Rectangular-wind-tunnel Blocking Corrections Using the Velocity-ratio Method
Author | : Rudolph W. Hensel |
Publisher | : |
Total Pages | : 708 |
Release | : 1951 |
Genre | : Mathematical analysis |
ISBN | : |
Download Rectangular-wind-tunnel Blocking Corrections Using the Velocity-ratio Method Book in PDF, ePub and Kindle
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 boides 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. It is shown that, after wake blocking effects have been removed , the present method furnishes semiempirical blocking corrections for most wind-tunnel models and their components. The test section proportions of the Southern California Cooperative Wind Tunnel at CIT (ratio of height to width equal to 1/square root of 2) are used in the calculations.