Accession Number:

ADA038625

Title:

The Effects of Viscous Interaction on the Transonic Jet-Flap.

Descriptive Note:

Final rept. 1 Oct 75-30 Sep 76,

Corporate Author:

GENERAL APPLIED SCIENCE LABS INC WESTBURY N Y

Personal Author(s):

Report Date:

1977-03-01

Pagination or Media Count:

43.0

Abstract:

The inviscid and viscous effects associated with a jet-flapped airfoil in the transonic regime are investigated. The particular formulation developed employs integral methods for the description of the viscous portions of the flow utilizing the turbulent kinetic energy equation and a relaxation method for the inviscid portions. The viscous-inviscid coupling procedures along the wing and the jet acknowledge the importance and magnitude of the viscous effects on pressure distribution and directly incorporate the displacement effect on the wing and the effects of the jet mixing into the boundary conditions for the computation of the entire flow. Some numerical results are presented to validate the solution techniques that have been selected and to assess the importance of mass and momentum entrainment into the jet on jet flap effectiveness. Author

Subject Categories:

  • Aircraft
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE