Accession Number:

AD0673917

Title:

REVIEW OF THE VORTEX WAKE ROLLUP PROBLEM.

Descriptive Note:

Technical rept.,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE AEROELASTIC AND STRUCTURES RESEARCH LAB

Personal Author(s):

Report Date:

1967-06-01

Pagination or Media Count:

47.0

Abstract:

The near wake problem behind an airfoil is reviewed in the context of some eighteen references, both theoretical and experimental. It is found that the body of theoretical literature makes an inconsistent approximation about the axial component of velocity in the flow. The techniques of selfsimilar hydrodynamics, vortex system theory, and conservation of energy arguments as they apply to the roll-up problem are discussed. Some important experimental evidence seems to confirm that the near wake problem is basically three-dimensional and should be reexamined as such. A paradox in the role of viscosity in the concentrating mechanism is discussed. Author

Subject Categories:

  • Aircraft
  • Numerical Mathematics
  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE