Naslov
CFD Analysis of Surface-Piercing Hydrofoil Ventilation Inception

Autori
Andrun, Martina ; Šarić, Božidar ; Bašić, Josip ; Blagojević, Branko

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

Izvornik
Proceedings of the 22nd Symposium on Theory and Practice of Shipbuilding / - : Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, 2016, 153-162

Skup
The 22nd Symposium on Theory and Practice of Shipbuilding

Mjesto i datum
Trogir, Hrvatska, 06.10.2016. - 08.10.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Domaća recenzija

Ključne riječi
surface-piercing ; hydrofoil ; ventilation ; CFD

Sažetak
The paper presents a possibility of occurrence of ventilation phenomenon on the centerboard surface- piercing (SP) hydrofoil of a small autonomous unmanned surface vehicle (AUSV). Ventilation is a common problem associated with the design of surface-piercing hydrofoil crafts, which results in a loss of lift leading to undesired performance and consequences. Ventilation can be intentionally induced or can occur as a natural phenomenon at any air-water interface. In this work only spontaneous inception of the ventilation in transient motion of the separated flow region was considered. The main features are analyzed with the panel method such as coefficient of lift and drag for 3D wing. The free surface capturing was done using the volume of fluid (VOF) method to capture flow separation effect. CFD simulation was carried out for different attack angles, speeds and hydrofoil design in order to determine the probability of ventilation occurrence. Conclusions and suggestions for design of the hydrofoil are presented.

Izvorni jezik
Engleski

Znanstvena područja
Brodogradnja, Tehnologija prometa i transport

POVEZANOST RADA