Accession Number:

AD0689177

Title:

MEASUREMENTS OF LOCAL HEAT-TRANSFER RATE ON A COOLED SHARP FLAT plate in the merged layer flow regime

Descriptive Note:

Final rept. Aug-Nov 1968

Corporate Author:

ARO INC ARNOLD AFS TN

Personal Author(s):

Report Date:

1969-06-01

Pagination or Media Count:

60.0

Abstract:

Results of measurements of the local convective heat-transfer rate on a sharp-leading-edge flat plate at various angles of attack and in the merged layer flow regime are presented. The measurements were obtained using a phase- change temperature-sensitive paint, which greatly simplifies instrumentation requirements, and these measurements were checked using conventional heat- transfer instrumentation. Data obtained on the windward surface at 0-, 10-, and 20-deg angle of attack are compared to theoretical predictions. The data demonstrate the feasibility of utilizing phase-change temperature-sensitive paint in place of conventional heat-transfer instrumentation in low-density high-speed flows. The data at large angles of attack wedge angles are shown to correlate in the same manner as the zero angle-of-attack data when local inviscid flow parameters are utilized. Based on local inviscid values, the data are in the Mach number range from 4 to 10 and viscous interaction parameter ranges from 0.06 to 0.80. A strong Mach number influence as well as the nonexistence of a definable strong interaction flow regime in this Mach number range was noted.

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics
  • Thermodynamics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE