Drag-reducing riblets with fouling-release properties

Title

Drag-reducing riblets with fouling-release properties: development and testing

 Author

Benschop, H.O.G. (TU Delft Fluid Mechanics)
Guerin, A. J. (Newcastle University, United Kingdom)
Brinkmann, A. (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM)
Dale, M. L. (AkzoNobel/International Paint Ltd)
Finnie, A. A. (AkzoNobel/International Paint Ltd)
Breugem, W.P. (TU Delft Multi Phase Systems) ORCID 0000-0003-0788-2862
Clare, A. S. (Newcastle University, United Kingdom)
Stübing, D. (Fraunhofer Institute for Manufacturing Technology and Advanced Materials IFAM)
Price, C. (AkzoNobel/International Paint Ltd)
Reynolds, K. J. (AkzoNobel/International Paint Ltd)

Date

2018

 Abstract

The manufacture and preliminary testing of a drag-reducing riblet texture with fouling-control properties is presented. The commercial fouling-release product Intersleek® 1100SR was modified to manufacture riblet-textured coatings with an embossing technology. Hydrodynamic drag measurements in a Taylor–Couette set-up showed that the modified Intersleek® riblets reduced drag by up to 6% compared to a smooth surface. Barnacle settlement assays demonstrated that the riblets did not substantially reduce the ability of Intersleek® 1100SR to prevent fouling by cyprids of Balanus amphitrite. Diatom adhesion tests revealed significantly higher diatom attachment on the riblet surface compared to smooth Intersleek® 1100SR. However, after exposure to flow, the final cell density was similar to the smooth surface. Statically immersed panels in natural seawater showed an increase of biofilm cover due to the riblets. However, the release of semi-natural biofilms grown in a multi-species biofilm culturing reactor was largely unaffected by the presence of a riblet texture.


 Subject

antifouling
biofilm release
drag reduction
Intersleek®
marine coatings
Riblet texture

 To reference this document use:

http://resolver.tudelft.nl/uuid:6f34f14e-cd27-44de-91a6-f9d66893c4f8

 DOI

https://doi.org/10.1080/08927014.2018.1469747

 ISSN

0892-7014

 Source

Biofouling: the journal of bioadhesion and biofilm research, 34 (5), 532-544

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

© 2018 H.O.G. Benschop, A. J. Guerin, A. Brinkmann, M. L. Dale, A. A. Finnie, W.P. Breugem, A. S. Clare, D. Stübing, C. Price, K. J. Reynolds
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