Wall shear stress measurements by white-light oil-film interferometry

Wall shear stress and wall streamline direction measurements were conducted on a generic delta wing model to demonstrate the potential of the white-light oil-film interferometry in three-dimensional flows. With the proposed algorithm, an automatic oil-film thickness calculation is possible and yield...

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Bibliographic Details
Published in:Experiments in fluids 2020-03, Vol.61 (3), Article 84
Main Authors: Lunte, J., Schülein, E.
Format: Article
Language:English
Subjects:
Algorithms
Angle of attack
Delta wings
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Film thickness
Fluid- and Aerodynamics
Heat and Mass Transfer
Interferometry
Research Article
Shear stress
Three dimensional flow
Three dimensional models
Wall shear stresses
White light
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Summary:Wall shear stress and wall streamline direction measurements were conducted on a generic delta wing model to demonstrate the potential of the white-light oil-film interferometry in three-dimensional flows. With the proposed algorithm, an automatic oil-film thickness calculation is possible and yields reproducible and plausible wall shear stress distributions on the leeward side of the delta wing for various angles of attack. Graphic abstract
ISSN:0723-4864
1432-1114
DOI:10.1007/s00348-020-2917-9