Naslov
Numerical Assessment of the Interference Resistance for Multihulls

Autori
Farkas, Andrea

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, prošireni sažetak, znanstveni

Izvornik
Third Annual PhD Workshop - Book of Abstracts / Parunov, Joško ; Zovko Brodarac, Zdenka ; Bauer, Branko ; Duić, Neven ; Jokić, Andrej ; Landek, Darko ; Lisjak, Dragutin ; Lulić, Zoran ; Majetić, Dubravko ; Matijević, Božidar ; Runje, Biserka ; Sorić, Jurica ; Terze, Zdravko (ur.). - Zagreb, 2017, 9-9

Skup
Third Annual PhD Workshop

Mjesto i datum
Zagreb, Hrvatska, 30.06.2017

Vrsta sudjelovanja
Radionica

Vrsta recenzije
Domaća recenzija

Ključne riječi
Computational Fluid Dynamics (CFD) ; Volume of Fluid (VOF) ; interference resistance ; multihulls

Sažetak
Growing demands for higher energy efficiency have led to significant increase in interest for multihull configurations in civil, recreational and military fields. Even though many theoretical, numerical and experimental studies have recently been made, multihull resistance prediction still has a degree of uncertainty. Total resistance of multihull cannot be determined as the sum of the total resistance of each hull, because interference resistance should also be taken into consideration. As interference resistance is a very complex phenomenon, profound understanding of the flow in inner and outer region of multihull configurations is necessary to effectively assess its value. Advancement in the computer science and numerical computation methods has led to improvement in accuracy and efficiency of Computational Fluid Dynamics (CFD) methods. Consequently, CFD methods have become useful tool for investigation of multihull hydrodynamic characteristics. In the past, the most commonly used methods for interference resistance prediction were experimental methods and CFD methods based on the potential flow theory. Experimental methods are very expensive and time consuming, while potential flow methods neglect viscous effects and therefore cannot assess interference resistance correctly. CFD based on the viscous flow can capture turbulent and vorticity effects, as well as nonlinear free surface effects. Within this research, numerical study of interference resistance is performed for different catamaran configurations.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja

POVEZANOST RADA