Rectangular-wind-tunnel blocking corrections using the velocity-ratio method

Rudolph W. Hensel
naca-tn-2372
Jun 1951


In this report calculations of the ratios of the velocity increments at test bodies to those at the tunnel walls caused by the solid blocking of these bodies within the walls of a closed rectangular wind tunnel are presented. The bodies treated include two-dimensional airfoils; small bodies of revolution; straight, untapered, finite-span wings of varying span; and swept, untapered, finite-span wings of varying span.

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http://naca.central.cranfield.ac.uk/reports/1951/naca-tn-2372.pdf