Accession Number:

ADA022468

Title:

Numerical Solution of Three-Dimensional Boundary Layer Equations.

Descriptive Note:

Final rept. 1 Feb 73-31 Jan 75,

Corporate Author:

MARTIN MARIETTA LABS BALTIMORE MD

Personal Author(s):

Report Date:

1976-02-01

Pagination or Media Count:

38.0

Abstract:

Three-dimensional, incompressible, laminar boundary layer over a spinning blunt body of revolution at incidence and the associated Magnus forces are investigated. Complete solutions for two different, moderate and high, spin rates are obtained by an implicit finite-difference method. A great variety of the circumferential-velocity profiles are determined. Magnus force contributed from the circumferential skin friction and the centrifugal pressure are calculated. These two side-forces partly compensate each other. At lower spin rate, the friction force is larger resulting in a positive Magnus force. At higher spin rate, the opposite is obtained. The changes of the Magnus force from positive at lower spin rate to negative at higher spin rate was previously observed experimentally.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE