Accession Number : AD0739817

Title :   Analytical Studies of Aircraft Trailing Vortices,

Corporate Author : NIELSEN ENGINEERING AND RESEARCH INC MOUNTAIN VIEW CALIF

Personal Author(s) : Kuhn,Gary D. ; Nielsen,Jack N.

Report Date : 1972

Pagination or Media Count : 28

Abstract : The effects of turbulent mixing and buoyancy on the motion and persistency of a trailing vortex wake behind an aircraft are considered. A model for the characteristics of a turbulent vortex, based on an analogy to a turbulent boundary layer, is presented. A theory of trailing-vortex characteristics behind an aircraft is presented. A theory of trailing-vortex characteristics behind an aircraft is presented based on considerations of the angular and linear momentum of the vortex and the total pressure variation along the axis. The turbulent shear of the axial flow is analyzed and the model of a buoyant vortex wake is presented.

Descriptors :   (*TURBULENT BOUNDARY LAYER, VORTICES), WAKE, TURBULENCE, BUOYANCY, MATHEMATICAL MODELS, THEORY, EXPERIMENTAL DATA, CORRELATION TECHNIQUES

Subject Categories : Aerodynamics
      Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE