Accession Number:

ADA179654

Title:

On the Unsteady Characteristics of Flows Around an NACA 0012 Airfoil.

Descriptive Note:

Final rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE CENTER FOR AERODYNAMIC STUDIES

Report Date:

1986-01-01

Pagination or Media Count:

34.0

Abstract:

Unsteady excitation was generated by a rotating elliptical cylinder located below and behind the airfoil. This produced an unsteady flow of approximately constant phase. Four regions were identified within the unsteady turbulent boundary layer and the viscous sublayer was most affected by the unsteady flow. The velocity phase shift was found to be a function of the reduced frequency of the rotating elliptical cylinder. This phenomena was examined experimentally and analytically.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE