Fouling effect on the resistance of different ship types

OCEAN ENGINEERING

卷:216

Article

Song, Soonseok¹  Demirel, Yigit Kemal¹  Muscat-Fenech, Claire De Marco²  Tezdogan, Tahsin¹  Atlar, Mehmet¹ 

[1] Univ Strathclyde, Dept Naval Architecture Ocean & Marine Engn, 100 Montrose St, Glasgow G4 0LZ, Lanark, Scotland

[2] Univ Malta, Fac Engn, MSD-2080 Msida, Malta

关键词: Biofouling;    Ship resistance;    KRISO container Ship (KCS);    KRISO tanker (KVLCC2);    Computational fluid dynamics (CFD);   

DOI  :  10.1016/j.oceaneng.2020.107736

来源: Elsevier

【 摘 要 】

Considering that the ship hydrodynamic behaviours differ by the ship types and dimensions, the effect of biofouling on ship resistance can also vary with different ships. In this study, Unsteady Reynolds Averaged Navier-Stokes (URANS) based towed ship models were developed to simulate the roughness effect of biofouling on ship resistance. A container ship (KCS) and a tanker (KVLCC2), representing slender and a full hull forms, were modelled with various scale factors and speeds. The CFD simulations were conducted with several fouling conditions by embedding the roughness function of barnacles into the wall-function of the CFD model (i.e. modified wall-function approach). The fouling effects on the resistance components, form factors, wake fractions and the flow characteristics were investigated from the simulations. Significant differences were observed varying with the hull types, lengths (scales) and speeds of the ships and it was concluded that these differences are dominated by two parameters; relative roughness height and the roughness Reynolds number.

【 授权许可】

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