree well with those measured with standard pilot type probes on the same stage in a conventional test rig. Not all the spanwise distributions agree, however. These differences are explained as errors in the pilot probe readings due to fluctuations in the flow. The experimental data are compared to the results of a three-dimensional inviscid Euler calculation.