Accession Number:

AD0736880

Title:

Three-Dimensional Laminar Boundary-Layer Analysis of Upwash Patterns and Entrained Vortex Formation on Sharp Cones at Angle of Attack.

Descriptive Note:

Final rept. Jul 1970-May 1971

Corporate Author:

ARNOLD ENGINEERING DEVELOPMENT CENTER ARNOLD AFB TN

Personal Author(s):

Report Date:

1971-12-01

Pagination or Media Count:

61.0

Abstract:

Application of three-dimensional inviscid and viscous laminar boundary layer analyses for cold wall hypersonic flows over sharp cones at incidence is presented relative to experimental data, showing surface upwash angles and entrained vortex formation leading to crossflow-induced boundary- layer transition. Three-dimensional neutral inviscid stability theory for stationary disturbances is used to calculate the angular orientation of the entrained vortices in the boundary layer while a maximum crossflow Reynolds number concept is applied for correlation of the onset to vortex formation due to crossflow instability.

Subject Categories:

  • Aircraft
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE