No abstract

A quantitative global skin-friction measurement technique is proposed. An oil-film is doped with a luminescent molecule and thereby made to fluoresce in order to resolve oil-film thickness. Particle Image Surface Flow Visualization (PISFV) is used to resolve the velocity field of the surface of the oil-film. Skin-friction is then calculated at location � �⃗ as (� �⃗) = � �⃗ (� �⃗, )/ (� �⃗, ), where � �⃗ ( , ) is the velocity field of the surface of the oilfilm, is the thickness of the oil-film, is time, and is the dynamic viscosity of the oil. The data collection and data analysis procedures are explained, and preliminary experimental skin-friction results for flow over the wing of NASA's Common Research Model are presented.

No abstract

No abstract

No abstract