Accession Number:

ADA061208

Title:

A Method for Calculating the Flowfield in the Tail Region of a Body of Revolution.

Descriptive Note:

Technical memo.,

Corporate Author:

PENNSYLVANIA STATE UNIV UNIVERSITY PARK APPLIED RESEARCH LAB

Personal Author(s):

• Hoffman,G. H.

Report Date:

1978-07-19

Pagination or Media Count:

63.0

Abstract:

A method is presented for calculating a high Reynolds number flow field in the aft region of a body of revolution without appendages where the boundary layer and outer inviscid flow strongly interact. The method is based on a correction of the displacement body idea to effectively represent streamline curvature effects by means of a simple pressure mapping. The problem is solved numerically on a digital computer by iterating for the unknown displacement body surface. Typically, from 6 to 8 iterations are required for convergence. Available computation codes are used for the boundary layer flow and outer inviscid flow while a simple integral model is used for the wake. Comparisons of computed results are made with experiment and other numerical solutions for three bodies. Author

Descriptors:

• *COMPUTATIONS
• *HYDRODYNAMICS
• MATHEMATICAL MODELS
• INTERACTIONS
• BOUNDARY LAYER
• WAKE
• EQUATIONS
• INVISCID FLOW
• REYNOLDS NUMBER
• FLUID FLOW
• BODIES OF REVOLUTION

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE