This paper describes the measurement and processing of turbulence data
from multistage low-speed compressors. Measurements were made at the
same relative positions in three four-stage compressors, each having d
ifferent levels of the design stage lending coefficient. A new method
of data processing to calculate turbulance intensities and integral le
ngth scales is outlined. Using this method, integral length scales hav
e been measured in turbomachinery flows for the first time. It is show
n how the turbulence intensity and integral length scale vary with pos
ition in the blade passage, with changing flow coefficient and with th
e value of the design stage loaning coefficient. The results have been
used to specify representative inlet conditions for experimental rigs
and to improve the application of CFD turbulence models to turbomachi
nery modeling.