Accession Number:

AD0706181

Title:

EFFECT OF GAS COMPRESSIBILITY ON THE TRANSITION OF A LAMINAR BOUNDARY LAYER INTO A TURBULENT ONE,

Descriptive Note:

Corporate Author:

FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

• Kozlov,L. P.

Report Date:

1970-02-03

Pagination or Media Count:

10.0

Abstract:

By using the hydrodynamic model of finite perturbations, the phenomenological theory is developed for the laminar boundary layer transition into a turbulent boundary layer on a surface with an arbitrary pressure gradient distribution on the external boundary of the layer in compressible gas. A new dependence of the critical Reynolds number in the transition point from the initial turbulence of the running flow relative to roughness and Mach number is obtained in an analytical form. This dependence is in good agreement with the known experimental data. Author

Descriptors:

• (*BOUNDARY LAYER TRANSITION
• *COMPRESSIBLE FLOW)
• LAMINAR BOUNDARY LAYER
• TURBULENCE
• PERTURBATION THEORY
• REYNOLDS NUMBER
• USSR

Subject Categories:

• Aerodynamics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE