Accession Number:

AD0854309

Title:

Nozzle Turbulent Boundary-Layer Measurements in the VKF 50-In. Hypersonic Tunnels

Descriptive Note:

Final rept. Mar-Jul 1965

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1969-06-01

Pagination or Media Count:

33.0

Abstract:

Pitot pressure and total temperature measurements in the tunnel wall boundary layers in the von Karman Gas Dynamics Facility 50-in.-diam hypersonic wind tunnels are presented. The measurements were obtained in the wind tunnel test sections at nominal free-stream Mach numbers of 6, 8, and 10 at free-stream unit Reynolds numbers from 320,000. to 3,910,000. per foot. The boundary layers were fully turbulent velocity profile index 6 to 10, and the total thickness ranged from 4 to 11 in. Velocity and mass flow profiles were computed and used to calculate boundary-layer displacement and momentum thicknesses. The experimentally determined ratio of displacement thickness to momentum thickness was essentially independent of Mach number and Reynolds number over the ranges investigated.

Subject Categories:

  • Test Facilities, Equipment and Methods
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE