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Journal of Flow Visualization and Image Processing
SJR: 0.161 SNIP: 0.312 CiteScore™: 0.1

ISSN Imprimir: 1065-3090
ISSN En Línea: 1940-4336

Journal of Flow Visualization and Image Processing

DOI: 10.1615/JFlowVisImageProc.v16.i1.20
pages 19-39

GLOBAL SKIN FRICTION DIAGNOSTICS IN SEPARATED FLOWS USING LUMINESCENT OIL

Tianshu Liu
Department of Mechanical and Aeronautical Engineering, G-220, Parkview Campus, Western Michigan University, Kalamazoo, MI 49008
S. Woodiga
Department of Mechanical and Aeronautical Engineering, G-220, Parkview Campus, Western Michigan University, Kalamazoo, MI 49008
J. Montefort
Department of Mechanical and Aeronautical Engineering, G-220, Parkview Campus, Western Michigan University, Kalamazoo, MI 49008
K. J. Conn
Department of Mechanical and Aeronautical Engineering, G-220, Parkview Campus, Western Michigan University, Kalamazoo, MI 49008
Lixin Shen
Department of Mathematics, Syracuse University, Syracuse, NY 13244

SINOPSIS

Quantitative skin friction diagnostics in complex separated flows is achieved by using a global luminescent oil-film skin-friction meter. This technique is based on the variational solution for the projected thin-oil-film equation on the image plane. Normalized skin friction fields are obtained in junction flows and flows over surface roughness elements, a double-delta wing, and a low-aspect-ratio rectangular wing. The results show the detailed topological structures of skin friction fields in these flows.