Seymour Lieblein
naca-tn-4318
Aug 1958
A simple equation relating wake momentum thickness and suction-surface diffusion ratio (ratio of maximum surface velocity to outlet velocity) of conventional low-speed cascade blade is derived from simplified boundary-layer theory in conjunction with several empirical constants.
An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1958/naca-tn-4318.pdf