Accession Number:

AD0743054

Title:

Laminar Flows Past Elliptic Cylinders at Various Angles of Attack

Descriptive Note:

Research and development rept.

Corporate Author:

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

Personal Author(s):

• Lugt, Hans J.
• Haussling, Henry J.

Report Date:

1972-02-01

Pagination or Media Count:

65.0

Abstract:

Numerical solutions for laminar incompressible fluid flows past thin elliptic cylinders at various angles of attack are obtained using a stream function-vorticity formulation. The flow is considered to be two-dimensional and time-dependent. Potential flow is selected as the initial condition. Almost steady-state solutions have been computed for the cases alpha 0 deg, Re 200 alpha 45 deg, Re 15 and alpha 90 deg, Re10 where alpha and Re are the angle of attack and the Reynolds number, respectively. Vortex shedding has been studied for alpha 45 deg, Re 30 and 200.

Descriptors:

• *LAMINAR FLOW
• *SHIP HULLS
• VORTICES
• ANGLE OF ATTACK
• INCOMPRESSIBLE FLOW
• CONVEX BODIES
• REYNOLDS NUMBER
• MODEL TESTS
• NUMERICAL METHODS AND PROCEDURES

Subject Categories:

• Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE