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.
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e-mail: Maxim_Candries@yahoo.com
e-mail: Mehmet.Atlar@ncl.ac.uk
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March 2005
Technical Papers
Experimental Investigation of the Turbulent Boundary Layer of Surfaces Coated With Marine Antifoulings
M. Candries,
M. Candries
School of Marine Science and Technology,
e-mail: Maxim_Candries@yahoo.com
University of Newcastle-upon-Tyne
, Newcastle-upon-Tyne, NE1 7RU, United Kingdom Tel: + 44 191 222 89 77 Fax: + 44 191 222 54 91
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M. Atlar
M. Atlar
School of Marine Science and Technology,
e-mail: Mehmet.Atlar@ncl.ac.uk
University of Newcastle-upon-Tyne
, Newcastle-upon-Tyne, NE1 7RU, United Kingdom Tel: + 44 191 222 89 77 Fax: + 44 191 222 54 91
Search for other works by this author on:
M. Candries
School of Marine Science and Technology,
University of Newcastle-upon-Tyne
, Newcastle-upon-Tyne, NE1 7RU, United Kingdom Tel: + 44 191 222 89 77 Fax: + 44 191 222 54 91e-mail: Maxim_Candries@yahoo.com
M. Atlar
School of Marine Science and Technology,
University of Newcastle-upon-Tyne
, Newcastle-upon-Tyne, NE1 7RU, United Kingdom Tel: + 44 191 222 89 77 Fax: + 44 191 222 54 91e-mail: Mehmet.Atlar@ncl.ac.uk
J. Fluids Eng. Mar 2005, 127(2): 219-232 (14 pages)
Published Online: December 22, 2004
Article history
Received:
May 29, 2002
Revised:
December 22, 2004
Citation
Candries, M., and Atlar, M. (December 22, 2004). "Experimental Investigation of the Turbulent Boundary Layer of Surfaces Coated With Marine Antifoulings." ASME. J. Fluids Eng. March 2005; 127(2): 219–232. https://doi.org/10.1115/1.1891148
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