Analysis of the interrow flow field within a transonic axial compressor: Part 1 - Experimental investigation

This paper relates to two-dimensional laser two-focus (L2F) anemometry meas urements, conducted in a transonic research high-pressure compressor. Curve d glass, which conforms to the shroud contour, was used The resulting optic al distortions of the control volume were corrected using art original and inexpensive optical assembly. Synchronized measurements were performed on t wo surfaces of the IGV-rotor interrow region. Particular care was taken in evaluating the capabilities of our L2F technique to accurately describe a f low field with strong gradient. The results presented show that the flow fi eld is dominated by the moving oblique shock and its interaction with the I GV wake.