Accession Number:

ADA009487

Title:

Computational Implications of the Zone of Dependence Concept for Three-Dimensional Boundary Layers on a Spinning Body.

Descriptive Note:

Final rept.,

Corporate Author:

BALLISTIC RESEARCH LABS ABERDEEN PROVING GROUND MD

Personal Author(s):

• Kitchens,Clarence W. , Jr.
• Gerber,Nathan
• Sedney,Raymond

Report Date:

1975-04-01

Pagination or Media Count:

58.0

Abstract:

The properties of the three-dimensional boundary-layer equations and the influence of these properties on numerical solutions are examined. The three-dimensional boundary-layer equations are parabolic, but they possess a secondary hyperbolic-like, property. This hyperbolic property leads to the zone of dependence concept. It is shown that the zone of dependence concept plays an important role in obtaining accurate numerical solutions for three-dimensional boundary-layer problems it is especially important for calculating the boundary layer on a spinning body at incidence. A simple flow field which simulates the essential features of this problem and is an exact solution of the three-dimensional boundary-layer equations is constructed.

Descriptors:

• *BOUNDARY LAYER FLOW
• *THREE DIMENSIONAL FLOW
• EQUATIONS OF MOTION
• FINITE DIFFERENCE THEORY
• FLOW FIELDS
• NUMERICAL INTEGRATION
• SPINNING(MOTION)
• FLAT PLATE MODELS

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE