Naslov
Numerical investigation of the effect of hard fouling on the ship resistance

Autori
Farkas, Andrea ; Degiuli, Nastia ; Martić, Ivana

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the International Conference on Ships and Offshore Structures (ICSOS 2019) / Sahoo, Prasanta ; Ehlers, Sören ; Paik, Jeom Kee - Melbourne (FL), 2019, 138-162

Skup
International Conference on Ships and Offshore Structures (ICSOS 2019)

Mjesto i datum
Melbourne (FL), Sjedinjene Američke Države, 04.11.2019. - 08.11.2019

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
CFD ; hard fouling ; resistance characteristics ; container ship ; crude carrier

Sažetak
Biofouling is the colonization of underwater surfaces by microorganisms, plants, algae or animals and can be divided into soft and hard fouling. Soft fouling is consisted of algae, slime and grasses and typically has a lower impact on the performance of the ship than hard fouling, which has a calcareous structure. Furthermore, hard fouling can be extremely detrimental to the performance of machinery and coating systems. Within this paper, the effect of hard fouling on the ship resistance is assessed utilizing Computational Fluid Dynamics (CFD). The roughness function model for the hard fouling is implemented within the wall function of the CFD software. Afterwards, numerical simulations of fouled flat plates are performed, and the obtained results are verified and validated with the experimental results published in the literature. Once validated, numerical simulations with implemented roughness function model and roughness length scale, proposed in the literature, can be used for the determination of the effect of hard fouling on the resistance of any arbitrary body. Lastly, the effects of hard fouling on the resistance characteristics of two merchant ships at full-scale are determined utilizing the validated CFD model. Benefits of the proposed method for the determination of the effect of hard fouling on the ship resistance are highlighted and discussed.

Izvorni jezik
Hrvatski

Znanstvena područja
Brodogradnja

POVEZANOST RADA