A CFD model for the frictional resistance prediction of antifouling coatings

Yigit Kemal Demirel, Mahdi Khorasanchi, Osman Turan, Atilla Incecik, Michael P. Schultz

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

The fuel consumption of a ship is strongly influenced by her frictional resistance, which is directly affected by the roughness of the hull׳s surface. Increased hull roughness leads to increased frictional resistance, causing higher fuel consumption and CO2 emissions. It would therefore be very beneficial to be able to accurately predict the effects of roughness on resistance. This paper proposes a Computational Fluid Dynamics (CFD) model which enables the prediction of the effect of antifouling coatings on frictional resistance. It also outlines details of CFD simulations of resistance tests on coated plates in a towing tank. Initially, roughness functions and roughness Reynolds numbers for several antifouling coatings were evaluated using an indirect method. Following this, the most suitable roughness function model for the coatings was employed in the wall-function of the CFD software. CFD simulations of towing tests were then performed and the results were validated against the experimental data given in the literature. Finally, the effects of antifouling coatings on the frictional resistance of a tanker were predicted using the validated CFD model.
LanguageEnglish
Pages21-31
Number of pages11
JournalOcean Engineering
Volume89
Early online date31 Jul 2014
DOIs
Publication statusPublished - 1 Oct 2014

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Dynamic models
Computational fluid dynamics
Surface roughness
Coatings
Fuel consumption
Ship model tanks
Wall function
Computer simulation
Ships
Reynolds number

Keywords

  • antifouling
  • CFD
  • friction resistance
  • hull roughness

Cite this

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title = "A CFD model for the frictional resistance prediction of antifouling coatings",
abstract = "The fuel consumption of a ship is strongly influenced by her frictional resistance, which is directly affected by the roughness of the hull׳s surface. Increased hull roughness leads to increased frictional resistance, causing higher fuel consumption and CO2 emissions. It would therefore be very beneficial to be able to accurately predict the effects of roughness on resistance. This paper proposes a Computational Fluid Dynamics (CFD) model which enables the prediction of the effect of antifouling coatings on frictional resistance. It also outlines details of CFD simulations of resistance tests on coated plates in a towing tank. Initially, roughness functions and roughness Reynolds numbers for several antifouling coatings were evaluated using an indirect method. Following this, the most suitable roughness function model for the coatings was employed in the wall-function of the CFD software. CFD simulations of towing tests were then performed and the results were validated against the experimental data given in the literature. Finally, the effects of antifouling coatings on the frictional resistance of a tanker were predicted using the validated CFD model.",
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A CFD model for the frictional resistance prediction of antifouling coatings. / Demirel, Yigit Kemal; Khorasanchi, Mahdi; Turan, Osman; Incecik, Atilla; Schultz, Michael P.

In: Ocean Engineering, Vol. 89, 01.10.2014, p. 21-31.

Research output: Contribution to journalArticle

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AU - Schultz, Michael P.

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