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Lookup NU author(s): Professor Mehmet Atlar
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Turbulent boundary-layer measurements have been carried out on flat surfaces coated with two different new generation marine antifoulings. The coatings were applied on 1-m-long test sections that were fitted in a 2.1-m-long flat plate setup. The measurements were carried out in two different recirculating water tunnels by means of two-component laser Doppler velocimetry and were compared with measurements of a smooth steel reference surface and a surface covered with sand grit. Both coatings exhibited an increase in frictional resistance compared to the reference surface, but the increase was significantly smaller for the Foul(ing) Release coatings than for the Tin-free SPC coating. The coatings did not significantly affect the boundary-layer thickness. When expressed in inner variables, the coatings did not have an effect on the turbulence intensity profiles, but when expressed in outer variables, the coatings affected the near-wall turbulence intensities. Copyright © 2005 by ASME.
Author(s): Candries M, Atlar M
Publication type: Article
Publication status: Published
Journal: Journal of Fluids Engineering, Transactions of the ASME
Year: 2005
Volume: 127
Issue: 2
Pages: 219-232
ISSN (print): 0098-2202
ISSN (electronic): 1528-901X
Publisher: ASME International
URL: http://dx.doi.org/10.1115/1.1891148
DOI: 10.1115/1.1891148
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