The Effects of Low Level Free Stream Turbulence on the Aerodynamic Efficiency of Two Dimensional Wings Louisiana State Univ. Baton Rouge, LA

Format:

Conference/Event

Author/Creator:

Catalano, George D., author.

Conference Name:

Autotechnologies Conference and Exposition (1987-01-20 : Monte-Carlo, Monaco)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1987

Summary:

Lift and pitching moment coefficients are determined for a symmetrical NACA 0012 and an asymmetrical NASA LS(1)-0417 for free stream turbulent intensities, urms /U equal to 0.005 and 0.015. The tests are performed at Reynolds numbers based on chord length equal to 150,000 and 500,000 in an open return, closed test section type wind tunnel. Velocity information is obtained via laser Doppler and hot wire anemometry techniques. The lift coefficients, Cℓ for both airfoils decrease approximately 15% at each angle of attack at the higher turbulence level. The maximum Cℓ, however, is increased as is the stall angle. Also, the pitching moment coefficients became more positive with respect to the quarter chord.The integral scale of the free stream turbulence is approximately 1.5 cm

Notes:

Vendor supplied data

Publisher Number:

870706

Access Restriction:

Restricted for use by site license