The article of record as published may be located at http://dx.doi.org/10.1115/1.2929120The results of two component laser-Doppler velocimeter (LDV) surveys made in
the near wake (to one fifth chord) of a controlled diffusion (CD) compressor blade
in a large-scale cascade wind tunnel are reported. The measurements were made at
three positive incidence angles from near design to angles thought to approach stall.
Comparisons were made with calibrated pressure probe and hot-wire wake measurements
and good agreement was found. The flow was found to be fully attached
at the trailing edge at all incidence angles and the wake profiles were found to be
highly skewed. Despite the precision obtained in the wake velocity profiles, the blade
loss could not be evaluated accurately without measurements of the pressure field.
The blade trailing edge surface pressures and velocity profiles were found to be
consistent with downstream pressure probe measurements of loss, allowing conclusions
to be drawn concerning the design of the trailing edge
