Accession Number:

AD0686444

Title:

INHIBITION OF FLOW SEPARATION AT HIGH SPEED. VOLUME II. CALCULATION OF NONADIABATIC LAMINAR BOUNDARY LAYERS.

Descriptive Note:

Technical documentary rept. Oct 66-Sep 68,

Corporate Author:

NIELSEN ENGINEERING AND RESEARCH INC PALO ALTO CALIF

Report Date:

1969-03-01

Pagination or Media Count:

90.0

Abstract:

The purpose of the report is to extend previous analytical work of the authors to colder walls by including a term of higher order in the assumed total temperature profile. The analysis is developed for both flat-plate-wedge and cylinder-flare configurations. The effect of this higher order term on the theoretical critical temperature ratio, found in the earlier work for separation of the free-interaction type, is discussed. At the beginning of interaction the boundary layer is assumed to be of the Blasius type and the flow at the edge of the boundary layer throughout the interaction is assumed to be isentropic. Comparisons between the theoretical calculations and experiments are presented for both two-dimensional and axisymmetric configurations. The ratio of wall temperature to free-stream stagnation temperature varies from 1.0 to 0.2. The agreement between the theoretical and experimental pressure distributions is considered good. A comparison between theoretical and experimental heat-transfer distributions indicates only fair agreement. Author

Subject Categories:

  • Aerodynamics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE