Accession Number : AD0465087

Title :   A SECOND ORDER SOLUTION FOR THE VELOCITY DISTRIBUTION IN A TURBULENT WAKE.

Descriptive Note : Final rept., Apr 63-Oct 64,

Corporate Author : MINNESOTA UNIV MINNEAPOLIS DEPT OF AERONAUTICS AND ENGINEERING MECHANICS

Personal Author(s) : Heinrich, H. G. ; Rust, L. W., Jr.

Report Date : APR 1965

Pagination or Media Count : 42

Abstract : Two corrections to the linearized theory of incompressible turbulent wakes behind a body of revolution are presented. First, the nonlinear terms in the governing equations are retained and a second order solution is obtained. In the second case, a variable turbulent viscosity term is used in the linearized first order equation. Numerical results of both methods are compared with measured data for several axially symmetric bodies. The comparison indicates that both methods provide a better approximation than existing ones. The variable turbulent viscosity first order solution appears to give the best approximations, tending to substantiate the postulation of a radial dependence of the turbulent viscosity and also to illustrate the influence of the viscosity term. (Author)

Descriptors :   (*BODIES OF REVOLUTION, WAKE), TURBULENCE, INCOMPRESSIBLE FLOW, THEORY, LINEAR SYSTEMS, NONLINEAR DIFFERENTIAL EQUATIONS, VISCOSITY, SUBSONIC CHARACTERISTICS, NUMERICAL ANALYSIS, CORRECTIONS, VELOCITY, DISTRIBUTION.

Distribution Statement : APPROVED FOR PUBLIC RELEASE