Experiments to assess the influence of changes in the tunnel wall boundary layer on transonic wall crossflow characteristics /
R.F. Starr.

Description

Main Author

Starr, R. F.

Related Names

ARO, Inc.
Arnold Engineering Development Center
United States. Air Force.

Language(s)

English

Published

Arnold Air Force Base, Tennessee : Arnold Engineering Development Center, Air Force Systems Command, United States Air Force, 1975.

Subjects

Transonic wind tunnels.
Wind tunnel walls.
Wall pressure (Aerodynamics)

Summary

The equivalent porosity of the test section wall in a transonic wind tunnel with a fixed geometric porosity and varying wall boundary-layer displacement thickness, has been investigated. Previous experiments have demonstrated that the boundary-layer displacement thickness on the wall influences the wall crossflow characteristic. Experimental data from a Ludwieg tube type of transonic tunnel are compared with data from conventional transonic tunnels in the Mach number range from 0.95 to 1.15. The displacement thickness studied is comparatively thin and represents typical values which will be encountered in future high Reynolds number transonic tunnels.

Note

Report was prepared by ARO, Inc., a subsidiary of Sverdrup & Parcel and Associates, Inc.
"Final Report for Period November 1974 -- January 1975."
"November 1975."

Physical Description

30 pages : illustrations ; 28 cm

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