A new oil-fringe imaging skin friction (FISF) technique to measure skin friction on wind tunnel models is presented. In the method used to demonstrate the technique, lines of oil are applied on surfaces that connect the intended sets of measurement points, and then a wind tunnel is run so that the oil thins and forms interference fringes that are spaced proportional to local skin friction. After a run the fringe spacings are imaged with a CCD-array digital camera and measured on a computer. Skin friction and transition measurements on a two-dimensional wing are presented and compared with computational predictions.
Boundary-Layer Transition and Global Skin Friction Measurement with an Oil-Fringe Imaging Technique
Sae Technical Papers
Aerospace Technology Conference and Exposition ; 1993
1993-09-01
Conference paper
English
AIAA 2001-0557 Improved Fringe Imaging Skin Friction Analysis Using Automated Fringe Identification
British Library Conference Proceedings | 2001
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