
Accession Number : AD0753131
Title : The Structure of Turbulent Line Vortices,
Corporate Author : CALIFORNIA INST OF TECH PASADENA
Personal Author(s) : Saffman,P. G.
Report Date : 13 OCT 1972
Pagination or Media Count : 37
Abstract : A theory is given to explain the observed dependence on Reynolds number of the decay of turbulent line vortices. The discussion considers first the selfsimilar vortex, in which all quantities are assumed to depend only on the circulation at infinity, the Reynolds number, and the time from a virtual origin. It is argued that the turbulent line vortex has a triple structure: an outer vortex of given radius, an inner vortex, and a viscous core. The axial velocity in the core, produced by growth of a trailing vortex shown to be Reynolds number dependent. (Author)
Descriptors : (*TURBULENCE, ATTRITION), (*AIRCRAFT, WAKE), VORTICES, THEORY, MATHEMATICAL MODELS, AVIATION SAFETY, STATISTICAL DISTRIBUTIONS, VELOCITY, AERODYNAMIC CONTROL SURFACES, EQUATIONS OF MOTION
Subject Categories : Fluid Mechanics
Distribution Statement : APPROVED FOR PUBLIC RELEASE