Accession Number:

AD0770313

Title:

Laminar Flow Past Bodies Under Perfect Slip

Descriptive Note:

Corporate Author:

DAVID W TAYLOR NAVAL SHIP RESEARCH AND DEVELOPMENT CENTER BETHESDA MD COMPUTATION MATHEMATICS/LOGISTICS DEPT

Personal Author(s):

• Lugt, Hans J.

Report Date:

1973-07-01

Pagination or Media Count:

30.0

Abstract:

Current experience conducted at Dornier System on special solid-surface treatment have prompted a study on the fluid dynamic implications of perfect-slip flow. Numerical results on incompressible fluid flows past thin elliptic cylinders at various angles of attack and at moderate Reynolds numbers show that flow separation, instability, and vortex shedding occur also under the perfect-slip condition. Of particular interest is the generation and spreading of an initial vortex after the abrupt start of an airfoil. The circulation theory of lift for potential flows is also applicable to perfect slip. Thus, lift exists so that flying under perfect slip is possible.

Descriptors:

• *AIRFOILS
• VORTICES
• DRAG
• LAMINAR FLOW
• LIFT
• ANGLE OF ATTACK

Subject Categories:

• Aerodynamics
• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE